Maruyama B23C Le manuel du propriétaire

The POWER in Outdoor Power

Completely read and understand this manual PRIOR to using this product.

Lea y entienda este manual a fondo, ANTES de usar este producto.

Lisez complètement et comprenez ce manuel AVANT d'utiliser ce produit.

OWNER'S/OPERATOR'S MANUAL

MANUAL DEL PROPIETARIO U OPERADOR

MANUEL DU PROPRIETAIRE/DE

L'UTILISATEUR

String Trimmer

Recortadora

Coupe-bordures

BT23L

®

− US-1 −

Limited Warranty Statement

All Maruyama products are warranted to the original purchaser to be free from defects in materials and workman-

ship from the date of purchase

for the time periods listed as follows:

1year for industrial, commercial, institutional, residential and income producing use.

90 days for: rental use.

Engine, refer to engine manufacture's warranty statement. Maruyama engines are covered by this warran

-

ty statement.

Any

part of a Maruyama product found to be defective within the applicable warranty period shall, at Maruyama’s

option, be repaired or replaced without charge. Warranty consideration is obtained by delivering any Maruyama

product believed to be defective to an Authorized Maruyama Servicing Dealer within the applicable warranty period.

The purchaser shall not be charged for diagnostic labor that leads to the determination that a warranted part is

defective, if the diagnostic work is performed at a Maruyama Dealer.

Any warranted part which is not scheduled for replacement as required maintenance, or which is scheduled only

for regular inspection to the effect of “repair or replace as necessary” shall be warranted for the warranty period.

Any warranted part which is scheduled for replacement as required maintenance shall be warranted for the period

of time up to the first scheduled replacement point for that part. Maruyama Mfg. Co., Inc. is liable for damages to

other engine components caused by the failure of warranted part still under warranty.

The purchaser is responsible for the performance of the required maintenance, as defined by Maruyama Mfg.

Co., Inc. in the Owner’s/Operator’s Manual.

EMISSION-RELATED PARTS WARRANTY: In addition to the above warranty coverage, Maruyama Mfg. Co.,

Inc. will repair or replace, free of charge, for the original purchaser and each subsequent purchaser any emis

-

sion-related part or parts found to be defective in material and workmanship for two (2) years from origi- nal retail

delivery date.

Emission-related parts are the carburetor assembly, the ignition coil assembly, the ignition

rotor and the spark plug and the fuel tank. Any replacement part that is equivalent in perfor- mance and dura

-

bility may be used in non-warranty maintenance or repairs, and shall not reduce the warranty obligations of

Maruyama Mfg. Co., Inc.

This warranty does not cover the following:

1.

Maintenance items (excluding defects in materials and workmanship) including hoses, spark plugs, starter

rope, air and fuel filters, clutch shoes, vibration isolators, throttle cables and all cutting attach- ments.

2.

Extra expenses including shipping and handling, travel, payment for lost time or pay and for any inconve

-

nience and storage.

3.

Alterations or modifications including aftermarket parts not authorized by Maruyama.

4.

W

ear, accident, abuse, neglect, misuse, negligence, improper fuels, lubricants, fuel mixtures (when applica-

ble), or failure to operate or maintain the product in accordance with instructions approved by Maruyama.

Repair

or replacement as provided under this warranty is the exclusive remedy of the consumer. Maruyama shall

not be liable for any incidental or consequential damages for breach of any express or implied warranty on these

products except to the extent prohibited by applicable law. Any implied warranty of merchantability or fitness for a

particular purpose on these products is limited in duration to the warranty period as defined in the limited warranty

statement. Maruyama reserves the right to change or improve the design of the product without notice and does

not assume obligation to update previously manufactured products.

This warranty provides you with specific legal rights which may vary from state to state.

It is the Owner’s and Dealer’s responsibility to make sure the Warranty Registration Card is properly filled out and

mailed to Maruyama U.S., Inc. Proof of purchase and registration will be required in order to obtain war- ranty ser

-

vice.

T

o locate an Authorized Maruyama Servicing Dealer nearest you, contact Maruyama U.S., Inc. at 1-940-383-

7400.

Maruyama U.S., Inc.

4770 Mercantile Drive, suite100,

Fort Worth, TX 76137 U.S.A.

(940)383-7400

[email protected]

www.maruyama-us.com

®

− US-2 −

FEDERAL EMISSION CONTROL WARRANTY STATEMENT

YOUR WARRANTY RIGHTS AND OBLIGATIONS

The U.S. Environmental Protection Agency (EPA)

and Maruyama Manufacturing Company, Inc.

are pleased to explain the

emission control system warranty

on your small nonroad engine.

New 1997 and later model year small nonroad engines must be designed, built and equipped, at

the time of sale, to meet the U.S. EPA regulations for small nonroad engines. The equipment

engine must be free from defects in materials and workmanship which cause it to fail to conform

with U.S. EPA stan- dards for the first two years of engine use from the date of sale to the ultimate

purchaser. Maruyama Manufacturing Company, Inc. must warrant the emission control system on

your small nonroad engine for the period of time listed above provided there has been no abuse,

neglect or improper maintenance of your small nonroad engine.

Your emission control system may include parts such as the carburetor or fuel injection system, the

ignition system, and catalytic converter. Also included may be hoses, belts, and connectors and

other emission related assemblies.

