ENGLISH
Owner’s Manual
212CC
Viper 4-Cycle Engine
Model #’s: 24129 / 25145 /
31776
GAS/OIL
RATIO
50:1
© 2019 Ardisam
All Rights Reserved
P/N: 31756
REV 2: 08/30/2019
Get parts or technical assistance online at
www.GetEarthquake.com or call (800) 345-6007
FRANÇAIS - PAGE 21
THIS INSTRUCTION BOOKLET CONTAINS IMPORTANT SAFETY INFORMATION. PLEASE READ AND KEEP FOR FUTURE REFERENCE.
24129 SHOWN
31776 SHOWN
2
Owner’s Manual
212CC VIPER 4-CYCLE ENGINE
Get parts online at www.GetEarthquake.com or Call 800-345-6007 M-F 8-5 CST
INTRODUCTION
Thank you for purchasing your product from Viper®. We have worked to ensure that this product meets the highest standards for
usability and durability. With proper care, your purchase will provide many years of service.
Please read this entire manual before installation and use. Viper® reserves the right to change, alter or improve the product and
this document at any time without prior notice. Due to continuous product improvements, product images may not be exact.
Some assembly may be required.
Read and keep this manual for future reference. This manual contains important information on safety, assembly, operation and
maintenance. The owner must be certain that all the product information is included with the unit. This information includes the
manual, the replacement parts and the warranties. This information must be included to make sure state laws and other laws
are followed. All persons to whom rent/loan this unit must have access to and understand this information. This manual should
remain with the product even if it is resold.
CONTENTS
Introduction/Contents ..................................................................................................................................................................................................................2
Warnings and Safety Precautions ..........................................................................................................................................................................................3-6
Features ..............................................................................................................................................................................................................................................8
Operation .....................................................................................................................................................................................................................................9-12
Maintenance and Storage ................................................................................................................................................................................................... 13-16
Troubleshooting and Repair ...............................................................................................................................................................................................17-18
FEDERAL EMISSION INFORMATION
Viper warrants to the retail purchaser, that this small, o-road engine was designed, built and equipped to conform at the time
of initial sale to all applicable regulations of the U.S. Environmental Protection Agency (EPA) and those of the State of California
(CARB).
3
Owner’s Manual
212CC VIPER 4-CYCLE ENGINE
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NOTICE
NOTICE INDICATES YOUR EQUIPMENT CAN BE DAMAGED
IF THE SAFETY INSTRUCTIONS THAT FOLLOW THIS SIGNAL
WORD ARE NOT OBEYED.
WARNINGS AND SAFETY PRECAUTIONS
OWNER’S RESPONSIBILITY
Accurate assembly and safe and eective use of the machine is
the owner’s responsibility.
• Read and follow all safety instructions.
• Carefully follow all assembly instructions.
• Maintain the machine according to directions and
schedule included in this Earthquake® operator’s manual.
• Ensure that anyone who uses the machine is familiar with
all controls and safety precautions.
SPECIAL MESSAGES
Your manual contains special messages to bring attention to
potential safety concerns, machine damage as well as helpful
operating and servicing information. Please read all the infor-
mation carefully to avoid injury and machine damage.
NOTE: General information is given throughout the manual
that may help the operator in the operation or service of the
machine.
This symbol points out important safety instructions
which if not followed could endanger your personal
safety. Read and follow all instructions in this manual
before attempting to operate this equipment.
BEFORE OPERATING EQUIPMENT:
Please read this section carefully. Read entire operating and
maintenance instructions for this product. Failure to follow in-
structions could result in serious injury or death. Operate the
machine according to the safety instructions outlined here and
inserted throughout the text. Anyone who uses this machine
must read the instructions and be familiar with the controls.
CAUTION
CAUTION INDICATES A HAZARD WHICH, IF NOT AVOIDED,
COULD RESULT IN PERSONAL INJURY AND/OR PROPERTY
DAMAGE.
WARNING
WARNING INDICATES A HAZARD WHICH, IF NOT AVOIDED,
COULD RESULT IN DEATH OR SERIOUS INJURY AND/OR
PROPERTY DAMAGE.
DANGER
DANGER INDICATES A HAZARD WHICH, IF NOT AVOIDED,
CERTAINLY WILL RESULT IN DEATH OR SERIOUS INJURY
AND/OR PROPERTY DAMAGE.
IMPORTANT
IMPORTANT INDICATES HELPFUL INFORMATION FOR
PROPER ASSEMBLY, OPERATION OR MAINTENANCE OF
YOUR EQUIPMENT.
WARNING
YOU MUST READ, UNDERSTAND AND COMPLY WITH ALL
SAFETY AND OPERATING INSTRUCTIONS IN THIS MANUAL
BEFORE ATTEMPTING TO SETUP AND OPERATE YOUR
MACHINE.
FAILURE TO COMPLY WITH ALL SAFETY AND OPERATING
INSTRUCTIONS CAN RESULT IN LOSS OF MACHINE
CONTROL, SERIOUS PERSONAL INJURY TO YOU AND/OR
BYSTANDERS, AND RISK OF EQUIPMENT AND PROPERTY
DAMAGE. THE TRIANGLE IN THE TEXT SIGNIFIES
IMPORTANT CAUTIONS OR WARNINGS WHICH MUST BE
FOLLOWED.
