MTD 769-04101 Manuel utilisateur

Marque: MTD

Modèle: 769-04101

Catégorie: Souffleuses à neige

Taper: Manuel utilisateur

Ce manuel convient également à

OEM-390-679

Safety • Assembly • Operation • Adjustments • Maintenance • Troubleshooting • Parts Lists • Warranty

LES DISTRIBUTIONS RVI LIMITÉE, 2955, JEAN-BAPTISTE DESCHAMPS, LACHINE, QUEBEC H8T 1C5

PRINTED IN U.S.A.

IMPORTANT:

READ SAFETY RULES AND

INSTRUCTIONS CAREFULLY

BEFORE OPERATION

OPERATOR’S MANUAL

05/28/08

769-04101

28”, 30”, 33” & 45” Two-Stage Snow Throwers

Finding and Recording Model Number

Table of Contents

BEFORE YOU START ASSEMBLING

YOUR NEW EQUIPMENT,

please locate the model plate on the equipment and copy the

the model number and the serial number to the sample model

plate provided to the right. You can locate the model plate by

standing at the operating position and looking down at the

frame.

This Operator’s Manual is an important part of your new snow thrower. It will help you assemble,

prepare and maintain the unit for best performance. Please read and understand what it says.

Customer Support

1. If you have difficulty assembling this product or have any questions regarding the controls, operation or maintenance of this

unit, please call an authorized dealer.

Please have your unit’s model number and serial number ready when you call. See previous section to locate this

information.

2. The engine manufacturer is responsible for all engine-related issues with regards to performance, power-rating, specifica-

tions, warranty and service. Please refer to the engine manufacturer’s Owner’s/Operator’s Manual, packed separately with

your unit, for more information.

#/,5-")!#!.!$!

+)4#(%.%2/..'*

8888888888

88888888888

-ODEL.UMBER

.UM£RODEMODÞLE

3ERIAL.UMBER

.UM£RODES£RIE

Safety Symbols ................................................... 3

Safe Operation Practices ................................... 4

Setting Up Your Snow Thrower .......................... 6

Operating Your Snow Thrower ......................... 10

MakingAdjustments ......................................... 14

Maintaining Your Snow Thrower ...................... 16

Off-Season Storage .......................................... 20

Trouble Shooting .............................................. 21

Warranty ............................................................ 22

Illustrated Parts Lists ....................................... 24

Symbol Description

READ THE OPERATOR’S MANUAL(S)

Read, understand, and follow all instructions in the manual(s) before

attempting to assemble and operate

WARNING— ROTATING BLADES

Keep hands out of inlet and discharge openings while machine is running.

There are rotating blades inside

WARNING— ROTATING BLADES

Keep hands out of inlet and discharge openings while machine is running.

There are rotating blades inside

WARNING— ROTATING AUGER

Do not put hands or feet near rotating parts, in the auger/impeller housing

or chute assembly. Contact with the rotating parts can amputate hands and

feet.

WARNING—THROWN OBJECTS

This machine may pick up and throw and objects which can cause serious

personal injury.

WARNING—GASOLINE IS FLAMMABLE

Allow the engine to cool at least two minutes before refueling.

WARNING— CARBON MONOXIDE

Never run an engine indoors or in a poorly ventilated area. Engine exhaust

contains carbon monoxide, an odorless and deadly gas.

WARNING— ELECTRICAL SHOCK

Do not use the engine’s electric starter in the rain

Safety

Symbols

This page depicts and describes safety symbols that may appear on this product. Read, understand, and follow all

instructions on the machine before attempting to assemble and operate.

WARNING

This symbol points

out important safety

instructions which,

if not followed, could

endanger the per-

sonal safety and/or

property of yourself

and others. Read and

follow all instructions

in this manual before

attempting to operate

this machine. Failure

to comply with these

instructions may

result in personal

injury. When you see

this symbol, HEED

ITS WARNING!

Your Responsibility

Restrict the use

of this power machine

to persons who read,

understand

and follow the warnings

and instructions

in this manual

and on the machine.

Safe

Operation

Practices

Training

1. Read, understand, and follow all instructions on the

machine and in the manual(s) before attempting to

assemble and operate. Keep this manual in a safe place for

future and regular reference and for ordering replacement

parts.

2. Be familiar with all controls and their proper operation.

Know how to stop the machine and disengage them quickly.

3. Never allow children under 14 years old to operate this

machine. Children 14 years old and over should read and

understand the instructions and safe operation practices

in this manual and on the machine and be trained and

supervised by an adult.

4. Never allow adults to operate this machine without proper

instruction.

5. Thrown objects can cause serious personal injury. Plan

your snow-throwing pattern to avoid discharge of material

toward roads, bystanders and the like.

6. Keep bystanders, helpers, pets and children at least 75 feet

from the machine while it is in operation. Stop machine if

anyone enters the area.

7. Exercise caution to avoid slipping or falling, especially

when operating in reverse.

Preparation

Thoroughly inspect the area where the equipment is to be

used. Remove all doormats, newspapers, sleds, boards, wires

and other foreign objects, which could be tripped over or

thrown by the auger/impeller.

1. Always wear safety glasses or eye shields during

operation and while performing an adjustment or repair

to protect your eyes. Thrown objects which ricochet can

cause serious injury to the eyes.

2. Do not operate without wearing adequate winter outer gar-

ments. Do not wear jewelry, long scarves or other loose

clothing, which could become entangled in moving parts.

Wear footwear which will improve footing on slippery

surfaces.

3. Use a grounded three-wire extension cord and receptacle

for all units with electric start engines.

4. Adjust collector housing height to clear gravel or crushed

rock surfaces.

5. Disengage all control levers before starting the engine.

6. Never attempt to make any adjustments while engine is

running, except where specifically recommended in the

operator’s manual.

7. Let engine and machine adjust to outdoor temperature

before starting to clear snow.

Safe Handling of Gasoline

To avoid personal injury or property damage use extreme care

in handling gasoline. Gasoline is extremely flammable and the

vapors are explosive. Serious personal injury can occur when

gasoline is spilled on yourself or your clothes, which can ignite.