Where a warrantable condition exists, Maruyama Manufacturing Company, Inc. will repair your

small nonroad engine at no cost to you, including diagnosis (if the diagnostic work is performed at

an authorized dealer), parts, and labor.

MANUFACTURER'S WARRANTY COVERAGE:

1997 and later model year small nonroad engines are warranted for two years. If any emission-

related part on your engine is defective, the part will be repaired or replaced by Maruyama

Manufacturing Company, Inc. free of charge.

OWNER'S WARRANTY RESPONSIBILITIES:

(a) As the small nonroad engine owner, you are responsible for the performance of the required

maintenance listed in your owner's/operator's manual.

Maruyama Manufacturing Company, Inc. recommends that you retain all receipts covering

maintenance on your small nonroad engine, but Maruyama Manufacturing Company, Inc.

cannot deny warranty solely for the lack of receipts or for your failure to ensure the perfor-

mance of all scheduled maintenance. Any replacement part or service that is equivalent in

performance and durability may be used in non-warranty maintenance or repairs, and shall

not reduce the warranty obligations of the engine manufacturer.

The engine exhaust from this product

contains chemicals known to the State

of California to cause cancer, birth

defects or other reproductive harm.

WARNING

:

.

BT23L

− US-3 −

(b) As the small nonroad engine owner, you should be aware, however, that Maruyama

Manufacturing Company may deny you warranty coverage if your small nonroad engine or

a part has failed due to abuse, neglect, improper maintenance or unapproved modifications.

(c) You are responsible for presenting your small nonroad engine to a Maruyama Manufacturing

Company, Inc. service center as soon as a problem exists. The warranty repairs should be

completed in a reasonable amount of time, not to exceed

30 days.

If you have any questions regarding your warranty rights and responsibilities, you should

contact Maruyama U.S., Inc. at

1-866-783-7400, or [email protected].

COVERAGE

Maruyama Manufacturing Company, Inc. warrants to the ultimate purchaser and each subse-

quent purchaser that your small nonroad engine will be designed, built and equipped, at the

time of sale, to meet all applicable regulations. Maruyama Manufacturing Company, Inc. also

warrants to the initial purchaser and each subsequent purchaser that your small nonroad

engine is free from defects in materials and workmanship which cause the engine to fail to

conform with applic- able regulations for a period of two years.

1997 and later model years, EPA requires manufacturers to small nonroad engines for two

years. These warranty periods will begin on the date the small nonroad engine is purchased by

the ini- tial purchaser. If any emission-related part on your engine is defective, the part will be

replaced by Maruyama Manufacturing Company, Inc. at no cost to the owner.

Maruyama Manufacturing Company, Inc. shall remedy warranty defects at any authorized

Maruyama Manufacturing Company, Inc. engine dealer or warranty station. Any authorized

work done at an authorized dealer or warranty station shall be free of charge to the owner if

such work determines that a warranted part is defective. Any manufacturer-approved or

equivalent replace- ment part may be used for any warranty maintenance or repairs on

emission-related parts, and must be provided free of charge to the owner if the part is still under

warranty, Maruyama Manufacturing Company, Inc. is liable for damages to other engine

components caused by the failure of a warranted part still under warranty.

EPA‘s regulations do not include a parts list, but EPA considers emission-related warranted

parts to include all the parts listed below. These warranted parts are: the carburetor assembly,

the ignition coil assembly, the ignition rotor, the spark plug and the fuel tank.

MAINTENANCE REQUIREMENTS

The owner is responsible for the performance of the required maintenance as defined by the

Maruyama Manufacturing Company, Inc. in the owner's/operator's manual.

LIMITATIONS

This Emission Control System Warranty shall not cover any of the following:

(a) repair or replacement required because of misuse or neglect, lack of required maintenance,

repairs improperly performed or replacements not conforming to Maruyama Manufacturing

Company, Inc. specifications that adversely affect performance and/or durability, and alter-

ations or modifications not recommended or approved in writing by Maruyama

Manufacturing Company, Inc., and

(b) replacement of parts and other services and adjustments necessary for required mainte-

nance at and after the first scheduled replacement point.

− US-4 −

CALIFORNIA EMISSION CONTROL WARRANTY STATEMENT

YOUR WARRANTY RIGHTS AND OBLIGATIONS

The California Air Resources Board (CARB), and Maruyama Manufacturing Company, Inc. are

pleased to explain the emission control system warranty on your 2013 small off-road engine. In

California, new small off-road engines must be designed, built and equipped to meet the State's

stringent anti-smog standards. Maruyama Manufacturing Company, Inc. must warrant the emission

control system on your small off-road engine for the period of time listed above provided there has

been no abuse, neglect or improper maintenance of your small off-road engine.

Your emission control system may include parts such as the carburetor or fuel injection system, the

ignition system, fuel tank and catalytic converter. Also included may be hoses, belts, and connec

-tors andother emission related assemblies.

Where a warrantable condition exists, Maruyama Manufacturing Company, Inc. will repair your

small off-road engine at no cost to you, including diagnosis, parts, and labor.

MANUFACTURER'S WARRANTY COVERAGE:

The 1995 and later small off-road engines are warranted for two years. If any emission-related part

on your engine is defective, the part will be repaired or replaced by Maruyama Manufacturing

Company, Inc.

OWNER'S WARRANTY RESPONSIBILITIES:

(a) As the small off-road engine owner, you are responsible for the performance of the required

maintenance listed in your owner's/operator's manual.