DANGER
CALIFORNIA PROPOSITION 65 WARNING
ENGINE EXHAUST FROM THIS PRODUCT CONTAINS
CHEMICALS KNOWN TO THE STATE OF CALIFORNIA TO
CAUSE CANCER, BIRTH DEFECTS, OR OTHER
REPRODUCTIVE HARM.
4
Owner’s Manual
212CC VIPER 4-CYCLE ENGINE
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WARNING
ENGINES GIVE OFF CARBON MONOXIDE, AN ODORLESS,
COLORLESS, POISONOUS GAS. CARBON MONOXIDE MAY
BE PRESENT EVEN IF YOU DO NOT SMELL OR SEE ANY
ENGINE EXHAUST. BREATHING CARBON MONOXIDE
CAN CAUSE NAUSEA, FAINTING OR DEATH, IN ADDITION
TO DROWSINESS, DIZZINESS AND CONFUSION.
IF YOU EXPERIENCE ANY OF THESE SYMPTOMS, SEEK
FRESH AIR AND MEDICAL ATTENTION IMMEDIATELY.
HOT GASES ARE A NORMAL BYPRODUCT OF A
FUNCTIONING INTERNAL COMBUSTION ENGINE. FOLLOW
ALL SAFETY INSTRUCTIONS TO PREVENT BURNS AND
FIRES.
DO NOT ALTER/MODIFY ENGINE:
• NEVER ALTER OR MODIFY THE ENGINE FROM THE
FACTORY. SERIOUS INJURY OR DEATH MAY OCCUR IF
ENGINE IS MODIFIED OR ALTERED.
WHEN WORKING ON OR REPLACING PARTS FOR THE
ENGINE OR PRODUCT, YOU MUST ALWAYS PUT THE ON/
OFF SWITCH TO THE OFF POSITION.
ENGINE SAFETY PRECAUTIONS
PREVENTING CARBON MONOXIDE POISONING
• Never try to ventilate engine exhaust indoors. Carbon
monoxide can reach dangerous levels very quickly.
• Never run engine outdoors where exhaust fumes may
be pulled into a building.
• Never run engine outdoors in a poorly ventilated area
where the exhaust fumes may be trapped and not easily
taken away. (Examples include: in a large hole or areas
where hills surround your working area.)
• Never run engine in an enclosed or partially enclosed
area. (Examples include: buildings that are enclosed on
one or more sides, under tents, car ports or basements.)
• Always run the engine with the exhaust and muer
pointed in the direction away from the operator.
• Never point the exhaust muer towards anyone. People
should always be many feet away from the operation of
the engine and its attachments.
• Do not change the engine governor settings or over-
speed the engine.
• Stay away from rotating parts. Place protective covers
over rotating parts.
• Do not use engine around dry brush, cloth rags, or other
ammable materials.
• Always keep materials and debris clear of muer guard
and other hot engine parts.
• Never operate the engine without the muer guard in
place.
• Always make sure the exhaust pipe is free of foreign
objects.
• The engine exhaust becomes very hot during operation.
Keep engine at least three feet away from buildings and
other equipment during operation.
• Wear appropriate clothing such as a long-sleeved shirt
or jacket. Also wear long trousers or slacks. Do not wear
shorts. Never wear sandals, sneakers, or open shoes, and
never operate the machine with bare feet.
• Do not wear loose clothing or jewelry. They can get
caught in moving parts. Always keep hands, feet, hair and
loose clothing away from any moving parts on engine
and machine.
GASOLINE FIRES AND HANDLING FUEL SAFELY
Use extra care in handling gasoline and other fuels. They are
ammable and vapors are explosive.
• When storing extra fuel be sure that it is in an appropriate
container and away from any re hazards.
• Prevent re and explosion caused by static electric
discharge. Use only nonmetal, portable fuel containers
approved by the Underwriter’s Laboratory (U.L.) or the
American Society for Testing & Materials (ASTM).
• Always ll fuel tank outside in a well ventilated area. Never
ll your fuel tank with fuel indoors. (Examples include:
basement, garage, barn, shed, house, porch, etc.) Never
ll tank near appliances with pilot lights, heaters, or other
ignition sources. If the fuel has to be drained, this should
be done outdoors and with the proper equipment. Do not
pour fuel from fuel tank. The drained fuel should be stored
in a container specically designed for fuel storage or it
should be disposed of carefully.
• Never remove the fuel cap or add fuel with the engine
running. Stop engine and allow to cool before removing
the fuel cap/and or relling the engine.
• Do not smoke near or while handling engine fuel.
• Never drain fuel from engine in an enclosed area.
• Always wipe up excess (spilled) fuel from engine be-
fore starting. Clean up spilled fuel immediately. If fuel is
spilled do not start the engine but move product and fuel
container from area. Clean up spilled fuel and allow to
evaporate and dry after wiping and before starting.
5
Owner’s Manual
212CC VIPER 4-CYCLE ENGINE
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• Allow fuel fumes/vapors to escape from the area before
starting engine.
• Test the fuel cap for proper installation before starting and
using the engine.
• Always run the engine with the fuel cap properly installed
on the engine.
• Never smoke while relling fuel tank or while operating
the engine.
• Do not store engine with fuel in fuel tank indoors. Fuel
and fuel vapors are highly explosive.
• During storage, tightly screw down fuel cap.
• Never pour fuel from engine fuel tank.
• Never siphon fuel by mouth to drain fuel tank.
• Always have an adult ll the fuel tank and never allow
children to ll the engine.
• Never allow an adult or anyone under the inuence of
drugs or alcohol to ll engine.