Wash your skin and change clothes immediately.

a. Use only an approved gasoline container.

b. Extinguish all cigarettes, cigars, pipes and other sources

of ignition.

c. Never fuel machine indoors.

d. Never remove gas cap or add fuel while the engine is hot

or running.

e. Allow engine to cool at least two minutes before refuel-

ing.

f. Never over fill fuel tank. Fill tank to no more than ½ inch

below bottom of filler neck to provide space for fuel

expansion.

g. Replace gasoline cap and tighten securely.

h. If gasoline is spilled, wipe it off the engine and equip-

ment. Move machine to another area. Wait 5 minutes

before starting the engine.

i. Never store the machine or fuel container inside where

there is an open flame, spark or pilot light (e.g. furnace,

water heater, space heater, clothes dryer etc.).

j. Allow machine to cool at least 5 minutes before storing

k. Never fill containers inside a vehicle or on a truck or

trailer bed with a plastic liner. Always place containers on

the ground away from your vehicle before filling.

l. If possible, remove gas-powered equipment from the

truck or trailer and refuel it on the ground. If this is not

possible, then refuel such equipment on a trailer with a

portable container, rather than from a gasoline dispenser

nozzle.

m. Keep the nozzle in contact with the rim of the fuel tank or

container opening at all times until fueling is complete.

Do not use a nozzle lock-open device.

WARNING: Engine Exhaust, some of its constituents, and certain vehicle compo-

nents contain or emit chemicals known to State of California to cause cancer and

birth defects or other reproductive harm.

WARNING

This symbol points

out important safety

instructions which,

if not followed, could

endanger the per-

sonal safety and/or

property of yourself

and others. Read and

follow all instructions

in this manual before

attempting to operate

this machine. Failure

to comply with these

instructions may

result in personal

injury. When you see

this symbol,

HEED

ITS WARNING!

Your Responsibility

Restrict the use

of this power machine

to persons who read,

understand

and follow the warnings

and instructions

in this manual

and on the machine.

DANGER: This machine was built to be operated according to the safe operation practices in this

manual. As with any type of power equipment, carelessness or error on the part of the operator can

result in serious injury. This machine is capable of amputating hands and feet and throwing objects.

Failure to observe the following safety instructions could result in serious injury or death.

Operation

1. Do not put hands or feet near rotating parts, in the auger/

impeller housing or chute assembly. Contact with the

rotating parts can amputate hands and feet.

2. The auger/impeller control lever is a safety device. Never

bypass its operation. Doing so makes the machine unsafe

and may cause personal injury.

3. The control levers must operate easily in both directions

and automatically return to the disengaged position when

released.

4. Never operate with a missing or damaged chute assembly.

Keep all safety devices in place and working.

5. Never run an engine indoors or in a poorly ventilated area.

Engine exhaust contains carbon monoxide, an odorless and

deadly gas.

6. Do not operate machine while under the influence of alcohol

or drugs.

7. Muffler and engine become hot and can cause a burn. Do

not touch.

8. Exercise extreme caution when operating on or crossing

gravel surfaces. Stay alert for hidden hazards or traffic.

9. Exercise caution when changing direction and while operat-

ing on slopes.

10. Plan your snow-throwing pattern to avoid discharge towards

windows, walls, cars etc. Thus, avoiding possible property

damage or personal injury caused by a ricochet.

11. Never direct discharge at children, bystanders and pets or

allow anyone in front of the machine.

12. Do not overload machine capacity by attempting to clear

snow at too fast of a rate.

13. Never operate this machine without good visibility or light.

Always be sure of your footing and keep a firm hold on the

handles. Walk, never run.

14. Disengage power to the auger/impeller when transporting or

not in use.

15. Never operate machine at high transport speeds on slippery

surfaces. Look down and behind and use care when

backing up.

16. If the machine should start to vibrate abnormally, stop the

engine, disconnect the spark plug wire and ground it against

the engine. Inspect thoroughly for damage. Repair any

damage before starting and operating.

17. Disengage all control levers and stop engine before you

leave the operating position (behind the handles). Wait

until the auger/impeller comes to a complete stop before

unclogging the chute assembly, making any adjustments, or

inspections.

18. Never put your hand in the discharge or collector openings.

Always use the clean-out tool provided to unclog the dis-

charge opening. Do not unclog chute assembly while engine

is running. Shut off engine and remain behind handles until

all moving parts have stopped before unclogging.

19. Use only attachments and accessories approved by the

manufacturer (e.g. wheel weights, tire chains, cabs etc.).

20. When starting engine, pull cord slowly until resistance is felt,

then pull rapidly. Rapid retraction of starter cord (kickback)

will pull hand and arm toward engine faster than you can let

go. Broken bones, fractures, bruises or sprains could result.

21. If situations occur which are not covered in this manual, use

care and good judgment. Call customer assistance for the

name of your nearest servicing dealer.

Maintenance & Storage

1. Never tamper with safety devices. Check their proper

operation regularly. Refer to the maintenance and adjust-

ment sections of this manual.

2. Before cleaning, repairing, or inspecting machine disengage

all control levers and stop the engine. Wait until the auger/

impeller come to a complete stop. Disconnect the spark plug

wire and ground against the engine to prevent unintended

starting.

3. Check bolts and screws for proper tightness at frequent

intervals to keep the machine in safe working condition.

Also, visually inspect machine for any damage.

4. Do not change the engine governor setting or over-speed

the engine. The governor controls the maximum safe

operating speed of the engine.

5. Snow thrower shave plates and skid shoes are subject to

wear and damage. For your safety protection, frequently

check all components and replace with original equipment

manufacturer’s (OEM) parts only. “Use of parts which do

not meet the original equipment specifications may lead to

improper performance and compromise safety!”

6. Check controls periodically to verify they engage and

disengage properly and adjust, if necessary. Refer to the

adjustment section in this operator’s manual for instructions.

7. Maintain or replace safety and instruction labels, as neces-

sary.

8. Observe proper disposal laws and regulations for gas, oil,

etc. to protect the environment.

9. Prior to storing, run machine a few minutes to clear snow

from machine and prevent freeze up of auger/impeller.

10. Never store the machine or fuel container inside where

there is an open flame, spark or pilot light such as a water

heater, furnace, clothes dryer etc.

11. Always refer to the operator’s manual for proper instructions

on off-season storage.