Maruyama Manufacturing Company, Inc. recommends that you retain all receipts covering

maintenance on your small off-road engine, but Maruyama Manufacturing Company, Inc.

cannot deny warranty solely for the lack of receipts or for your failure to ensure the perfor-

mance of all scheduled maintenance

(b) As the small off-road engine owner, you should be aware, however, that Maruyama

Manufacturing Company may deny you warranty coverage if your small off-road engine or a

part has failed due to abuse, neglect, improper maintenance or unapproved modifications.

(c) You are responsible for presenting your small off-road engine to a Maruyama Manufacturing

Company, Inc. distribution center as soon as a problem exists. The warranty repairs should

be completed in a reasonable amount of time, not to exceed 30 days.

If you have any questions regarding your warranty rights and responsibilities, you should

contact Maruyama U.S., Inc. at

1-866-783-7400, or [email protected].

Emission System Parts

Exhaust Emission

Carburetor

Muffler

Catalytic Converter

Ignition Coil / Magneto

Spark Plug

Air Filter

EGR Valve (piston)

Fuel Filter

Evaporative Emission

Fuel Tank

− US-5 −

Contents

Page US-

Limited Warranty Statement .........................................1

Federal Emission Control .............................................2

California Emission Control .........................................4

Contents ........................................................................5

Introduction ...................................................................5

Safety ............................................................................ 6

Operator Safety ........................................................6

Trimmer Safety ........................................................6

Fuel Safety ..............................................................7

Trimmer Operating Safety .......................................7

Safety and Instruction Decals ....................................... 8

Product Description ......................................................8

Assembly .....................................................................9

Loop Handle Installation ......................................... 9

Installing Debris Shield ........................................... 9

Installing Trimmer Head ........................................10

Before Operation ........................................................10

Oil and Fuel ...........................................................10

Mixing Gasoline And Oil ......................................11

Starting And Stopping ...........................................12

Operation ....................................................................13

Operating Position ................................................. 14

Cutting with Trimmer Head ...................................14

Maintenance ................................................................15

Idle Speed Adjustment ...........................................15

Air Filter ................................................................16

Fuel Filter ..............................................................16

Spark Plug ..............................................................17

Cylinder Cooling Fins ...........................................17

Spark Arrester ........................................................ 17

Exhaust Muffler .....................................................18

Gearcase .................................................................18

General Cleaning and Tightening ..........................19

Storage ........................................................................ 19

Troubleshooting .......................................................... 20

Specifications .............................................................20

Maintenance Period ....................................................20

Introduction

Thank you for purchasing a Maruyama product.

Maruyama, it’s distributors, and dealers want you to be

completely satisfied with your new product. Please feel

free to contact your local Authorized Service Dealer for

help with service, genuine Maruyama parts, or other

information you may require.

Whenever you contact your Authorized Service Dealer

or the factory, always know the serial number of your

product. This number will help the Service Dealer or

Service Representative provide exact information about

your specific product. You will find the model and

serial number located in a unique place on the product

(Product Description on page US-8).

For your convenience, write the product model name

and serial number in the space below.

Model Name

Serial No.

Read this manual carefully to learn how to operate and

maintain your product correctly. Reading this manual

will help you and others avoid personal injury and

damage to the product.

Although Maruyama designs, produces and markets

safe, state-of-the-art products, you are responsible for

using the product properly and safely. (You are also

responsible for training persons who you allow to use

the product for safe operation.)

The MARUYAMA warning system in this manual

identifies potential hazards and has special safety

messages that help you and others avoid personal

injury, even death.

− US-6 −

DANGER, WARNlNG and CAUTION are signal

words used to identify the level of hazard. However,

regardless of the hazard, be extremely careful.

DANGER signals an extreme hazard that will cause

serious injury or death if the recommended precautions

are not followed.

WARNING signals a hazard that may cause serious

injury or death if the recommended precautions are not

followed.

CAUTION signals a hazard that may cause minor or

moderate injury if the recommended precautions are

not followed. Two other words are also used to

high¬light information. “Important” calls attention to

special mechanical information and “Note” emphasizes

general information worthy of special attention.

Safety

Operator Safety

1. Read and understand this Owner's/Operator's

before using this product. Be thoroughly familiar

with the proper use of this product.

2. Never allow children to operate the Trimmer. It is

not a toy. Never allow adults to operate the unit

without first reading the Owner's/Operator's

Manual.

3. Always wear eye protection that complies with

ANSI (American National Standards Institute)

Z87-1.

4. Always wear hearing protection.

5. Always wear heavy, long pants, a long sleeved

shirt, boots and gloves. Do not wear loose

clothing, jewelry, short pants, sandals, or go

barefoot. Secure hair so it is above shoulder

length.

6. Never operate this Trimmer when you are tired,

ill, or under the influence of alcohol, drugs or

medication.

7. Never start or run the engine inside a closed room

or building. Breathing exhaust fumes can cause

death.

8. Keep handles clean of oil, fuel and dirt.

Trimmer Safety

1. Make sure the Trimmer is assembled correctly and

that the tool attachment is correctly installed and

securely fastened as instructed in the Assembly

section.

2. Inspect the Trimmer before each use. Replace

damaged parts. Check for fuel leaks. Make sure

all fasteners are in place and tightened securely.

Follow the maintenance instructions beginning on

page US-15.

