Viper 13350 User manual

Operator's Manual
Original Operating Instructions
Viper® 212cc
4-Cycle Engine
P/N: 13595
ECN: 10842
REV6: 06/22/15
© 2015 ARDISAM, INC.
ALL RIGHTS RESERVED
For more information email
[email protected]om
GAS/OIL
RATIO
50:1
Product #: 13350

Operator's Manual
Viper® 212cc 4-Cycle Engine
For additional information email [email protected] or call 800-345-6007 M-F 8-5
2
INTRODUCTION
Congratulations on your investment in quality. Thank you for purchasing a Viper Engine. We have worked to ensure that your
engine meets the highest standards for usability and durability. With proper care, your engine 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.
CONTENTS
Introduction/Contents/Federal Emissions Information/Registration and Service/Ownership Records......................................................2
Warnings and Safety Precautions........................................................................................................................................................................................... 3
Engine Safety Precautions..................................................................................................................................................................................................... 4-5
Service..............................................................................................................................................................................................................................................5
Hazard Symbols and Meanings/Control and Operating Symbols/Safety Decals/Specications................................................................ 6-7
Features ...........................................................................................................................................................................................................................................7
Operation..................................................................................................................................................................................................................................8-11
Maintenance and Storage................................................................................................................................................................................................ 12-16
Troubleshooting and Repair/Troubleshooting Guide ........................................................................................................................................... 16-17
Illustrated Parts Breakdown............................................................................................................................................................................................. 18-19
Warranty ........................................................................................................................................................................................................................................20
This manual may contain information for several models. 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. This manual should remain with the engine even if it is resold.
OWNERSHIP RECORDS
Owner’s Name:
Owner’s Address:
City: State/Province: Zip Code/Postal Code:
Engine Model Number: Engine Serial Number:
Date of Purchase:
Notes:
REGISTRATION AND SERVICE
Record the engine model number and serial number in the space
provided for easy reference when ordering parts or requesting
technical support. Excluding emissions-related warranty items, the
warranty is valid only if the completed registration is received by
Ardisam within 30 days of purchase. (SEE WARRANTY SECTION FOR
MORE INFORMATION.) You can register your warranty online by
visiting www.ardisam.com, or by mailing it to: Ardisam, Inc., 1160
8th Avenue, Cumberland, WI 54829. If you prefer phone, call our
customer service department at [phone] Mondays through
Fridays from 8 a.m. to 5 p.m. CST.
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).
SERIAL
NUMBER
DECAL

Operator’s Manual
Viper® 212cc 4-Cycle Engine
For additional information email [email protected] or call 800-345-6007 M-F 8-5 3
WARNING
WARNING INDICATES A HAZARD WHICH, IF NOT
AVOIDED, COULD RESULT IN DEATH OR SERIOUS
INJURY AND/OR PROPERTY DAMAGE.
CAUTION
CAUTION INDICATES YOUR EQUIPMENT CAN BE
DAMAGED IF THE SAFETY INSTRUCTIONS THAT
FOLLOW THIS SIGNAL WORD ARE NOT OBEYED.
WARNING
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.
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.
WARNINGS AND SAFETY PRECAUTIONS
Owner’s Responsibility
Accurate assembly and safe and eective 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 Viper® 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
information 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
instructions 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.

Operator's Manual
Viper® 212cc 4-Cycle Engine
For additional information email [email protected] or call 800-345-6007 M-F 8-5
4
WARNING
ENGINES GIVE OFF CARBON MONOXIDE, AN
ODORLESS, COLORLESS, POISONOUS GAS.
CARBON MONOXIDE MAY BE PRESENT EVEN IF
YOUDONOTSMELL ORSEEANYENGINEEXHAUST.
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.
START AND RUN ENGINE OUTDOORS. DO NOT
START OR RUN ENGINE IN ENCLOSED AREA, EVEN
IF DOORS OR WINDOWS ARE OPEN.
HOT GASES ARE A NORMAL BYPRODUCT OF A
FUNCTIONING CATALYTIC CONVERTER. 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
DISCONNECT SPARK PLUG WIRE FROMTHE SPARK
PLUG AND KEEP IT AWAY FROM THE SPARK PLUG.
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 muer
pointed in the direction away from the operator.
• Never point the exhaust muer 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 muer
guard and other hot engine parts.
• Never operate the engine without the muer 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.