12. Check fuel line, tank, cap, and fittings frequently for cracks

or leaks. Replace if necessary.

13. Do not crank engine with spark plug removed.

Do not modify engine

To avoid serious injury or death, do not modify engine in any

way. Tampering with the governor setting can lead to a runaway

engine and cause it to operate at unsafe speeds. Never tamper

with factory setting of engine governor.

Notice regarding Emissions

Engines which are certiﬁed to comply with California and federal

EPA emission regulations for SORE (Small Off Road Equipment)

are certiﬁed to operate on regular unleaded gasoline, and may

include the following emission control systems: Engine Modiﬁca-

tion (EM) Oxidizing Catalyst (OC), Secondary Air Injection (SAI)

and Three Way Catalyst (TWC) if so equipped.

Average Useful Life

According to the Consumer Products Safety Commission

(CPSC) and the U.S. Environmental Protection Agency (EPA),

this product has an Average Useful Life of seven (7) years, or

60 hours of operation. At the end of the Average Useful Life,

have the machine inspected annually by an authorized service

dealer to ensure that all mechanical and safety systems are

working properly and not worn excessively. Failure to do so can

result in accidents, injuries or death.

Safe

Operation

Practices

WARNING

This symbol points

out important safety

instructions, which

if not followed, could

endanger the per-

sonal safety and/or

property of yourself

and others. Read and

follow all instructions

in this manual before

attempting to operate

this machine. Failure

to comply with these

instructions may

result in personal

injury. When you see

this symbol, HEED

IT’S WARNING!

Your Responsibility

Restrict the use

of this power machine

to persons who read,

understand

and follow the warnings

and instructions

in this manual

and on the machine.

05.08.08

Setting Up

Your Snow

Thrower

IMPORTANT: The snow thrower is shipped with oil and

WITHOUT GASOLINE. After assembly, refer to separate

engine manual for proper fuel and engine oil recom-

mendations.

Loose Parts

• Theaugersaresecuredtotheaugershaftwithshear

pins and bow tie cotter pins. If you hit a foreign object

or ice jam, the snow thrower is designed so that the

pins may shear. Replacement shear pins and cotter

pins are provided for your convenience. Store these

safely until needed.

Items Required For Assembly

Pair of pliers 7/16” Wrenches or adjustables

Fresh gasoline

Assembling Handle

• Look at the lower rear of the snow thrower frame to

be sure the spring (found at the end of each cable) is

attached to its actuator bracket.

• Removethelowerhandleknobs,washersand

carriage bolts from each side of the upper handle.

See Figure 3-2.

• Raise the upper handle assembly until it locks over

the lower handle. See Figure 3-1.

• Secure the upper handle and lower handle with the

handle knobs and carriage bolts previously removed.

• Tighten the handle knobs already in place on the

upper holes and secure the handles firmly.

Attaching Chute Crank

• Removethehairpinclipfromtheupperchutecrank

and slide the upper chute crank into the lower chute

crank. A pair of pliers may help in this job. See Figure

3-3.

a. Align the two holes on both chute cranks. See

Figure 3-3.

b. Secure with the hairpin clip removed earlier.

Figure 3-1

NOTE: This Operator’s

Manual covers several

models. Snowthrower

featrues vary by model.

Not all features refer-

enced in this manual

are applicable to all

snowthrower models.

NOTE: References to

right or left side of the

snow thrower are deter-

mined from behind the

unit in the operating

position.

NOTE: Replacement

auger shear pins and

cotter pins are provided

for your convenience.

Store these safely until

needed.

Figure 3-2

Figure 3-3

Prior to operating

your snow thrower,

refer to Auger Control

on page 9. Read and

follow all instructions

carefully and perform

all adjustments to

verify your unit is

operating safely and

properly.

Setting Up

Your Snow

Thrower

WARNING

Attaching the Chute Assembly

• Removelocknutsandscrewssecuringoneofthe

flange keepers to the chute assembly. See Figure 3-4.

• Loosenbutdonotremovethelocknutsandscrewson

the other two flange keepers.

• Slide chute assembly over chute opening, making

sure the flange keepers are beneath lip of chute

adapter. The notches should engage with the spiral

end of the chute crank. See Figure 3-5.

• Secureflangekeeper,locknutsandscrewspreviously

removed. Tighten all flange keepers and hardware

with two 7/16” wrenches. Do not over tighten.

NOTE: If necessary the chute crank support bracket can

be adjusted so the spiral on the chute crank fully engages

the teeth on the chute assembly. Refer to the Adjustment

Section.

Attaching the Shift Rod

• Aligntheupperandlowershiftrods,then slide the

shift rod connector down over the end of the lower

shift rod. Tap the connector until the lower rod is

completely through the connector. See Figure 3-6.

NOTE: If the connector is not properly assembled, the

shift rod will pivot and you will not be able to change

speeds or direction.

NOTE: If the full range of speeds (forward and reverse)

cannot be achieved, refer to the Adjustment Section.

• Normally the cable ties holding the steering cables

against the handle are loosely installed on each side

of the lower handle at the factory. Pull the cable ties

tight to secure. Cut the excess from the ends of cable

ties.

• Ifnotalreadyattached,slipthecablesthatrunfrom

the handle panel to the discharge chute into the cable

guide. See Figure 3-7.

Figure 3-4

Figure 3-5

Figure 3-6

Figure 3-7

Setting Up

Your Snow

Thrower

Drift Cutters (If Equipped)

Drift cutters should be used when operating the snow

thrower in heavy drift conditions.

• Onmodelssoequipped,driftcuttersandhardware

are assembled to the auger housing inverted.

• Removethecarriageboltsandwingnutssecuringthe

drift cutters to the housing.

• Repositiondriftcutterssotheyfaceforwardas

shown in Figure 3-9. Secure with hardware previously

removed, wingnuts should be fastened on the outside

of the housing as shown.

If your unit is not equipped with drift cutters, you may

contact Customer Support as instructed on page 2 for

information regarding price and availability.

Snowthrower Model Drift Cutter Kit:

All models OEM-390-679

Clean-Out Tool

The clean-out tool is mounted to the rear of the auger

housing and is designed to clear a clogged chute. See

Figure 3-10. Refer to the Operation section for more

detailed information regarding the chute clean-out tool.