3. Make sure the cutting head does not rotate at

engine idle speed. Refer to Idle Speed

Adjustment, page US-15.

4. Inspect the cutting head and replace any parts that

are cracked, chipped or damaged before using the

Trimmer.

5. Make sure the shields is installed and positioned

correctly before using the Trimmer.

6 Never use a cutting head or replacement parts that

are not approved by MARUYAMA.

7. Maintain the Trimmer according to the

recommended maintenance intervals and

procedures in the Maintenance section on page

US-15.

8. Shut off the engine and be certain the cutting head

− US-7 −

has completely stopped rotating before checking,

inverting the Trimmer, performing maintenance

on or working on the Trimmer.

9. If running problems or excessive vibration occur,

stop immediately and inspect the unit for the

cause.

If the cause cannot be determined or is beyond

your ability to correct, return the Trimmer with

tool attachment to your servicing dealer for repair.

Fuel Safety

1. Gasoline is highly flammable and must be handled

and stored carefully. Use a container approved for

fuel to store gasoline and/or fuel/oil mixture.

2. Mix and pour fuel outdoors, where there are no

sparks or flames.

3. Do not smoke near fuel or Trimmer, or while

using the Trimmer.

4. Do not overfill the fuel tank. Stop filling 1/4-1/2

inch (6 mm-13 mm) from the top of the tank.

5. Wipe up any spilled fuel before starting the

engine.

6. Move the Trimmer at least 10 feet (3 m) away

from the fueling location before starting the

engine.

7. Do not remove the fuel tank cap while the engine

is running, or right after stopping the engine.

8. Allow the engine to cool before refueling.

9. Drain the tank and run the engine dry before

storing the unit.

10. Store fuel and Trimmer away from open flame,

sparks and excessive heat. Make sure fuel vapors

cannot reach sparks or open flames from water

heaters, furnaces, electric motors, etc.

Trimmer Operating Safety

1. THIS TRIMMER CANCAUSE SERIOUS

INJURIES. Read the instructions carefully. Be

familiar with all controls and the proper use of the

Trimmer.

2. Makesuretheφ3.5mmpinhasbeenremoved

from the gearcase and boss adapter before you

start the engine.

3. Avoid using the trimmer near rocks, gravel, stones

and similar material which can become dangerous

projectiles.

4. Inspect your work area before you begin. Remove

objects such as broken glass, nails, wire and rocks

which can become dangerous projectiles if thrown

by the Trimmer. Remove string, rope or similar

materials which can become entangled in the

cutting head.

5. Keep children, bystanders and animals outside a

50 ft. (15 m) radius from the operator and

Trimmer.

6. If you are approached while operating the

Trimmer, stop the engine and cutting head

rotation.

7. Never allow children to operate the Trimmer.

10 feet (3 m) Minimum

− US-8 −

8. Use the Trimmer only in daylight or good artificial

light.

9. Never operate the Trimmer without proper guards

or other protective safety devices in place.

10. Always keep the Trimmer on the right side of your

body.

11. Do not raise the cutting head above waist level.

12. Do not put hands or feet near or under any rotating

parts. Keep clear at all times. Keep all parts of

your body away from the rotating cutting

attachment and hot surfaces such as the muffler.

13. Keep firm footing and balance. Do not overreach.

14. Use the right tool for the job. Do not use the

Trimmer for any job that is not recommended by

Safety and Instruction Decals

Safety decals and instructions are easily visible to the operator and are located near any area of

potential danger. Replace any decal that is damaged or lost

Product description

BT23L

7. Clutch Drum Housing

8. Engine

9. Serial Number (on rear of engine)

10. Air Filter

11. Fuel Tank

12. Throttle Cable and Stop Switch

Wires

13. Debris Shield

14. Trimmer Head

ON SHAFT (Part No.221501)

ON SHAFT (Part No.221502)

1. Gearcase

2. Shaft Assembly

3. Model Name

4. Safety Decal

5. Loop Handle

6. Throttle Trigger and Stop Switch

]

9

− US-9 −

Loop Handle

Screw (4)

Bottom Clamp

Nut (4)

Assembly

Loop Handle Installation

1. Place the loop handle and the bottom clamp on the

shaft approximately 28cm(11 inches) from the end

of the stop switch/throttle trigger assembly.

2. Install the four screws and nuts. Leave the screws

fingertight.

3. Reposition the loop handle up or down the

driveshaft to the most comfortable position, but

no closer than 9 inches (22.8 cm) from the end of

the stop switch.

4. Tighten the screws and nuts.

Installing Debris Shield

WARNING

POTENTIAL HAZARD

•

Foreign objects can be thrown by String

Trimmer. WHAT CAN HAPPEN

•

Contact with thrown objects can cause

personal injury. HOW TO AVOID THE

HAZARD

•

Never operate the String Trimmer without

the trimmer head shield in place.

CAUTION

POTENTIAL HAZARD

•

The String cutoff blade is sharp. WHAT

CAN HAPPEN

•

Contact with cutoff blade can cause serious

cuts or personal injury. HOW TO AVOID

THE HAZARD

•

Keep hands, feet and clothing away from

cutoff blade.

1. Fasten the string cutoff blade to the trimmer head

shield with two M5 x 12 screws and hex nuts.

2. Attach the trimmer head shield to the gearcase

with the two M5 x 30 screws and plate as shown.