• When storing gasoline or equipment with fuel in the tank,
store away from furnaces, stoves, water heaters or other
appliances that have a pilot light or other ignition source
because they can ignite gasoline vapors.
BURNS AND FIRES
The muer, muer guard and other parts of the engine be-
come extremely hot during the operation of the engine. These
parts remain extremely hot after the engine has stopped.
PREVENTION OF BURNS AND FIRES
• Never remove the muer guard from the engine.
• Never touch the muer guard because it is extremely hot
and will cause severe burns.
• Never touch parts of the engine that become hot after
operation.
• Always keep materials and debris away from muer guard
and other hot parts of the engine to avoid res.
SERVICE
• Always stop the engine whenever you leave the equip-
ment, before cleaning, repairing or inspecting the unit.
Engine should be turned o and cool, spark plug wire
must be removed from spark plug before any repairs or
adjustments are attempted. Never make adjustments or
repairs with the engine (motor) running. Disconnect the
spark plug wire, and keep the wire away from the plug to
prevent accidental starting.
• Always wear eye protection when you make adjustments
or repairs.
• Keep all nuts and bolts tight and keep equipment in good
condition.
• Never tamper with safety devices. Check their proper
operation regularly.
• When servicing or repairing the engine, do not tip the en-
gine over or up unless specically instructed to do so in this
manual. Service and repair procedures can be done with
the engine in an upright position. Some procedures will be
easier if the engine is lifted on a raised platform or working
surface.
• To reduce re hazard, keep engine free of grass, leaves, or
other debris build-up. Clean up oil or fuel spillage. Allow
engine to cool before storing.
• Stop and inspect the equipment if you strike an object.
Repair, if necessary, before restarting.
• Clean and replace safety and instruction decals as neces-
sary.
• To guard against engine over-heating, always have engine
debris lter mounted and clean.
• Inspect engine before storage. When not in use, dis-
connect spark plug lead and store indoors in a dry place
locked or otherwise inaccessible to children.
• Use only original equipment parts from Viper, including all
nuts and bolts.
SAFETY DECALS
This engine has been designed and manufactured to provide
you with the safety and reliability you would expect from an
industry leader in outdoor power equipment manufacturing.
Although reading this manual and the safety instructions it
contains will provide you with the necessary basic knowledge
to operated this equipment safely and eectively, we have
placed several safety labels on the engine to remind you of this
important information while you are operating the unit.
These safety labels are illustrated on page 7, and are shown
here to help familiarize you with the location and content
6
Owner’s Manual
212CC VIPER 4-CYCLE ENGINE
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of the safety messages you will see as you perform normal
operations. Please, review these decals now, and if you have
any questions regarding their meaning or how to comply
with these instructions reread the complete safety instruction
text in this manual. For additional questions contact Ardisam
Customer Service.
CONTROL AND OPERATING SYMBOLS
Pictured below are control and operating symbols on the unit
or in this manual. Before you operate your unit, learn and
understand the purpose for each symbol.
Choke
On/O Fuel Shuto
HAZARD SYMBOLS AND MEANINGS
A: Warning!
B: Avoid Injury From Rotating Tines.
C: Read Owner’s Manual Before Operating Machine.
D: Remove Objects that Could Be Thrown By This Machine.
E: Dangerous Moving Parts.
F: Be Aware of Moving and Rotating Parts.
G: Wear Ear and Eye Protection At All Times.
H: Do Not Service or Adjust Moving Parts Unless Engine is
Stopped and Spark Plug Wire is Disconnected.
I: Dress Appropriately And Wear Sturdy Footwear.
J: Toxic Fumes —Do Not Operate in Unventilated Areas.
K: Hot Surfaces.
L: Fire Hazards.
M. Do Not Use In Thunderstorms--For severe weather, stop
operation of this machine and seek shelter.
N. Team Lift--For your safety, always have at least two people
when lifting this machine.
O. Do Not Till Above Underground Utility Lines And Pipes.
P. Do Not Operate When Children Or Others Are Around.
A B
C
D
E
F
G
H
I J
K L
M
N
O
P
7
Owner’s Manual
212CC VIPER 4-CYCLE ENGINE
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SPECIFICATIONS
Model 24129 25145 / 31776
Displacement/Cycle 212cc; 4-Stroke 212cc; 4-Stroke
Ignition Type Electronic ignition Electronic ignition
Cooling System Forced air cooling Forced air cooling
Idling Carburetor Adjust 1900 +/- 100 RPM 1600 +/- 160 RPM
Valve Clearance Cold engine-Intake: 0.05 +/- 0.01 mm;
Exhaust: 0.05 +/- 0.01 mm
Cold engine-Intake: 0.15 +/- 0.02 mm;
Exhaust: 0.20 +/- 0.02 mm
Maximum Torque 8.85 ft-lb @ 2500 RPM 8.85 ft-lb @ 2500 RPM
Bore and Stroke 70 x 55 mm 70 x 55 mm
Spark Plug Type Torch F6TC, NGK: BP6ES Torch F6RTC
Recommended Fuel Type Minimum 87 octane gasoline with NO
ethanol content.
NOTE: If using an ethanol blended fuel, a fuel
stabilizer, mixed to manufacturer specications, is
recommended. DO NOT use E85 ethanol blend fuels.
Minimum 87 octane gasoline with NO
ethanol content.
NOTE: If using an ethanol blended fuel, a fuel
stabilizer, mixed to manufacturer specications, is
recommended. DO NOT use E85 ethanol blend fuels.