Operator’s Manual
Viper® 212cc 4-Cycle Engine
For additional information email [email protected] or call 800-345-6007 M-F 8-5 5
SERVICE
• Always stop the engine whenever you leave the
equipment, 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
engine over or up unless specically 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
necessary.
• To guard against engine over-heating, always have
engine debris lter mounted and clean.
• Inspect engine before storage. When not in use,
disconnect 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.
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
specically 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 relling the engine.
• Do not smoke near or while handling engine fuel.
• Never drain fuel from engine in an enclosed area.
• 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 inuence
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 muer, muer guard and other parts of the
engine become 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 muer guard from the engine.
• Never touch the muer 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 muer
guard and other hot parts of the engine to avoid res.
• This engine is designed to operate using a catalytic
converter which contributes to the engine’s
compliance with the EPA

Operator's Manual
Viper® 212cc 4-Cycle Engine
For additional information email [email protected] or call 800-345-6007 M-F 8-5
6
SPECIFICATIONS
Displacement / Cycle 212 cc / 4-Cycle
Ignition Type Electronic ignition
Cooling System Forced air cooling
Idling Carburetor Adjust 1600 +/- 160 RPM
Valve Clearance Cold engine-Intake: 0.15 +/- 0.02
mm; Exhaust: 0.20 +/- 0.02 mm
Maximum Torque 8.85 ft-lb @ 2500 RPM
Bore and Stroke 70 x 55 mm
Spark Plug Type F6TC, NGK BP6ES
Fuel Type Unleaded gasoline (low/no ethanol
blends recommended)
Fuel Tank Capacity 0.95 gallon (3.6 liters or 121.7 oz)
Drive Shaft Type 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
Maximum RPM 3600 RPM
Oil Capacity and Type ~0.63 qt / 20.2 oz (0.6 liters); SAE
10W30 (in freezing weather use
5W30)
Dry Weight 37.5 lb (17 kg)
Overall Dimensions 15.4” x 12.6” x 13.6” (390mm x
320mm x 345mm)
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.
HAZARD SYMBOLS AND MEANINGS
A B CDEF
GHI J K L
MNOP
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 eectively, 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
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

Operator’s Manual
Viper® 212cc 4-Cycle Engine
For additional information email [email protected] or call 800-345-6007 M-F 8-5 7
FEATURES
This is a 4-cycle air cooled engine. The 212cc engine utilizes a horizontal shaft and an oil slinger lubricated system.
MUFFLER
EXHAUST
OUTLET
SPARK
PLUG
CARBURETOR &
FUEL BOWL
FUEL
SHUT OFF
SWITCH
AIR CLEANER
THROTTLE CONTROL
CHOKE CONTROL
PULL HANDLE
STARTER RECOIL
FUEL CAP
FUEL TANK
ON/OFF SWITCH
ENGINE SERIAL
NUMBER DECAL
OIL DRAIN PLUG
OIL FILL PORTS
PTO
SHAFT
Part No. 13814
WARNING LABEL
Part No. LBL6105OIL
CAUTION LABEL
Part No. 14072
DECAL- Read Owner’s
Manual
Part No. 17918
DECAL-PLACE FREE
HAND HERE

Operator's Manual
Viper® 212cc 4-Cycle Engine
For additional information email [email protected] or call 800-345-6007 M-F 8-5
8
MAXIMUM FUEL
FILL LEVEL
OPERATION
Pre-Operation 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 9.
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
seepage.
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 muer and recoil
starter.
8. Be sure air lter and cylinder ns are clean and free of
debris.
FIGURE 1
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 TANKWHENTHE ENGINE
IS HOT OR RUNNING. ALWAYS MOVE OUTDOORS TO
FILL TANK.
ALWAYS PERFORM A PREOPERATION 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.
WARNING
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
checking or relling 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 treatement to protect against
corrosion.
1. Make sure engine is cool and not running while lling.
2. Remove fuel cap.
3. Fill tank to fuel level limit (3.6L). SEE FIGURE 1
Note: Do not overll.
3. Replace cap and remove any spilled fuel before
operating.