Loop Handle

Screw (4)

Bottom Clamp

Nut (4)

Loop Handle

Screw (4)

Bottom Clamp

Nut (4)

− US-10 −

Installing Trimmer Head

WARNING

POTENTIAL HAZARD

•

If the Trimmer Head is not adequately

tightened, it can come loose from the String

Trimmer during use.

WHAT CAN HAPPEN

•

This may cause damage to property or

personal injury.

HOW TO AVOID THE HAZARD

•

Make sure the trimmer head is securely

fastened to the attaching shaft in the

gearcase.

IMPORTANT: The boss adapter must be, installed

on the attaching shaft between the gearcase and the

trimmer head as shown. And attaching shaft is left-

head threaded.

1. Install the boss adapter onto the attaching shaft

out of the gearcase.

2. Align the hole in the boss adapter with the hole in

the gearcase.

3. Insert the 3.5 mm pin into the holes in the boss

adapter and gearcase to lock the attaching shaft.

4. Thread the attaching shaft into the trimmer head

adapter, then tighten the trimmer head firmly by

hand.

5. Remove the 3.5mm pin from the boss adapter and

gearcase.

Before Operation

Oil and Fuel

DANGER

POTENTIAL HAZARD

•

In certain conditions gasoline is extremely

flammable and highly explosive.

WHAT CAN HAPPEN

•

A fire or explosion from gasoline can burn

you, others and cause property damage.

HOW TO AVOID THE HAZARD

•

Use a funnel and fill the fuel tank outdoors,

in an open area, when the engine is cold.

Wipe up any gasoline that spills.

•

Do not fill the fuel tank completely full. Add

gasoline to the fuel tank until the level is 1/4”

to 1/2” ( 6 mm to 13mm ) below the bottom

of the filler neck. This empty space in the

tank allows gasoline to expand.

•

Never smoke when handling gasoline, and

stay away from an open flame or where

gasoline fume may be ignited by a spark.

•

Store gasoline in an approved container and

keep it out of the reach of children.

•

Never buy more than a 30-day supply of

gasoline.

1. Do not smoke near fuel.

2. Mix and pour fuel outdoors and where there are

no sparks or flames.

WARNING

POTENTIAL HAZARD

•

Gasoline contains gasses that can build up

pressure inside a gas tank.

WHAT CAN HAPPEN

•

Fuel can be sprayed on you when removing

gas cap.

HOW TO AVOID THE HAZARD

•

Remove fuel cap slowly to avoid injury from

fuel spray.

− US-11 −

3. Always shut off the engine before refueling.

Never remove the fuel tank cap while the engine

is running or right after just stopping the engine.

4. Always open the fuel tank cap slowly to release

any possible overpressure inside the tank.

5. Do not overfill the fuel tank. Stop filling 1/4-1/2

inch (6 mm-13 mm) from the top of the tank.

6. Tighten the tank fuel cap carefully but firmly after

refilling.

7. Wipe up any spilled fuel before starting the

engine.

8. Move the unit at least 10 feet (3 m) away from the

fueling location and fuel storage container before

starting the engine.

Recommended Oil Type

Only use a two-cycle engine oil formulated for use in

high performance, air cooled two cycle engines.

MARUYAMA brand 2-cycle oil is formulated for use

in high performance, air cooled two-cycle engines.

IMPORTANT: Do not use National Marine

Manufacturer’s Association (NMMA) or BIA

certified oils. This type of 2-cycle engine oil does

not have the proper additives for air cooled,

2-cycle engines and can cause engine damage.

Do not use automotive motor oil. This type of oil

does not have the proper additives for air cooled,

2-cycle engines and can cause engine damage.

Recommended Fuel Type

Use clean, fresh lead-free gasoline, including

oxygenated or reformulated gasoline, with an octane

rating of 85 or higher. To ensure freshness, purchase

only the quantity of gasoline that can be used in 30

days. Use of lead-free gasoline results in fewer

combustion chamber deposits and longer spark plug

life. Use of premium grade fuel is not necessary or

recommended.

Use Of Fuel Additives

IMPORTANT: NEVER USE ALCOHOL,

GASOHOL CONTAINING MORE THAN 10%

ALCOHOL BECAUSE ENGINE FUEL

SYSTEM DAMAGE COULD RESULT.

DO NOT USE FUEL ADDITIVES OTHER

THAN THOSE MANUFACTURED FOR FUEL

STABILIZATION DURING STORAGE SUCH

AS MARUYAMA’S STABILIZER/ CONDITIO-

NER OR A SIMILAR PRODUCT.

MARUYAMA’S STABILIZER/CONDITIONER

IS A PETROLEUM DISTILLATE BASED

CONDITIONER/STABILIZER. MARUYAMA

DOES NOT RECOMMEND STABILIZERS

WITH AN ALCOHOL BASE SUCH AS ETHA-

NOL, METHANOL OR ISOPROPYL.

ADDITIVES SHOULD NOT BE USED TO TRY

TO ENHANCE THE POWER OR PERFOR-

MANCE OF MACHINE.

Mixing Gasoline And Oil

IMPORTANT: The engine used on this Trimmer

is of a 2-cycle design. The internal moving parts

of the engine, i.e., crankshaft bearings, piston pin

bearings and piston to cylinder wall contact

surfaces, require oil mixed with the gasoline for

lubrication.