NOTE: This item is fastened with a cable tie to the rear of

the auger housing at the factory. Cut the cable tie before

operating the snow thrower.

WARNING: Never use your hands to

clean snow and ice from the chute

assembly or auger housing.

Final Adjustments

Make these final adjustments before operating your snow

thrower for the first time. Failure to follow these instruc-

tions may cause damage to the snow thrower.

Wheel Drive Control & Shift Lever

Perform the following test to determine need for adjust-

ment:

• Movetheshiftleverintosixth(6)position.SeeFigure

3-14.

• Withthedrivecontrolreleased(seeFigure3-11A),

push the snow thrower forward, then pull it back. The

machine should move freely.

• Engagethedrivecontrolandattempttomovethe

machine both forward and back, resistance should be

felt.

• Movetheshiftleverintothefastreverse(R2)position

and repeat the previous two steps.

If you experienced resistance rolling the unit, either

when repositioning the shift lever from 6 to R2 or when

attempting to move the machine with the drive control

released, adjust the drive control immediately. To adjust,

proceed as follows:

WARNING

Never use your hands

to clean snow and

ice from the chute

assembly or auger

housing.

IMPORTANT

Under any circum-

stance do not exceed

manufacturer’s recom-

mended psi. Equal tire

pressure should be

maintained at all times.

Excessive pressure

when seating beads

may cause tire/rim

assembly to burst

with force sufficient to

cause serious injury.

Refer to sidewall of

tire for recommended

pressure.

Figure 3-10

Clean-Out

Tool

Figure 3-9

Alternator Lead

Lamp Wire

Alternator

Lead

NOTE:

Wheels are omitted from illustration for clarity.

Figure 3-8

Lamp Wiring

• Wrapthewirefromtheheadlampdowntheright

handle until the wire can be plugged into the alterna-

tor lead wire under the fuel tank. See Figure 3-8.

Setting Up

Your Snow

Thrower

WARNING

Never use your hands

to clean snow and

ice from the chute

assembly or auger

housing.

IMPORTANT

If the tire pressure is not

equal in both tires, the unit

may not travel in a straight

path and the shave plate

may wear unevenly.

Figure 3-11

• Repeataugercontroltesttoverifyforproper

adjustment. Repeat previous steps to adjust more, if

necessary.

Skid Shoes

Position the skid shoes based on surface conditions.

Adjust upward for hard-packed snow. Adjust downward

when operating on gravel or crushed rock surfaces. See

“Making Adjustment” Section.

Tire Pressure (Pneumatic Tires)

The tires are over-inflated for shipping purposes.

Check the tire pressure before operating the snow

thrower. Refer to the tire side wall for tire manufacturer’s

recommended psi and deflate (or inflate) the tires as

necessary.

• LoosentheNylocknutonthedrivecontrolcableand

unthread the cable one full turn. See Figure 3-13.

• Recheckadjustment.

• RetightentheNylocknuttosecurethecablewhen

correct adjustment is reached.

NOTE: For more details, refer to Drive Control Adjust-

ment in the Adjustment Section of this manual.

Auger Control

Check the adjustment of the auger control as follows:

• Whentheaugercontrolisreleasedandinthe

disengaged “up” position (see Figure 3-11B), the cable

should have very little slack, but should NOT be tight.

See Figure 3-12.

WARNING:Do not over-tighten the

cable. Over-tightening may prevent the

auger from disengaging and compro-

mise the safety of the snow thrower.

• Inawell-ventilatedarea,startthesnowthrowerengine

as instructed on page 12.

• Whilestandingintheoperator’sposition(behindthe

snow thrower) engage the auger.

• Allowtheaugertoremainengagedforapproximately

ten seconds before releasing the auger control.

Repeat this several times.

• Withtheaugercontrolleverinthedisengaged“up”

position, walk to the front of the machine.

• Confirmthattheaugerhascompletelystopped

rotating and shows no signs of motion.

IMPORTANT: If the auger shows any signs of rotating,

immediately return to the operator’s position and shut

off the engine. Wait for all moving parts to stop before

readjusting the auger control cable.

• Toreadjustthecontrolcable,unhookthespring(found

on the end of the auger cable) from the auger actuator

bracket. See Figure 3-12.

• Pushthecablecouplerthroughtheendofthespring

to expose the lock nut. See Figure 3-13.

• ThreadtheNylocknutoutward(downthecoupler)

three full turns to provide more slack in the cable and

reattach the spring to the bracket.

Figure 3-13

Figure 3-12

Drive

Auger

A - For models with steel panels.

B - For models with plastic panels.

Shift Lever

Two-Way Chute Control

Heated Handle Switch

(en option)†

Auger Control

Wheel Steering Control

Chute Directional Control

Headlights

Chute Assembly

Clean-Out Tool

Drive Control

Engine Controls

Recoil Starter

Handle

Choke

Control

Electric Starter

Outlet

(optional)

Electric Start

Button

(optional)

Primer

Safety

Key

Rocker

Switch

Oil Fill

Gas Cap

† If Equipped

Skid Shoe

Now that you have set up your snow thrower for opera-

tion, get acquainted with its controls and features. These

are described below and illustrated on this page. This

knowledge will allow you to use your new equipment to

its fullest potential.

NOTE: For detailed starting instructions and more

information on all engine controls, refer to the separate

engine manual packed with your unit.

Know Your Snow Thrower

Choke Control

The choke control is found on the top of the

engine and is activated by rotating the knob

counter clockwise. Activating the choke

control closes the choke plate on the carbure-

tor and aids in starting the engine.

Primer

Depressing the primer forces fuel directly into the engine’s

carburetor to aid in cold-weather starting.

Oil Fill

Engine oil level can be checked and oil added through the

oil fill.

Safety Key

The safety key must be pushed in place in order for the

engine to start. Pull the safety key out to prevent unauthor-

ized use of equipment.

Rocker Switch

The rocker switch is used to stop the engine. The switch

must be in the “ON” position in order to start the engine.

Figure 4-1

Operating

Your Snow

Thrower

WARNING

Read, understand,

and follow all instruc-

tions and warnings

on the machine and

in this manual before

operating.

Use extreme care

when handling

gasoline. Gasoline is

extremely flammable

and the vapors are

explosive. Never fuel

the machine indoors

or while the engine

is hot or running.