Fuel Tank Capacity 0.74 gallon (2.8 liters) 0.95 gallon (3.6 liters)
Drive Shaft Type Horizontal, 1” straight, (1/4”) keyed shaft with ball
bearings. Direction: counterclockwise (facing shaft);
Length: 3-1/5”; Central Thread: 3/8”-24UNF
Horizontal, 3/4” straight, (3/16”) keyed shaft with ball
bearings. Direction: counterclockwise (facing shaft);
Length: 2-1/4”; Central Thread: 5/16”-24
Start Type Recoil Recoil
Speed 3800 RPM 3600 RPM
Oil Capacity and Type ~0.53 qt / 16.9 oz (0.5 liters); SAE 15W40 (in freezing
weather use 5W30)
~0.63 qt / 20.2 oz (0.6 liters); SAE 10W30 (in freezing
weather use 5W30)
Weight 37.5 lb (17 kg) 37.5 lb (17 kg)
Overall Dimensions 390 mm x 320 mm x 345 mm 390 mm x 320 mm x 345 mm
8
Owner’s Manual
212CC VIPER 4-CYCLE ENGINE
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FEATURES
ENGINE COMPONENTS
This is a 4-cycle air-cooled engine. The 212cc engine utilizes a horizontal shaft and an oil slinger lubricated system.
24129 shown below 31776 shown below
MUFFLER
THROTTLE
CHOKE
START
HANDLE
RECOIL
EXHAUST
OUTLET
SPARK PLUG
CARBURETOR
FUEL CAP
FUEL TANK
OIL FILL
PTO SHAFT
OIL DRAIN
PLUG
AIR CLEANER
ON/OFF
SWITCH
ENGINE SERIAL
NUMBER
FUEL SHUT
OFF SWITCH
FUEL CUP
MUFFLER
PULL
HANDLE
STARTER
RECOIL
FUEL SHUT
OFF SWITCH
CARBURETOR
& FUEL BOWL
SPARK
PLUG
EXHAUST
OUTLET
AIR
CLEANER
THROTTLE
CONTROL
CHOKE
CONTROL
FUEL
TANK
FUEL
CAP
PTO
SHAFT
OIL DRAIN
PLUG
OIL FILL
PORTS
ENGINE SERIAL
NUMBER DECAL
9
Owner’s Manual
212CC VIPER 4-CYCLE ENGINE
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OPERATION
PREOPERATION INSPECTION
1. Check that engine is lled with the proper amount and
type of oil. For the most appropriate type of oil to use,
see “Choosing Oil Type” chart on page 10.
2. Check that the engine has the appropriate amount of fuel.
3. Examine underneath and around engine for signs of oil or
fuel leaks.
4. Inspect fuel hoses and connections for tightness and fuel.
5. Look for signs of engine damage.
6. Check that all guards and shields are in place, and all
screws, nuts and bolts are tightened.
7. Eliminate excessive debris around muer and recoil starter.
8. Be sure air lter and cylinder ns are clean and free of
debris.
WARNING
DO NOT ATTEMPT TO START ENGINE IN THE FOLLOWING
WAYS:
• DO NOT USE STARTING FLUID.
• DO NOT SPRAY FLAMMABLE LIQUIDS OR VAPORS INTO
AIR CLEANER, CARBURETOR OR SPARK PLUG CHAMBER.
• DO NOT REMOVE SPARK PLUG AND PULL ON STARTER
ROPE. FLAMMABLE FUEL CAN SPRAY OUT AND IGNITE
FROM A SPARK FROM SPARK PLUG.
DO NOT REFUEL WHILE SMOKING, NEAR OPEN FLAME,
OR OTHER POTENTIAL HAZARDS.
FUEL IS HIGHLY FLAMMABLE AND MUST BE HANDLED
WITH CARE. NEVER FILL THE TANK WHEN THE ENGINE IS
HOT OR RUNNING. ALWAYS MOVE OUTDOORS TO FILL
TANK.
ALWAYS PERFORM A PREOPERATION INSPECTION BEFORE
EACH OPERATION AND CORRECT ANY PROBLEM.
IMPROPER MAINTENANCE OF THIS ENGINE, OR FAILURE
TO CORRECT A PROBLEM BEFORE OPERATION, CAN CAUSE
A MALFUNCTION.
SERIOUS INJURY OR DEATH CAN OCCUR IF THIS WARNING
IS NOT COMPLIED WITH.
9. Check the equipment powered by this engine. Review the
operator’s manual provide with the equipment powered
by this engine for any safety and warning precautions
and/or procedures that should be followed before starting
this engine.
CHECKING AND FILLING THE FUEL TANK
Be sure the engine is located on a level surface before check-
ing or relling fuel. Use unleaded regular, unleaded premium
automotive fuels only. Low/no ethanol blends recommended.
Fuel may contain up to 10% ethanol. DO NOT mix oil with
fuel.
NOTE: If using ethanol blends, it is recommended you also use
an ethanol fuel treatment to protect against corrosion. Do Not
use E85 fuel.
1. Make sure engine is cool and not running while lling.
2. Remove fuel cap.
3. Fill tank to fuel level limit. SEE FIGURE 1.
Note: Do not overll. Leave room for fuel expansion.
4. Replace cap and remove any spilled fuel before operating.
MAXIMUM FUEL
FILL LEVEL
FIGURE 1
10
Owner’s Manual
212CC VIPER 4-CYCLE ENGINE
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CHECKING AND ADDING OIL
Be sure the engine is located on a level surface before check-
ing or relling oil.