Failure to add oil to the gasoline or failure to mix

oil with the gasoline at the appropriate ratio will

cause major engine damage which will void your

warranty.

For your fuel premix, use Maruyama Premium 2-

cycle Oil Mix, or equivalent ISO-L-EGD & JASO

FD oil with a minimum 89 octane high Quality

gasoline. Maruyama 2-cycle oil is specially

formulated to meet the requirements of high-

performance, low-emission air-cooled 2-cycle

engines. Use of other oils may lead to service

issues which may Not be covered by your

warranty.

− US-12 −

Fuel Mixture

The fuel: oil ratio is 50 parts gasoline to 1 part oil or

50:1.

Note: Never use a mixing ratio less than 50:1

regardless of the oil package mixing

instructions. Ratios less than 50:1, (for

example, 60:1, 80:1, 100:1), reduce the

amount of lubrication to the internal moving

parts of the engine and can cause damage.

Fuel Mixture Chart

Gasolin 50:1 2-cycle oil

1gallon 2.6oz.

2gallon 5.1oz.

5gallon 12.8oz.

1liter 20ml

5liter 100ml

Mixing Instructions

IMPORTANT: Never mix gasoline and oil

directly in the Trimmer fuel tank.

1. Always mix fuel and oil in a clean container

approved for gasoline.

2. Mark the container to identify it as fuel mix for

the Trimmer.

3. Use regular unleaded gasoline and fill the

container with half the required amount of

gasoline.

4. Pour the correct amount of oil into the container

then add the remaining amount of gasoline.

5. Close the container tightly and shake it

momentarily to evenly mix the oil and the

gasoline before filling the fuel tank on the

Trimmer.

6 When refilling the Trimmer fuel tank, clean

around the fuel tank cap to prevent dirt and debris

from entering the tank during cap removal.

7 Always shake the premix fuel container momen-

tarily before filling the fuel tank.

8 Always use a spout or funnel when fueling to

reduce fuel spillage.

9 Fill the tank only to within 1/4-1/2 inch (6 mm-13

mm) from the top of the tank. Avoid filling to the

top of the tank filler neck.

Starting And Stopping

Before Starting The Engine

1. Fill the fuel tank as instructed in the Before

Operation section of this manual (page US-10).

2. Rest the Trimmer on the ground.

3. Make sure the cutting attachment is clear of any

broken glass, nails, wire, rocks or other debris.

4. Keep all bystanders, children and animals away

from the working area.

Cold Starting Procedure

This Trimmer is equipped with a fuel primer and a

choke system. To start a “cold” engine properly,

perform the following procedure:

1. Pump the primer bulb at the bottom of the carbu-

retor until fuel can be seen flowing through the

fuel return line to the fuel tank. (Flowing fuel

should be almost clear, not foamy or full of

bubbles.)

2. Move the choke lever to the closed (

) position

and move the stop switch to the “ON” position.

50:1

− US-13 −

3. Lock the throttle trigger in the fast-idle start

position, then pull the starter grip.

CAUTION

•

Do not pull the Starter rope all the way out.

WARNING

• Do not disassemble the Starter.

Please ask for an authorized MARUYAMA

service dealer.

After the engine starts, squeeze and release the throttle

trigger to return it to the idle position, then move the

choke lever to the open (

) position.

If the engine stops running before you move the choke

lever to the open (

) position:

Go ahead and open the choke, pull the starter grip with

the throttle tigger positioned at Fast-idle position.

Hot Restart

To start an engine that is already warmed up (hot

restart), or if the ambient temperature exceeds 68°F

(20°C):

1. Pump the primer bulb at the bottom of the car-

buretor until fuel can be seen flowing through the

fuel return line to the fuel tank.

2. Move the choke lever to the open (

) position

and move the stop switch to the “ON” position.

3. Leave the throttle trigger in the idle position and

pull the starter grip.

4. If the engine fails to start after three to four pulls,

follow the instruction in the Cold Starting

Procedure section (this page).

If the engine fails to start after you follow the

above procedures, contact an authorized

MARUYAMA dealer.

To Stop The Engine:

1. Release the throttle trigger.

2. Slide the stop switch to the “STOP” position.

Operation

WARNING

POTENTIAL HAZARD

•

Foreign objects can be thrown by String

Trimmer.

WHAT CAN HAPPEN

•

Contact with thrown objects can cause

personal injury.

HOW TO AVOID THE HAZARD

•

Never operate the String Trimmer without

the guard.

− US-14 −

CAUTION

•

Read the Safety instructions on page US-6

concerning proper use of the String Trimmer.

Operating Position

Before using the Trimmer, check the following:

1. Make sure the Holding Tool (3.5mm Pin) has been

removed from the gearcase and boss adapter

before you start the engine.

2. The Trimmer must be on the operator’s right side.

3. The operator’s right hand should be holding the

shaft grip, with his or her fingers on the throttle

trigger. The right arm should be slightly bent.

4. The left hand should be holding the loop handle

with the fingers and thumb fully enclosed around

the grip. The left arm may be extended.

Reposition the loop handle up or down the

driveshaft if necessary for a comfortable position.

5. The trimmer weight should be evenly distributed

between the arms. The cutting attachment should

be near and parallel to the ground.

6. Accelerate and hold the engine at cutting speed

before entering the material to be cut.

7. Always release the throttle trigger and allow the

engine to return to idle speed when not cutting.