Extinguish cigarettes,

cigars, pipes and

other sources of

ignition.

Shift Lever

The shift lever is located in the center of

the handle panel and is used to determine

ground speed and direction of travel. It can

be moved into any of eight positions.

IMPORTANT: Always release drive control

before changing speeds.

Forward: The snow thrower has six

forward (F) speeds. Position one (1) is the

slowest and position six (6) is the fastest.

Reverse: The snow thrower has two

reverse (R) speeds—R1 is the slower of

the two.

Operating

Your Snow

Thrower

WARNING

The operation of

any snow thrower

can result in foreign

objects being thrown

into the eyes, which

can damage your

eyes severely. Always

wear safety glasses

while operating the

snow thrower, or while

performing any adjust-

ments or repairs on it.

Be sure no one other

than the operator is

standing near the snow

thrower while starting

engine or operating

snow thrower. Never

run engine indoors or

in enclosed, poorly

ventilated areas. En-

gine exhaust contains

carbon monoxide, an

odorless and deadly

gas. Keep hands, feet,

hair and loose clothing

away from any moving

parts on engine and

snow thrower.

Auger Control

The auger control is located on the left handle. Squeeze

the auger control to engage the augers. Release to stop

the snow throwing action. The drive control must also be

released in order to stop auger.

Drive Control / Auger Control Lock

The drive control is located on the right handle. Squeeze

the drive control to engage the wheel drive. Release to

stop.

This same lever also locks the auger control so you

can operate the chute crank without interrupting the

snow throwing process. If the auger control is engaged

simultaneously with the drive control, the operator can

release the auger control (on the left handle) and the

augers will remain engaged. Release the drive control to

stop the augers and wheel drive (the auger control must

also be released).

IMPORTANT: NEVER reposition the shift lever (change

speeds or direction of travel) without first releasing the

drive control and bringing the snow thrower to a complete

stop. Doing so will result in premature wear to the snow

thrower’s drive system.

Heated Handles Switch (If Equipped)

This switch is located on the right side of the snow

thrower dash panel. To activate the heated handles,

toggle the switch to the “ON” position to generate heat

within the handle grips. Toggle the switch to the “OFF”

position after using the snow thrower.

NOTE: The heated handles grips are a compliment to,

not a substitute for, proper cold weather outerwear for

the operator’s hands. It is recommended that the snow

thrower operator wear gloves/mittens to avoid extremities

of winter while operating this equipment.

!5'%2

#/.42/,

$2)6%

#/.42/,

Two-Way Chute Control™)

This two-way control lever is meant to

control the distance of snow discharge from

the chute. Tilt the lever forward or rearward

to adjust the distance snow will be thrown.

Chute Directional Control

The chute directional control is

located on left side of the snow

thrower.

To change the direction in which

snow is thrown, turn chute direc-

tional control as follows:

• Crankclockwisetodischargeto

the left.

• Crankcounterclockwisetodischargetotheright.

Wheel Steering Controls

The left and right wheel steering

controls are located on the underside

of the handles. Squeeze the right

control to turn right; squeeze the left

control to turn left.

NOTE: Operate the snow thrower in open areas until you

are familiar with these controls.

Chute Clean-Out Tool

WARNING: Never use your hands to

clear a clogged chute assembly. Shut

off engine and remain behind handles

until all moving parts have stopped

before unclogging.

The clean-out tool is conveniently fastened to the rear of

the auger housing with a mounting clip.

1. Release both the auger control and the drive/auger

control lock.

2. Stop the engine by pushing the rocker switch to the

“OFF” position, pull out the safety key.

3. Remove the clean-out tool from the mounting clip.

4. Use the shovel-shaped end of the clean-out tool to

remove any snow and ice in the chute assembly.

5. Re-fasten the clean-out tool to the mounting clip on

the rear of the auger housing and restart engine.

6. While standing in the operator’s position (behind the

snow thrower), engage the auger control for a few

seconds to clear any remaining snow or ice from the

chute assembly before continuing to clear snow.

Skid Shoes

Position the skid shoes based on surface conditions.

Adjust upward for hard-packed snow. Adjust downward

when operating on gravel or crushed rock surfaces. See

“Making Adjustment” Section.

Headlight

The headlight is on whenever the engine is running.

C L O C K W IS E T O

DISCHARGE LEFT

COUNTER CLOCKWISE

TO DISCHARGE RIGH

WARNING

Read, understand,

and follow all instruc-

tions and warnings

on the machine and

in this manual before

operating.

Use extreme care

when handling

gasoline. Gasoline is

extremely flammable

and the vapors are

explosive. Never fuel

the machine indoors

or while the engine

is hot or running.

Extinguish cigarettes,

cigars, pipes and

other sources of

ignition.

Gas & Oil Fill-Up

Service the engine with gasoline and oil as instructed in

the separate engine manual packed with your unit. Read

instructions carefully.

Starting The Engine

1. Make certain both the auger control and drive control

are in the disengaged (released) position.

2. Open fuel shut-off valve (If equipped) and make sure

the Rocker switch is in the On position (if equipped).

3. Push in the safety key.

4. Rotate choke control to FULL choke position

(for a cold engine start).

NOTE: If the engine is already warm, place choke

control in the OFF position instead of FULL.

5. Push the primer two times if temperature is above

F (-9

C), four times if temperature is below 15

(-9

C) for cold engine start, making sure to cover

vent hole in the center of the primer when pushing.

NOTE: DO NOT use primer to restart a warm engine

after a short shutdown.

Electric Starter (If Equipped)

1. Determine that your home’s wiring is a three-wire

grounded system. Ask a licensed electrician if you

are not certain.

WARNING: The optional electric

starter is equipped with a grounded

three-wire power cord and plug, and

is designed to operate on 120 volt AC

household current. It must be used

with a properly grounded three-prong

receptacle at all times to avoid the

possibility of electric shock. Follow all

instructions carefully prior to operat-

ing the electric starter.

If you have a grounded three-prong receptacle, proceed

as follows:

1. Plug the extension cord into the outlet located on the

engine’s surface. Plug the other end of extension

cord into a three-prong 120-volt, grounded, AC outlet

in a well-ventilated area.