1. Clean around oil ll area and drain plug. SEE FIGURE 2.
2. Unscrew dipstick and wipe clean with cloth. SEE FIGURE 2.
3. Reinsert and tighten dipstick.
4. Slide out dipstick and check oil.
5. If oil level is below the marking on the oil dipstick, rell to
upper level. SEE FIGURE 2.
6. Change oil if contaminated.
NOTE: Viper engine oil may be put through the oil dipstick hole
or through the oil ll plug opening. If an oil plug is present,
loosen screw and ll oil until oil level is even with top thread in
plug hole.
CHOOSING OIL TYPE
30
10W-30
5W-30
-20 0 20 40 60 80 100 °F
-30 -20 -10 0 10 20 30 40 °C
Environment Temperature
SAE
WARNING
ENGINE IS SHIPPED FROM FACTORY WITHOUT OIL. YOU
MUST ADD ENGINE OIL BEFORE STARTING ENGINE.
ENGINE OIL IS HAZARDOUS TO YOUR HEALTH. DISPOSE
OF OIL APPROPRIATELY. USE A SAFE DISPOSAL/RECYCLING
CENTER.
• ALWAYS PERFORM A PREOPERATION INSPECTION
BEFORE EACH OPERATION AND CORRECT ANY PROBLEM.
• IMPROPER MAINTENANCE OF THIS ENGINE, OR FAILURE
TO CORRECT A PROBLEM BEFORE OPERATION, CAN
CAUSE A MALFUNCTION.
• SERIOUS INJURY OR DEATH CAN OCCUR IF THIS WARNING
IS NOT COMPLIED WITH.
FIGURE 2
OIL FILL PORT
& DIPSTICK
OIL DRAIN PLUG
LOWER OIL LEVEL
UPPER OIL LEVEL
WARNING
IMPROPER MAINTENANCE, OR FAILURE TO CORRECT A
PROBLEM BEFORE OPERATION CAN CAUSE A
MALFUNCTION. ALWAYS FOLLOW THE INSPECTION AND
MAINTENANCE RECOMMENDATIONS AND SCHEDULES IN
THIS OPERATOR’S MANUAL.
CHECK ENGINE REGULARLY FOR LOOSE NUTS AND BOLTS.
KEEP THESE ITEMS TIGHTENED.
TEMPERATURE OF MUFFLER AND NEARBY AREAS MAY
EXCEED 150° F 65° C. AVOID THESE AREAS.
PREVENT ACCIDENTAL STARTING:
• ENGINE MUST BE TURNED OFF AND COOL.
• SPARK PLUG WIRE MUST BE REMOVED FROM SPARK.
PLUG BEFORE CHECKING AND ADJUSTING ENGINE OR
EQUIPMENT.
11
Owner’s Manual
212CC VIPER 4-CYCLE ENGINE
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WARNING
CARBON MONOXIDE GAS IS TOXIC. MOVE THE ENGINE
TO A WELLVENTILATED AREA OUTDOORS, TO PREVENT
CARBON MONOXIDE POISONING. INHALATION CAN
CAUSE UNCONSCIOUSNESS AND DEATH.
NEVER LEAVE ENGINE RUNNING WHILE UNATTENDED.
MOVE ENGINE TO A WELLVENTILATED AREA, ALWAYS
OUTDOORS, TO PREVENT CARBON MONOXIDE POISONING.
MOVE TO AN AREA AWAY FROM FLAMES OR SPARKS, TO
AVOID IGNITION OF VAPORS IF PRESENT.
NOTICE
OPERATING ENGINE ON ANGLES GREATER THAN 25
DEGREES WILL CAUSE THE ENGINE TO LOSE LUBRICATION
AND SEIZE.
STARTING AND STOPPING THE ENGINE
Review “safety and warning precautions” and “pre-operation
inspection” sections before starting engine.
ENGINE START
1. Move the fuel valve switch to the ON position.
2. Move the engine to a well-ventilated area, always outdoors,
to prevent carbon monoxide poisoning.
3. Move to an area away from ames or sparks, to avoid ignition
of vapors if present.
4. Remove all debris from air cleaner holes and cooling ns to
ensure proper air ow.
5. Move throttle lever 1/2 way between the FULL and LOW
THROTTLE positions. (This is not necessary on models with
throttle xed at full throttle position.) SEE FIGURES 3 AND 4.
NOTE: FULL THROTTLE position is when the throttle lever is
all the way to the left and LOW THROTTLE position is when
the throttle lever is all the way to the right.
6. Move the choke lever:
• If the engine is cold or the ambient temperature is low, move
choke lever to the FULL CHOKE position. SEE FIGURE 5.
• If the engine is warm or the ambient temperature is high,
move choke lever to the RUN position or 1/2 way between
the FULL CHOKE and RUN positions. SEE FIGURES 6 AND 7.
LOW THROTTLE POSITION
IS ALL THE WAY TO THE RIGHT
THROTTLE
LEVER
FULL THROTTLE POSITION
IS ALL THE WAY TO THE LEFT
FUEL LEVER
ON POSITION
FULL CHOKE
POSITION
HALF CHOKE
POSITION
FIGURE 4
FIGURE 3
FIGURE 6
FIGURE 5
12
Owner’s Manual
212CC VIPER 4-CYCLE ENGINE
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NOTE: RUN position is when the choke lever is all the way to the
left and FULL CHOKE position is when the choke lever is all the
way to the right.