8. Stop the engine when moving between work sites.

CAUTION

•

Always wear gloves and protective clothing

when operating the String Trimmer.

•

If the trimmer head becomes jammed, stop the

engine immediately.

•

Make certain all moving parts have stopped and

disconnect the spark plug before inspecting the

•

Never use a String Trimmer that has chipped,

cracked or broken trimmer head.

Cutting with Trimmer Head

•

The tip of the line does the cutting. The line should

stay extended while cutting.

•

Do not force the line into the material. Forcing the

line will cause it to slap against the material,

increasing line usage and causing poor cutting

results.

Three inchs (7,6cm)

above Ground

CORRECT

INCORRECT

Three inchs (7,6cm)

above Ground

CORRECT

INCORRECT

Three inchs (7,6cm)

above Ground

CORRECT

INCORRECT

− US-15 −

Trimming

Hold the bottom of the trimmer head about 3 in. (7.6

cm) above the ground and at an angle. Allow only the

tip of the line to make contact.

Scaling

To remove unwanted vegetation, hold the trimmer head

about 3 in. (7.6 cm) above the ground and at an angle.

Allow the tip of the line to strike the ground cutting the

vegetation off at the surface.

Mowing

Keep the line parallel to the ground and use a gentle

side to side motion.

Maintenance

Maintenance, replacement or repair of emission control

devices and systems may be performed by any repair

establishment or individual; however, warranty repairs

must be performed by a dealer or service center

authorized by Maruyama Manufacturing Company,

Inc. The use of parts that are not equivalent in

performance and durability to authorized parts may

impair the effectiveness of the emission control system

and may have a bearing on the outcome of a warranty

claim.

Idle Speed Adjustment

This Trimmer is equipped with nonadjustable fuel

mixture carburetor. The engine idle speed is the only

adjustment for the operator.

WARNING

POTENTIAL HAZARD

•

Engine must be running to make carburetor

adjustments.

•

When engine is running, cutting head is

rotating and other parts are moving.

WHAT CAN HAPPEN

•

Contact with rotating cutting head or other

moving parts could cause serious personal

injury or death.

HOW TO AVOID THE HAZARD

•

Keep hands, feet and clothing away from

attached tool and other moving parts.

•

Keep all bystanders and pets away from unit

while making carburetor adjustments.

The cutting head may be rotating/moving during idle

speed adjustment. Wear the recommended personal

protective equipment and observe all safety

instructions. Keep hands and body away from the

cutting head.

When the throttle trigger is released, the engine should

return to an idle speed between 2700 and 3300 RPM,

or just below the clutch engagement speed. The

Attached Tool must not rotate/move and the engine

should not stall (stop running) at engine idle speed.

To adjust the engine idle speed, rotate the idle speed

Three inchs (7,6cm)

above Ground

Three inchs (7,6cm)

above Ground

Three inchs (7,6cm)

above Ground

Three inchs (7,6cm)

above Ground

Three inchs (7,6cm)

above Ground

Three inchs (7,6cm)

above Ground

− US-16 −

adjustment screw on the carburetor.

•

Turn the idle speed screw in (clockwise) to increase

the engine idle speed.

•

Turn the screw out (counterclockwise) to decrease

the engine idle speed.

If idle speed adjustment is necessary, and after

adjustment the cutting head rotates or the engine

stalls, stop using the Trimmer immediately!

Contact your local authorized MARUYAMA Dealer for

assistance and servicing.

Air Filter

Maintenance Interval

•

The air filter should be cleaned daily, or more often

when working in extremely dusty conditions.

•

Replace after every 100 hours of operation.

Air Filter Cleaning

1. Loosen the knob and remove the air filter cover.

2. Remove the foam element and filter screen from

the air filter body.

3. Clean the foam element and filter screen with

warm, soapy water. Let the screen and element

dry completely.

4. Apply a light coat of SAE 30 motor oil to the

foam element and squeeze out all excess oil.

5. Reassemble the filter screen, foam element and to

the air filter cover.

Fuel Filter

Maintenance Interval

The fuel filter should be replaced after every 100 hours

of operation.

Fuel Filter Replacement

The fuel filter is attached to the end of the fuel pick-up

hose inside the fuel tank.

1. Make sure the fuel tank is empty.

2. Remove the fuel cap.

3. Using a wire hook, gently pull the fuel filter out

through the fuel filler opening.

4. Grasp the fuel hose next to the fuel filter fitting

and remove the filter, but do not release the hose.

5. While still holding on to the fuel hose, attach the

new fuel filter.

6. Drop the new fuel filter back into the fuel tank.

7. Make sure that the fuel filter is not stuck in a

corner of the tank, and that the fuel hose is not

doubled over (kinked) before refueling.

− US-17 −

Spark Plug

Maintenance Interval

•

The spark plug should be removed from the engine

and checked after each 25 hours of operation.

•

Replace the spark plug after every 100 hours of

operation.

Spark Plug Maintenance

1. Twist the high tension lead boot on the spark plug

back and forth a couple of times to loosen the

boot, then pull the boot off of the spark plug.

2. Remove the spark plug.

3. Clean the electrodes with a stiff brush.

4. Adjust the electrode air gap to .024-.028 in (0.6-

0.7 mm).

5. Replace the spark plug if it is oil-fouled, damaged,

or if the electrodes are worn down.

6. Do not overtighten the spark plug when installing.

The tightening torque is 95-148 in. lbs. (10.7-16.6

N·m).