Operator’s Manual
Viper® 212cc 4-Cycle Engine
For additional information email [email protected] or call 800-345-6007 M-F 8-5 9
OIL FILL PORT
& DIPSTICK
OIL DRAIN PLUG LOWER OIL LEVEL
UPPER OIL LEVEL
Checking and Adding Oil
Be sure the engine is located on a level surface before
checking or relling 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. Unscrew and check dipstick. If no oil shows on the
dipstick, rell to the top thread of the oil ll oil.
5. Change oil if contaminated.
NOTE: Viper engine oil may be put in 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.
FIGURE 2
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
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 PREOPERATION
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.
WARNING

Operator's Manual
Viper® 212cc 4-Cycle Engine
For additional information email [email protected] or call 800-345-6007 M-F 8-5
10
STARTING AND STOPPING THE ENGINE
Note: Operating engine on a steep angle will cause the
engine to lose lubrication and seize.
Review “safety and warning precautions” and “pre-operation
inspection”sections before starting engine.
Engine Start
1. Move the fuel valve lever to the ON position.
SEE FIGURE 5
2. Remove all debris from air cleaner holes and cooling ns
to ensure proper air ow.
3. 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
4. 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 HALF CHOKE position
or RUN position. SEE FIGURES 6 AND 7
WARNING
CARBON MONOXIDE GAS IS TOXIC. MOVE
THE ENGINE TO A WELLVENTILATED AREA
OUTDOORS, TO PREVENT CARBON MONOXIDE
POISONING. INHALATION CAN CAUSE
UNCONSCIOUSNESS AND DEATH.
NEVER LEAVE ENGINE RUNNING WHILE
UNATTENDED.
MOVE ENGINE TO A WELLVENTILATED AREA,
ALWAYS OUTDOORS, TO PREVENT CARBON
MONOXIDE POISONING.
MOVE TO AN AREA AWAY FROM FLAMES OR
SPARKS, TO AVOID IGNITION OF VAPORS IF
PRESENT.
CAUTION
DO NOT STOP ENGINE BY MOVING CHOKE
CONTROL TO CHOKE. BACKFIRE, ENGINE
DAMAGE, OR FIRE MAY OCCUR.
HALF CHOKE
POSITION
FIGURE 6
FIGURE 4
LOW THROTTLE POSITION
IS ALL THE WAY TO THE RIGHT
THROTTLE
LEVER
FULL THROTTLE POSITION
IS ALL THE WAY TO THE LEFT
FIGURE 3
FUEL LEVER
ON POSITION
FULL CHOKE
POSITION
FIGURE 5
OPEN
CHOKE
(RUN)
POSITION
FIGURE 7

Operator’s Manual
Viper® 212cc 4-Cycle Engine
For additional information email [email protected] or call 800-345-6007 M-F 8-5 11
7. Turn the On/O 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 out the rope all of the way. Let it
return to its original position very slowly. Repeat this step
until engine starts.
9. After engine begins operating, move choke lever to
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
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/O 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 8
FIGURE 9
FUEL LEVER
OFF POSITION
FIGURE 10

Operator's Manual
Viper® 212cc 4-Cycle Engine
For additional information email [email protected] or call 800-345-6007 M-F 8-5
12
MAINTENANCE AND STORAGE
Please read the maintenance schedule, found in the
accompanying 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 include a routine inspection procedures and simple
maintenance procedures using basic hand tools. Other service
tasks that are more dicult, or require special tools, are best
handled by professionals and are normally performed by a
technician or other qualied mechanic.
Maintenance, replacement or repair of the emissions
control 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
inspection” section.
LUBRICATION
Choose 4-cycle engine oil that meets or surpasses the latest
API service classication. For temperatures higher than 32º F,
use SAE 30 or SAE 10W-30 motor oil. Use SAE 5W-30 or SAE
10W if temperatures are below 32º F. DO NOT USE SAE 10W
40 MOTOR OIL.
See page 9 to reference Choosing Oil Type chart.
Oil Maintenance
After the rst 20 hours, or after the rst month, 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 overll.
Changing Oil
Be sure the engine is not operating and is located on a level
surface before checking or relling 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
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
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.
FAILURE TO FOLLOW THESE WARNINGS CAN RESULT IN
SERIOUS INJURY OR DEATH.
CAUTION
ENGINE IS SHIPPED FROM FACTORY WITHOUT
OIL. YOU MUST ADD ENGINE OIL BEFORE
STARTING ENGINE.
RUNNING ENGINE WITH A LOW OIL LEVEL WILL
CAUSE DAMAGE TO YOUR ENGINE. THIS TYPE OF
DAMAGE IS NOT COVERED UNDER WARRANTY.
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.
WARNING
NEVER RUN YOUR ENGINE IN A POORLY VENTILATED
AREA. THE EXHAUST FROM ENGINE MAY CONTAIN
POISONOUS CARBON MONOXIDE. BREATHING IT
WOULD CAUSE SHOCK, UNCONSCIOUSNESS, AND
EVEN DEATH.