2. Push starter button to start engine.

3. Once the engine starts, immediately release starter

button.

4. As the engine warms, slowly rotate the choke control

to the OFF position

. If the engine falters,

quickly rotate the choke control back to FULL and

then slowly into the OFF position again.

5. When disconnecting the extension cord, always

unplug the end at the three-prong wall outlet before

unplugging the opposite end from the snow thrower.

Recoil Starter

1. Grasp the recoil starter handle and slowly pull the rope

out. At the point where it becomes slightly harder to pull

the rope, slowly allow the rope to recoil.

2. Pull the starter handle with a firm, rapid stroke. Do not

release the handle and allow it to snap back. Keep a firm

hold on the starter handle and allow it to slowly recoil.

3. As the engine warms, slowly rotate the choke control to

the OFF position. If the engine falters, quickly rotate the

choke control back to the FULL position and then slowly

into the OFF position again.

NOTE: Allow the engine to warm up for a few minutes

after starting. The engine will not develop full power until it

reaches operating temperatures.

Stopping The Engine

Run engine for a few minutes before stopping to help dry off

any moisture on the engine.

• Pushtherockerswitchtothe“OFF”position.

• Pulloutthesafetykey.

• Closefuelshut-offvalve(Ifequipped).

• Wipeallsnowandmoisturefromtheareaaroundthe

engine as well as the area in and around the drive

control and auger control. Also, engage and release

both controls several times.

To Engage Drive

1. With the engine running near top speed, move

shift lever to one of six FORWARD positions or two

REVERSE positions. Select a speed appropriate for

the snow conditions that exist.

2. Squeeze drive control against the right handle and

the snow thrower will move. Release it and the drive

motion will stop.

To Engage Augers

1. To engage augers and start snow throwing, squeeze

the left hand auger control against the left handle.

Release to stop augers.

2. While the auger control is engaged, squeeze the drive

control to move, release to stop. Do not shift speeds

while the drive is engaged.

NOTE: The drive control lever also locks auger control

so you can turn the chute control without interrupting the

snow throwing process.

3. Release the auger control; the interlock mechanism

should keep the auger control engaged until the drive

control is released.

4. Release the drive control to stop both the augers and

the wheel drive. To stop the auger, both levers must be

released.

Operating

Your Snow

Thrower

WARNING

Operating

Your Snow

Thrower

NOTE: Use slower

speeds in higher

snow and/or until you

are familiar with the

snow thrower opera-

IMPORTANT

NEVER move the

shift lever without first

releasing the wheel

drive control. Doing so

will cause premature

wear on the drive

system’s friction wheel.

The muffler, engine

and surrounding

areas become hot

and can cause a burn

150°F (65°C). Do not

touch.

Operating Tips

NOTE: Allow the engine to warm up for a few minutes.

The engine will not develop full power until it reaches

operating temperature.

WARNING: The temperature of the

muffler and the surrounding areas may

exceed 150° F (65° C). Avoid these

areas.

1. If possible, remove snow immediately after it falls.

2. Discharge snow downwind whenever possible.

3. Slightly overlap each previous path.

4. Set the skid shoes 1/4” below the shave plate for

normal usage. Adjust them upward for hard-packed

snow and downward when using on gravel or crushed

rock.

General Recommendations

1. Always observe safety rules when performing

any maintenance.

2. The warranty on this snow thrower does not cover

items that have been subjected to operator abuse

or negligence. To receive full value from warranty,

operator must maintain the snow thrower as

instructed here.

3. Some adjustments will have to be made periodically

to maintain your unit properly.

4. Periodically check all fasteners and make sure these

are tight.

Making

Adjustments

WARNING

Read, understand,

and follow all instruc-

tions and warnings

on the machine and

in this manual before

operating.

Never attempt to

make any adjust-

ments while the

engine is running,

except where speci-

fied in operator’s

manual.

Run the engine

completely dry of

gasoline before

tipping snowthrower.

Shift Rod

If the full range of speeds (forward and reverse) cannot

be achieved, refer to Figure 5-1 and adjust the shift rod

as follows:

1. Looking underneath the handle panel, note which

of the three holes in the shift lever the ferrule is

inserted into. Also note the direction of insertion.

Then remove the internal cotter pin and flat washer

from the ferrule and withdraw the ferrule from the

shift lever. See Figure 5-1.

2. Place shift lever in sixth (6) position or fastest

forward speed.

3. Push shift rod and shift arm assembly down sharply,

as far as it will go to put the drive into the fastest

forward position.

4. As necessary, rotate the ferrule up or down the shift

rod until the ferrule lines up with the hole from which

it was earlier removed. See Figure 5-1.

5. From the direction noted earlier, insert the ferrule

into the proper hole.

6. Reinstall the washer and the internal cotter pin.

Drive Control

WARNING: Run the engine com-

pletely dry of gasoline before tipping

snowthrower.

Refer to the Final Adjustment section of the Set-Up

instructions to adjust the drive control. To further check

the adjustment, proceed as follows:

1. Tip the snow thrower forward, allowing it to rest on

the auger housing.

2. Remove the frame cover underneath the snow

thrower by removing the self-tapping screws. See

Figure 5-2.

3. With the wheel drive control released, check if there

is clearance between friction wheel and drive plate in

all positions of the shift lever. See Figure 5-3.

4. With the drive control lever engaged, check if the

friction wheel solidly contacts the drive plate. See

Figure 5-3. If not, adjust as follows:

a. Loosen the jam nut on the drive cable and thread

the cable in or out as necessary.

b. Retighten the jam nut to secure the cable when

correct adjustment is reached.

5. Reassemble the frame cover.

Figure 5-1

Figure 5-2

Figure 5-3

Axle Supp.

Brkt.

Opening

Drive

Plate

Friction

Wheel

IMPORTANT: It is not

recommended that

you operate this snow

thrower on gravel as

loose gravel can be

easily picked up and

thrown by the auger

causing personal

injury or damage to

the snow thrower.

If for some reason,

you have to operate

the snow thrower on

gravel, keep the skid

shoe in the highest

position for maximum

clearance between the

ground and the shave

plate.

Making

Adjustments

Figure 5-4

Skid Shoes

The space between the shave plate and the ground can

be adjusted by raising or lowering the skid shoes.