7. Turn the ON/OFF switch to the ON position. SEE FIGURE 8.
8 Grasp starter handle and pull out slowly, until resistance
is felt. Without letting it retract, pull rope with a rapid
stroke. DO NOT pull the rope out all the way. Let it return
to its original position slowly. Repeat this step until engine
starts.
9. After engine begins operating, move choke lever 1/2 way
between the RUN and FULL CHOKE positions. This position
is considered the HALF CHOKE position. SEE FIGURE 6.
10. Run engine for 30 to 45 seconds at HALF CHOKE position
until engine warms up.
11. Once engine is warmed up, slowly move the choke lever
to the RUN position. SEE FIGURE 7.
12. Move throttle lever to desired speed. (This is not necessary
on models with throttle xed at full throttle position.) SEE
FIGURE 3.
NOTE: Middle to Low Throttle is meant for use as the engine
idles and Full Throttle for when the engine is in use.
TO STOP THE ENGINE:
1. Move the throttle lever to the LOW THROTTLE position and
allow the engine to run at low speeds for 1-2 minutes. (This
is not necessary on models with throttle xed at full throttle
position.) SEE FIGURE 4.
2. Turn the ON/OFF switch to the OFF position. SEE FIGURE 9.
3. Move the fuel lever to the OFF position. SEE FIGURE 10.
4. Pull the starter handle slowly and return the handle to its
original position when resistance is felt. This operation will
prevent outside moisture from entering the combustion
chamber.
STOPPING THE ENGINE WITH THE FUEL LEVER:
Move the fuel lever to the OFF position and wait until the
engine stops. Avoid letting fuel remain in the carburetor over
long periods, or the passages of the carburetor may become
clogged with impurities and malfunction may result.
FIGURE 7
OPEN
CHOKE
(RUN)
POSITION
FUEL LEVER
OFF POSITION
FIGURE 8
FIGURE 10
FIGURE 9
13
Owner’s Manual
212CC VIPER 4-CYCLE ENGINE
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MAINTENANCE AND STORAGE
Please read the maintenance schedule, found in the accompa-
nying combined exhaust and evaporative emissions control
warranty statement, and observe these recommended care
operating intervals to extend the life of your engine.
Good maintenance is essential for safe, economical, and
trouble-free operation. It will also help reduce air pollution. To
help you properly care for your engine, the following pages in-
clude routine inspection procedures and simple maintenance
procedures using basic hand tools. Other service tasks that
are more dicult, or require special tools, are best handled by
professionals and are normally performed by a technician or
other qualied mechanic.
Maintenance, replacement or repair of the emissions con-
trol devices and systems may be performed by any non-
road engine repair establishment or individuals. However,
items must be serviced by an authorized dealer to obtain
"no charge" emissions control warranty service.
ENGINE MAINTENANCE
For daily maintenance checks, review “pre-operation inspec-
tion” section and EPA Emission Warranty Statement (included
with this product).
LUBRICATION
Choose 4-cycle engine oil that meets or surpasses the latest
API service classication SJ or equivalent as labeled on the
oil container. Synthetic oils may be substituted for petro-
leum-based oils in extreme temperatures. For temperatures
higher than 32 ºF, use SAE 30 or SAE 10W-30 motor oil. Use
SAE 5W-30 or SAE 10W if temperatures are below 32 ºF. DO
NOT USE SAE 10W40 MOTOR OIL.
OIL MAINTENANCE
After the rst ve hours of operating a new Viper Engine the
oil should be replaced, and every 50 hours of operating time
thereafter. The oil should be changed every 25 hours if used
under severe conditions, such as in high temperatures or under
heavy loads, otherwise changed weekly. Check oil periodically;
do not overll.
CHANGING OIL
Be sure the engine is not operating and is located on a level
surface before checking or relling oil. Engine should be warm
for easy removal of oil.
1. Detach spark plug cap/wire and move away from spark plug.
SEE FIGURE 11.
FIGURE 11
SPARK PLUG
CAP/WIRE
FIGURE 12
UPPER LEVEL
LOWER LEVEL
OIL FILL
AREA/
DIPSTICK
OIL DRAIN PLUG
2. Remove oil drain plug and empty oil into suitable oil container.
Dispose of oil properly. SEE FIGURE 12.
3. Reinstall drain plug. Remove dipstick (if applicable) or oil ll
cap. SEE FIGURE 12.
4. Fill with appropriate oil to FULL or top line of dipstick;
otherwise to top thread of oil ll hole. SEE FIGURE 12.
NOTE: Oil capacity is 0.63 qt / 20.2 oz. See above, under
lubrication, for correct engine oil grade.
5. Reinsert dipstick or oil ll cap and tighten.
CAUTION
RUNNING ENGINE WITH A LOW OIL LEVEL WILL CAUSE
DAMAGE TO YOUR ENGINE. THIS TYPE OF DAMAGE IS NOT
COVERED UNDER WARRANTY.
14
Owner’s Manual
212CC VIPER 4-CYCLE ENGINE
Get parts online at www.GetEarthquake.com or Call 800-345-6007 M-F 8-5 CST
AIR FILTER
Refer to maintenance schedule for suggestions on when to
service your air lter. Clean lter daily in extremely dusty
conditions.
REMOVING/INSTALLING AIR FILTER. SEE FIGURES 13 AND
14.