Operator’s Manual
Viper® 212cc 4-Cycle Engine
For additional information email [email protected] or call 800-345-6007 M-F 8-5 13
SPARK PLUG
WIRE/CAP
FIGURE 11
OIL FILL PORT
& DIPSTICK
OIL DRAIN PLUG LOWER OIL LEVEL
UPPER OIL LEVEL
FIGURE 12
ENGINE OIL IS HAZARDOUS TO YOUR HEALTH.
DISPOSE OF OIL APPROPRIATELY. USE A SAFE
DISPOSAL/RECYCLING CENTER.
WARNING

Operator's Manual
Viper® 212cc 4-Cycle Engine
For additional information email [email protected] or call 800-345-6007 M-F 8-5
14
!
AIR FILTER
Refer to maintenance schedule for suggestions on when to
service your air lter. Clean lter daily in extremely dusty
conditions.
Remove/Install Air Filter as follows:
SEE FIGURE 13
1. Remove air cleaner cover.
2. Remove the air lter element.
3. Replace with clean or new air lter element.
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.
5. Attach the lter and air lter cover to the engine.
CAUTION
NEVER RUN ENGINE WITHOUT AIR FILTER
PROPERLY INSTALLED. ADDED WEAR AND
ENGINE FAILURE MAY OCCUR IF AIR FILTER IS NOT
INSTALLED ON ENGINE.
AIR FILTER COVER
AIR FILTER ELEMENT
AIR FILTER BASE
FIGURE 13
SPARK PLUG
The recommended spark plug is a F6TC (NGK BP6ES).
Check and Change Spark Plug as follows:
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 on previous
page.
3. Remove spark plug and replace if any of the following
occur; pitted electrodes, burned electrodes, cracked
porcelain, or deposits around electrodes.
4. After analysis, seat spark plug and tighten with spark
plug wrench to compress the sealing washer. SEE
FIGURE 11 on previous page.
• Reinstall original spark plug, tighten additional 1/2
turn.
• Installing new spark plug, adjust spark plug gap to
0.030” (0.7-0.8 mm) and tighten additional 1/8 – 1/4
turn.
NOTE: Loose spark plug may overheat and damage
engine. Over tightened spark plug may damage
threads in the cylinder head.
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 out completely.

Operator’s Manual
Viper® 212cc 4-Cycle Engine
For additional information email [email protected] or call 800-345-6007 M-F 8-5 15
FUEL LINE HOSE CLAMP
CARBURETOR
• Never tamper with the factory setting of the
carburetor.
• Contact your service provider or Ardisam if
adjustment is needed.
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 muer to the engine and
remove muer.
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 14 and 15.
7. Remove fuel tank lter by using proper size socket to
turn lter counter clockwise. SEE FIGURE 16
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 14
FIGURE 16
FUEL
LINE
FIGURE 15
FUEL FILTER
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. SERIOUS
INJURY OR DEATH CAN OCCUR.
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.

Operator's Manual
Viper® 212cc 4-Cycle Engine
For additional information email [email protected] or call 800-345-6007 M-F 8-5
16
FUEL LEVER
ON POSITION
FULL CHOKE
POSITION
FIGURE 17
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 insucient lubrication. SEVERE ENGINE
DAMAGE MAY RESULT. SEE FIGURES 17 AND 18
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 LONGTERM 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.
WARNING
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.
CHECK ENGINE OFTEN FOR LOOSE NUTS AND
BOLTS. KEEP THESE ITEMS TIGHTENED.
FAILURE TO FOLLOW SAFETY INSTRUCTIONS
CAN CAUSE SERIOUS INJURY OR DEATH.
FUEL LEVER
OFF POSITION
FIGURE 18
3. Store engine in its upright position.
4. Remove all debris from engine.
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, you may want to rely on your
retailer, an authorized service center or Ardisam. Ardisam will
make the necessary repairs if a service center is not available.
A parts breakdown is located toward the end of this manual.
We will always be glad to answer any questions you have, or
help you nd suitable assistance. To order parts or inquire
about warranty, call or e-mail us using the contact information
found in this section.
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.)