For close snow removal, as when using on a smooth

concrete or asphalt driveway, place the skid shoes in the

low position. Use the middle or high position when the

area to be cleared is uneven. When operating on gravel,

always put skid shoes in the high position.

See Figure 5-4.

Adjust skid shoes as follows:

1. Loosen, but do not remove, the hex flange locknuts

which fasten the skid shoe to the auger housing.

2. Raise or lower the skid shoe to desired position.

3. Retighten the hex nuts loosened earlier.

NOTE: Make certain the bottom surface of skid shoe is

flat against the ground to avoid uneven wear.

4. Repeat on the other side of the snow thrower.

Auger Control

Refer to instructions on page 9 to adjust the auger

control. Make certain to check for correct adjustment as

instructed before operating the snow thrower.

Chute Assembly

The distance snow is thrown can be adjusted by adjusting

the angle of the chute assembly. Refer to page 9 for

instructions.

The remote chute control cables have been pre-adjusted

at the factory. Move the remote chute lever on the control

panel back and forward to adjust angle of the chute

assembly.

Chute Bracket Adjustment

If the spiral at the bottom of the chute directional control

is not fully engaging with the chute assembly, the chute

bracket can be adjusted. To do so:

1. Loosen the two nuts which secure the chute bracket

and reposition it slightly. See Figure 5-5.

2. Retighten the nuts.

Figure 5-5

Maintaining

Your Snow

Thrower

WARNING

Before lubricating,

repairing or

inspecting, disengage

all controls and stop

engine. Wait until all

moving parts have

come to a complete

stop. Remove the

safety key to prevent

unintended firing of

the engine.

IMPORTANT

Avoid oil spillage on

rubber friction wheel

and aluminum drive

plate.

Figure 6-1

Figure 6-2

Lubrication

Drive and Shifting Mechanism

At least once a season or after every 25 hours of opera-

tion, remove rear cover. Lubricate any chains, sprockets,

gears, bearings, shafts, and the shifting mechanism at

least once a season. Use engine oil or a spray lubricant.

Refer to Figure 6-1.

IMPORTANT: Keep all grease and oil off the rubber

friction wheel and drive plate.

Wheels

At least once a season, remove wheels. Clean and coat

the axles with a multipurpose automotive grease before

reinstalling wheels.

Auger Shaft

At least once a season, remove the shear pins on auger

shaft. Spray lubricant inside shaft, around the spacers.

Also lubricate the flange bearings found at either end of

the shaft. See Figure 6-2.

Augers

• Theaugersaresecuredtothespiralshaftwithshear

pins and cotter pins. If the auger should strike a

foreign object or ice jam, the snow thrower is designed

so that the pins may shear. See Figure 6-2.

• Iftheaugerswillnotturn,checktoseeifthepinshave

sheared. Replacement shear pins have been provided

with the snow thrower. When replacing pins, spray an

oil lubricant into shaft before inserting new pins.

Shave Plate and Skid Shoes

The shave plate and skid shoes on the bottom of the

snow thrower are subject to wear. They should be

checked periodically and replaced when necessary.

To remove skid shoes:

1. Remove the carriage bolts (and washers if

equipped)and hex flange nuts which secure the skid

shoes to the snow thrower.

2. Reassemble new skid shoes with previously removed

hardware. Refer to Figure 6-3.

To remove shave plate:

1. Remove the carriage bolts and hex nuts which attach

it and the skid shoes to the snow thrower housing.

2. Reassemble new shave plate, making sure heads of

carriage bolts are to the inside of housing. Tighten

securely.

Replacing Belts

To remove and replace either the auger belt or the drive

belt, follow the steps below and then proceed to the

specific steps listed under respective sub-headings.

1. Disconnect the chute crank assembly at the discharge

chute end by removing the hairpin clip and the flat

washer. See Figure 6-8.

Figure 6-3

Shear Pin

Vent Plug

Grease

Fitting (optional)

Bearing

SpacersCotter Pin

Auger Shaft

Engine

Refer to the separate engine manual packed with your

unit for all engine maintenance and lubrication instruc-

tions.

Friction

Wheel

Drive

Plate

Gear

(Hex)

Shaft

Maintaining

Your Snow

Thrower

2. Remove the plastic belt cover, located near the

engine, by removing the three self-tapping screws that

secure it. See Figure 6-4.

3. a. Loosen the bolt shown in Figure 24 securing the

belt keeper bracket and remove the other bolt.

b. Push the belt keeper and bracket up off the engine

pulley. See Figure 6-54.

Auger Belt

4. Remove the clip and flat washer from the ferrule in

order to disconnect the auger idler rod from the brake

bracket assembly. See Figure 6-6.

5. Slip the auger belt (the front belt) off the engine pulley.

6. Pull the brake bracket assembly towards the cable

guide roller and unhook the auger cable “Z” fitting.

See Figure 6-7.

7. From both sides of the the frame assembly, use a 1/2”

wrench to remove the three hex tap screws securing

the frame to the auger housing assembly. See Figure

6-8.

NOTE: Do not remove the lower hex flange lock nut

on each side.

IMPORTANT

NEVER replace the

auger shear pins with

standard pins. Any

damage to the auger

gearbox or other com-

ponents, as a result of

doing so, will NOT be

covered by your snow

thrower’s warranty.

Check the condition

of both auger belt and

drive belt every 25

hours of snow thrower

operation. Replace if

either shows signs of

wear and tear.

Specifications are

subject to change

without notification or

obligation. Images may

not reflect your exact

model and are for refer-

ence purposes only.

Figure 6-5

Figure 6-6

Figure 6-7

Figure 6-4

Loosen

Remove

Figure 6-8

Maintaining

Your Snow

Thrower

WARNING

Before lubricating,

repairing or

inspecting, disengage

all controls and stop

engine. Wait until all

moving parts have

come to a complete

stop. Remove the

safety key to prevent

unintended firing of

the engine.

8. Place a block of wood underneath the auger housing

as shown in Figure 6-9 and separate auger housing

from the frame by tilting the housing forward and

pulling up the handles.

9. Block the impeller with a piece of wood to prevent if

from spinning and use a 1/2” wrench to remove the

hex screw and washer from the center of the pulley on

the auger housing. See Figure 6-10.