7. Always use only the specific heat range of spark

plug. This is particularly critical with today's

lowemission engines. For best results, use the

exact replacement.

Cylinder Cooling Fins

Maintenance Interval

The cylinder cooling fins should be cleaned after every

25 hours of operation, or once a week, whichever

comes first. Air must flow freely around and through

the cylinder cooling fins to prevent engine overheating.

Leaves, grass, dirt and debris buildup on the fins will

increase the operating temperature of the engine, which

can reduce engine performance and shorten engine life.

Cooling Fin Cleaning

1. With the engine at ambient (room) temperature,

loosen the knob and remove the air filter cover.

2. Twist the high tension lead boot on the spark plug

back and forth a couple of times to loosen the

boot, then pull the boot off of the spark plug.

3. Loosen the knob and lift off the cylinder cover.

4. Clean all dirt and debris from the cooling fins and

from around the cylinder base.

5. Reinstall the fan cover and the filter cover.

Spark Arrester

WARNING

POTENTIAL HAZARD

•

Muffler surface becomes hot whenTrimmer

in operation and remains hot for some time

after the engine is shut off.

WHAT CAN HAPPEN

•

Contact with hot muffler surfaces could

cause a burn.

HOW TO AVOID THE HAZARD

•

Make sure the muffler is cool before

inspecting and cleaning the spark arrester.

Air Filter Cover

Cylinder Cover

High Tension

Lead Boot

Knob

Cooling

Fins

Knob

− US-18 −

Maintenance Interval

•

The spark arrester should be inspected and cleaned

after every 25 hours of use.

•

Replace the screen if it cannot be thoroughly

cleaned, or if it is damaged.

Spark Arrester Maintenance

1. With the engine at ambient (room) temperature,

loosen the knob and remove the air filter cover.

2. Twist the high tension lead boot on the spark plug

back and forth a couple of times to loosen the

boot, then pull the boot off of the spark plug.

3. Loosen the knob and lift off the cylinder cover.

4. Remove and clean the tail, gasket and spark

arrester with a safety solvent and a stiff brush. If

any part cannot be thoroughly cleaned, it must be

replaced.

5. Reinstall the spark arrester and tail onto the

muffler, then reinstall and tighten the two socket

headscrews.

6. Reinstall the cylinder cover and the air filter

cover.

Exhaust Muffler

Maintenance Interval

The muffler should be inspected and cleaned after each

100 hours of use.

Muffler Maintenance

1. With the engine at ambient (room) temperature,

loosen the knob and remove the air cleaner cover.

2. Twist the high tension lead boot on the spark plug

back and forth a couple of times to loosen the

boot, then pull the boot off of the spark plug.

3. Loosen the knob and lift off the cylinder cover.

4. Remove the spark arrester (see spark arrester

maintenance), Clean the muffler with a stiff brush.

IMPORTANT: Don’t use solvent for cleaning inside

of muffler, because of the catalytic converter in

muffler.

Be careful not to allow any dirt or debris to fall into

the exhaust port, as this can cause engine damage.

5. Reinstall the spark arrester and tail onto muffler,

then reinstall and tighten the two socket head

screws.

6. Reinstall the cylinder cover and the air filter

cover.

Gearcase

Maintenance Interval

The gearcase should be checked for lubrication after

each 30 hours of use.

Gearcase Lubrication

Remove the cutting attachment and the boss adapter.

Clean any dirt and debris from the area between the

boss adapter and the gearcase. Remove the grease plug

from the side of the gearcase. While rotating the attach-

ing shaft, inject lithium-base bearing lube (P/N

211337) through the plug hole until the gearcase is full.

Reinstall the boss adapter and grease plug.

− US-19 −

General Cleaning and Tightening

The Trimmer will provide maximum performance for

many, many hours if it is maintained properly.

WARNING

POTENTIAL HAZARD

•

When engine is running, Attached Tool is

rotating/ moving and other parts are moving.

WHAT CAN HAPPEN

•

Contact with rotating/moving Tool or other

moving parts could cause serious personal

injury or death.

HOW TO AVOID THE HAZARD

•

Always turn off your Trimmer before you

clean or perform any maintenance on it.

Good maintenance includes regular checking of all

fasteners for correct tightness and cleaning the entire

machine.

Storage

For long term storage of the Trimmer:

1. Empty the fuel tank into a suitable fuel storage

container.

2. Pump the primer bulb on the carburetor until all

fuel is discharged through the clear fuel return

hose.

3. Run the engine to remove any fuel that may

remain in the carburetor.

4. Perform all regular maintenance procedures and

any needed repairs.

5. Remove the spark plug and squirt a very small

amount of oil into the cylinder.

CAUTIONN

POTENTIAL HAZARD

•

Oil may squirt out of the spark plug opening

when you pull the starter grip.

WHAT CAN HAPPEN

•

Oil can cause eye injuries.

HOW TO AVOID THE HAZARD

•

Protect your eyes and keep your face away

from the spark plug opening.

6. Pull the starter grip once.

7. Slowly pull the starter grip to bring the piston to

the top of the cylinder (TDC).

8. Reinstall the spark plug.

9. Store the Trimmer in a dry place away from

excessive heat, sparks or open flame.

Bearing Lube

(P/N 211337)

Grease Plug

Plug Hole

Gearcase

Attaching Shaf

t

Boss Adapter

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