1. Remove air cleaner cover.
2. Remove the air lter.
3. Replace with new air lter.
4. Replace air lter cover.
WASH AIR FILTER AS FOLLOWS:
1. Wash in warm water with mild soap until dirt and debris
are removed. Press lter when washing, do not twist.
2. Rinse in warm water until soap and dirt are removed.
3. Dry lter by wrapping in a clean cloth and pressing lter
until it is dry.
4. Oil lter thoroughly with common household lubricating
oil and press out any excess oil.
5. Attach the lter and air lter cover to the engine.
SPARK PLUG
The recommended spark plugs are listed in the Specications
Section on Page 7.
CHECKING AND CHANGING SPARK PLUG
1. Check spark plug every 50 operating hours.
2. Disconnect the spark plug cap, and clean any debris from
around the spark plug area. SEE FIGURE 11.
3. Remove spark plug and replace if any of the following
occur; pitted electrodes, burned electrodes, cracked por-
celain, or deposits around electrodes.
4. After analysis, seat spark plug and tighten with spark plug
wrench to compress the sealing washer. For gaps, see
Specications Section on Page 7.
NOTE: Loose spark plug may overheat and damage engine.
Over tightened spark plug may damage threads in the cylinder
head.
CAUTION
NEVER RUN ENGINE WITHOUT AIR FILTER PROPERLY
INSTALLED. ADDED WEAR AND ENGINE FAILURE MAY
OCCUR IF AIR FILTER IS NOT INSTALLED ON ENGINE.
FIGURE 13
FIGURE 14
AIR FILTER COVER
AIR FILTER
AIR FILTER BASE
AIR FILTER
COVER
AIR FILTER
ELEMENT
AIR FILTER
BASE
15
Owner’s Manual
212CC VIPER 4-CYCLE ENGINE
Get parts online at www.GetEarthquake.com or Call 800-345-6007 M-F 8-5 CST
SPARK PLUG MAINTENANCE
Spark plug should be removed, cleaned and gap adjusted after
approximately fty hours of operating time.
NOTE: A sand blaster should not be used to clean spark plugs.
Microscopic particles remaining in the plug may score the engine
cylinder during operation. Use solvent and a wire brush to clean
the plug and compressed air to blow it out thoroughly.
CARBURETOR
• Never tamper with factory setting of the carburetor.
• If adjustment is needed, contact customer service.
FUEL FILTER
CLEAN OR REPLACE FUEL FILTER AS FOLLOWS:
1. Disconnect spark plug wire from spark plug. Remove
spark plug and protect spark plug hole from debris.
2. Drain fuel from tank before attempting to clean/replace
lter.
3. Remove two nuts holding muer to the engine and
remove muer.
4. Remove single tank bolt from fuel tank assembly.
5. Remove two nuts from underside of tank.
6. Gently lift tank o of the engine and disconnect the fuel
line hose clamp. SEE FIGURES 15 AND 16.
7. Remove fuel tank lter by using proper size socket to turn
lter counter clockwise. SEE FIGURE 17.
8. Filter may be washed with kerosene or similar solvent.
9. If lter is extremely dirty or torn replace with new lter.
10. Reassemble and ll with clean fresh gasoline. Check for
leaks prior to starting engine.
FIGURE 16
FIGURE 15
FIGURE 17
FUEL PIPE HOSE
CLAMP
FUEL HOSE
FUEL FILTER
16
Owner’s Manual
212CC VIPER 4-CYCLE ENGINE
Get parts online at www.GetEarthquake.com or Call 800-345-6007 M-F 8-5 CST
WARNING
FUEL IS HIGHLY FLAMMABLE AND MUST BE HANDLED
WITH CARE. NEVER FILL OR DRAIN THE FUEL TANK WHEN
THE ENGINE IS HOT OR RUNNING. ALWAYS MOVE
OUTDOORS TO FILL OR DRAIN FUEL FROM THE TANK.
DO NOT REMOVE FUEL WHILE SMOKING, NEAR OPEN
FLAME, OR OTHER POTENTIAL HAZARDS.
FUEL IS TOXIC. DO NOT SIPHON FUEL BY MOUTH.
DO NOT STORE ENGINE INSIDE A BUILDING WITH FUEL IN
THE TANK. POTENTIAL SPARKS MAY BE PRESENT CAUSING
IGNITION OF FUEL AND FUEL VAPORS.
FAILURE TO FOLLOW SAFETY INSTRUCTIONS CAN CAUSE
SERIOUS INJURY OR DEATH.
DO NOT REMOVE FUEL WHILE SMOKING, NEAR OPEN
FLAME, OR OTHER POTENTIAL HAZARDS.
CHECK ENGINE REGULARLY FOR LOOSE NUTS AND BOLTS.
KEEP THESE ITEMS TIGHTENED.
TRANSPORTING ENGINE
1. Shut fuel supply o by moving the fuel lever to the OFF
position. Failure to turn fuel o may cause raw fuel to
enter the crank case contaminating the engine oil and
providing insucient lubrication. SEVERE ENGINE
DAMAGE MAY RESULT.
2. Never transport engine inside an enclosed space or vehicle.
Fuel or fuel vapors may ignite causing serious injury or
death.
3. If fuel is present in the fuel tank remove fuel or transport
with an open vehicle in an upright position.
4. If an enclosed vehicle must be used, remove fuel into an
approved red fuel container. DO NOT siphon by mouth.