10. Lift the brake bracket assembly out of the pulley

groove and slide the pulley assembly off the posts of

the auger pulley adapter to remove the old belt. Refer

to Figure 6-10.

NOTE: The pulley adapter may slide off the auger input

shaft when removing the pulley. Use extra caution to

ensure the adapter does fall and/or get damaged when

removing the pulley.

11. Place the new auger belt in the V-groove of the

auger pulley and place the pulley w/belt inside the

belt keepers.

12. Turn the pulley as necessary to align its three slots

approximately with the posts of the pulley adapter,

then move the brake bracket assembly away from

the input shaft. While aligning the pulley slots and

adapter posts, push the auger pulley fully onto the

adapter. Refer to Figure 6-10.

NOTE: If the pulley adapter was removed with the

pulley, align the splines of the pulley adapter and auger

input shaft, and push the pulley and adapter onto the

input shaft. Refer to Figure 6-10.

13. Slide the washer onto the hex screw removed earlier

and apply Loctite 262 to the threads of the hex screw.

14. Insert the hex screw through the pulley assembly

and into the threads of the input shaft. Torque the

hex screw to 250-325 in./lbs. to secure the auger

pulley assembly on the input shaft.

If also replacing the drive belt, proceed to the “Drive Belt”

instruction. If not, reassemble by performing the previous

steps in the opposite order and manner of removal.

NOTE: Make sure to remove the piece of wood blocking

the impeller.

Proper Adjustment: With the auger clutch lever in the

disengaged position, the top surface of the new belt

should be even with the outside diameter of the pulley.

1. To adjust, disconnect ferrule from brake bracket

assembly and thread ferrule in (towards idler) to

increase tension on belt, and out to decrease tension.

See Figure 6-6.

NOTE: The brake puck must always be firmly seated in

the pulley groove when auger control is disengaged.

IMPORTANT: Repeat the “Auger Drive Control Test” from

the Assembly section before operating snow thrower.

Figure 6-9

Figure 6-11

Figure 6-10

IMPORTANT

Refer to the Final

Adjustment section of

the Set-Up instructions

after replacing drive

and auger belts.

Pulley Slot

Adapter Post

Drive Belt

1. If not already done, remove auger belt as previous

instructed.

a. Pull the idler pulley away from the backside of the

drive belt to relieve the tension.

b. Slide the drive belt off the idler pulley. See Figure

6-11. Carefully release the idler pulley.

2. Remove the belt from the bottom drive pulley.

3. Remove the belt from the engine pulley.

Maintaining

Your Snow

Thrower

WARNING

The rubber on the fric-

tion wheel is subject

to wear and should be

checked periodically.

Replace the friction

wheel rubber if any

signs of wear or

cracking are found.

remove the hex bolts and cupped washer and bearing

from left side of the frame. Refer to Figure 6-12.

• Holdingthefrictionwheelassembly,slidethehexshaft

out of the right side of the unit. The spacer on the left

side of the hex shaft will fall and the sprocket should

remain hanging lose in the chain.

• Liftthefrictionwheelassemblyoutbetweentheaxle

shaft and the drive shaft assemblies.

• Removefourscrewssecuringthefrictionwheelrubber

between the friction wheel plates. See Figure 6-13.

Discard old rubber.

• Reassemblethenewfrictionwheelrubbertothe

friction wheel assembly, tightening the four screws

in rotation and with equal force. It is important to as-

semble the rubber on the friction wheel symmetrically

for proper functioning.

• Insertthepinfromtheshiftarmassemblyintothe

friction wheel assembly and hold assembly in position.

Refer to Figure 6-14 .

• Slide the hex shaft through the right side of the housing

and through the friction wheel assembly.

• Insert the hex shaft through the sprocket and the

spacer. Make certain that the chain engages both the

large and the small sprocket.

NOTE: If the sprocket fell from the snow thrower while

removing the hex shaft, align sprocket on chain, place

the sprocket on the hex shaft. Position the hex hub of

the sprocket toward the friction wheel when sliding the

sprocket on to the hex shaft.

• Slidethebearingontotheleftendofthehexshaftand

press into the hole on the left side the frame.

• Securewiththecuppedwasherandhexboltremoved

earlier.

• Securetheframecoverwithself-tappingscrews.Put

the snow thrower down to its normal operating position.

Friction Wheel

Figure 6-13

Figure 6-14

Figure 6-12

Remove hex

screw and

washer

Friction

Wheel

Assembly

Slide

hex shaft

Hex Shaft

4. Install the new belt on the pulleys in the

reverse order and re-tension with the idler

pulley.

5. Reassemble your unit by performing the

previous steps in the opposite order.

Changing Friction Wheel

Rubber

WARNING: Run the engine

completely dry of gasoline

before tipping snowthrower.

• Tipthesnowthrowerupandforward,so

that it rests on the housing.

• Removescrewsfromtheframecover

underneath the snow thrower. See Figure 5-2.

• Remove the right wheel(s) from the axle.

• Usinga3/4”wrench,holdthehexshaftand

Shift Arm

Off-Season

Storage

Never store snow

thrower with fuel

in tank indoors or

in poorly ventilated

areas, where fuel

fumes may reach an

open flame, spark

or pilot light as on a

furnace, water heater,

clothes dryer or gas

appliance.

WARNING

If unit is to be stored over 30 days, prepare for storage

as instructed in the separate engine manual packed with

your snow thrower.

Clean snow thrower thoroughly.•

Lubricate as instructed in the Maintenance section of •

this manual.

Refer to engine manual for correct engine storage •

instructions.

Store the snow thrower in a clean, dry area.•

When storing any type of power equipment in a •

poorly ventilated or metal storage shed, care should

be taken to rustproof the equipment, especially

springs, cables and all moving parts.

La page est en cours de chargement...

MTD 769-04101 Manuel utilisateur

Marque: MTD

Modèle: 769-04101

Catégorie: Souffleuses à neige

Taper: Manuel utilisateur

Ce manuel convient également à

OEM-390-679

Télécharger le PDF

rapport

dans d''autres langues

English: MTD 769-04101 User manual

MTD 769-04101 Manuel utilisateur

Ce manuel convient également à

MTD 769-04101 Manuel utilisateur

dans d''autres langues

Documents connexes

Autres documents