5. Run engine or drain to use up the fuel in the carburetor and
fuel tank. Always run engine in a well ventilated area.
6. Wipe away any spilled fuel from engine. Allow to dry.
STEPS FOR LONGTERM STORAGE
1. Mix an appropriate amount of fuel stabilizer, such as
STA-BIL®, to fresh gasoline, in the ratio recommended on
the stabilizer packaging. Run the engine for ve minutes
to distribute the stabilizer mixture throughout the fuel
system. This will prevent gum, varnish and corrosion build
up in your fuel system during long-term storage for up to
12 months.
NOTE: It is recommended that fuel tank is drained and new
fuel stabilizer is added every four months. Starting engine
once a month to help preserve engine is also recommended.
2. Run engine for 10-15 minutes to ensure that the stabilizer
reaches the carburetor.
a. ) Move fuel lever to the OFF position and start engine.
Run until engine runs itself out of any residual fuel left in
fuel cup and fuel lines. (It is normal for the engine to run
two to three minutes before the fuel is completely out of
system.)
3. Store engine in its upright position.
4. Remove all debris from engine.
17
Owner’s Manual
212CC VIPER 4-CYCLE ENGINE
Get parts online at www.GetEarthquake.com or Call 800-345-6007 M-F 8-5 CST
TROUBLESHOOTING AND REPAIR
At Ardisam we build quality and durability into the design
of our products; but no amount of careful design by us, and
careful maintenance by you, can guarantee a repair-free life for
your Viper® Engine. Most repairs will be minor, and easily xed
by following the suggestions in the troubleshooting guide in
this section.
This section will help you pinpoint the causes of common
problems and identify remedies. For more complicated repairs
please contact one of our authorized service centers (nd
these on our website at www.getearthquake.com/Locations/
ServiceCenter) or contact Ardisam Customer Service. Ardisam
will make the necessary repairs or resolution if a service center
is not available. We will always be glad to answer any ques-
tions you have, or help you nd suitable assistance. To order
parts or inquire about warranty, please visit “contact us” on our
website www.getearthquake.com.
ORDERING REPLACEMENT PARTS
Parts can be obtained directly from the factory. To order parts
visit www.getearthquake.com or call 18003456007. Please
include the following information with your order: part num-
bers; part description; quantity; and model number and serial
number.
SPARE PARTS
Only use approved Viper® spares.
TROUBLESHOOTING GUIDE
PROBLEM POSSIBLE CAUSE REMEDY/ACTION
Engine will not start 1. Power switch o 1. Flip switch to ON position
2. Spark plug wire disconnected 2. Connect spark plug wire to spark plug
3. Out of fuel 3. Refuel
4. Spark plug wet, faulty or improperly
gapped
4. Clean, replace or gap spark plug
5. Stale fuel 5. Drain old fuel and replace with fresh.
Use fuel stabilizer as a future preventative
measure.
Engine runs rough, oods during
operation
1. Dirty air lter 1. Replace air lter
2. Carburetor out of adjustment 2. Call factory
Engine is hard to start 1. Stale fuel 1. Drain old fuel and replace with fresh.
Use fuel stabilizer as a future preventative
measure.
2. Spark plug wire loose 2. Make sure spark wire is securely attached
to spark plug
3. Dirty carburetor 3. Clean carburetor, use fuel stabilizer, and
fresh fuel
Engine misses or lacks power 1. Clogged fuel tank or fuel lter 1. Remove and clean
2. Clogged air lter 2. Replace air lter
3. Improper carburetor adjustment 3. Call factory
4. Spark plug dirty, improper gap, or
wrong type
4. Replace spark plug and adjust gap to
.030”
Engine runs, then quits 1. Fuel cap not venting 1. Replace fuel cap
Contact a service provider if above remedies fail.
18
Owner’s Manual
212CC VIPER 4-CYCLE ENGINE
Get parts online at www.GetEarthquake.com or Call 800-345-6007 M-F 8-5 CST
HIGH ALTITUDE OPERATION
Operating an engine with standard air-fuel mixture at altitudes greater than 3,000 feet will result in a fuel-rich operating condition.
This can lead to increased fuel consumption, increased emissions, and the formation of carbon deposits on spark plugs that can
result in diculty starting engine. To ensure compliance with federal emission standards and avoid performance degradation,
engines must be tted with the appropriate altitude kit when operated at altitudes 3,000 feet or greater.
NOTICE:
1. Engines should not be operated at less than 3,000 feet when tted with an altitude kit. Doing so may result in serious damage
to engine.
2. Engines that have been modied with an altitude kit should only be operated at altitudes for which the kit is designed. Failure
to use the appropriate altitude kit at altitudes in excess of 3,000 feet may result in decreased engine performance, increased
fuel consumption and increased engine emissions.
3. Engine operation is not recommended in altitudes greater than 8,000 feet. Doing so will negatively aect engine performance.
4. For more information on obtaining an altitude kit visit www.GetEarthquake.com and reference your Parts Breakdown for accu-
rate part numbers. Installation of altitude kits should be performed by an authorized Viper service center only.
19
Owner’s Manual
212CC VIPER 4-CYCLE ENGINE
Get parts online at www.GetEarthquake.com or Call 800-345-6007 M-F 8-5 CST
NOTES:
ARDISAM, INC.
1160 Eighth Avenue
PO Box 755
Cumberland, WI 54829
Phone: (800) 345-6007
Fax: (715) 822-2124
www.Ardisam.com
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EarthQuake 33968 Engine Manual
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