Operator’s Manual
Viper® 212cc 4-Cycle Engine
For additional information email [email protected] or call 800-345-6007 M-F 8-5 17
Ordering Replacement Parts
Parts can be obtained from the store where the unit was
purchased or direct from the factory. To order parts call 1-800-
345-6007. For other general questions, you can email us at:
[email protected].
Please include the following information with your order:
1) Part numbers
2) Part description
3) Quantity
4) Model number and serial number
SPARE PARTS
Only use approved Viper®spares. Refer to the Illustrated Parts
Breakdown and parts list.
TROUBLESHOOTING GUIDE
PROBLEM POSSIBLE CAUSE REMEDY/ACTION
Engine will not start 1. Power switch o 1. Flip switch to ON position
2. Fuel valve o 2. Check fuel valve is on
3. Spark plug wire disconnected 3. Connect spark plug wire to spark plug
4. Out of fuel 4. Refuel
5. Spark plug wet, faulty or improperly
gapped
5. Clean, replace or gap spark plug
6. Stale Fuel 6. Drain old fuel and replace with fresh fuel.
Use fuel stabilizer as a future preventative
measure.
Engine runs rough, oods during
operation
1. Dirty air lter 1. Clean or replace air lter
2. Choke partially engaged 2. Turn o choke
3. Carburetor out of adjustment 3. Call factory
Engine is hard to start 1. Stale fuel 1. Drain old fuel and replace with fresh.
Use fuel stabilizer at end of season
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. Clean or replace
3. Improper carburetor adjustment 3. Call factory
4. Spark plug dirty, improper gap, or
wrong type
4. Replace spark plug and adjust gap to
0.030”
Engine runs, then quits 1. Fuel vapor hose not venting 1. Replace fuel vapor hose
Contact Ardisam customer service if above remedies fail.
WARNING
IMPROPER MAINTENANCE, OR FAILURE TO
CORRECT A PROBLEM BEFORE OPERATION
CAN CAUSE A MALFUNCTION. ALWAYS
FOLLOW THE INSPECTION AND MAINTENANCE
RECOMMENDATIONSANDSCHEDULESINCLUDED
WITH 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.
FAILURE TO FOLLOW THESE WARNINGS CAN
RESULT IN SERIOUS INJURY OR DEATH.

Operator's Manual
Viper® 212cc 4-Cycle Engine
For additional information email [email protected] or call 800-345-6007 M-F 8-5
18
ILLUSTRATED PARTS BREAKDOWN  Viper 212cc Engine
9
9,10
5,9,18
7
18
3
8
4
6
5
5
5,18
21
14
15
15,16
17
19
5,19
2
13
5
12
11

Operator’s Manual
Viper® 212cc 4-Cycle Engine
For additional information email [email protected] or call 800-345-6007 M-F 8-5 19
KEY PART # DESCRIPTION QT Y.
1 13831 KIT THROTTLE ASSEMBLY 1
2 67201 CYLINDER HEAD COVER KIT 1
3 67178 RECOIL STARTER ASSEMBLY 1
4 67069 ENGINE STOP SWITCH ASSEMBLY 1
5 67183 CARBURETOR GASKET KIT 1
6 67195 IGNITION MECHANISM KIT 1
7 13829 IGNITION COIL REPL. KIT 1
8 13830 BLOWER HOUSING KIT 1
9 67177 AIR CLEANER ASSEMBLY 1
10 67173 AIR CLEANER FILTER 1
KEY PART # DESCRIPTION QT Y.
11 67031 OIL PLUG KIT 1
12 67038 DIPSTICK 1
13 67012 SPARK PLUG 1
14 67198 FUEL LINE KIT AND CONNECTOR FILTER 1
15 13566 FUEL TANK ASSEMBLY KIT 1
16 13607 FUEL TANK COVER KIT 1
17 13608 FUEL VAPOR HOSE KIT 1
18 13606 CARBURETOR ASSEMBLY 1
19 13609 MUFFLER COMPLETE KIT 1
NOT SHOWN PARTS
 14926 KIT ALTITUDE 3000 TO 6000 FT 
 14927 KIT ALTITUDE 6000 TO 8000 FT 
ILLUSTRATED PARTS BREAKDOWN  Viper 212cc Engine

Operator’s Manual
Viper® 212cc 4-Cycle Engine
For additional information email [email protected] or call 800-345-6007 M-F 8-5 20
Warranty Terms and Conditions
ARDISAM LIMITED 5 YEAR VIPER ENGINE WARRANTY
FOR ENGINES GREATER THAN 79CC’S MANUFACTURED AFTER 10/1/2014
Ardisam, Inc. (Ardisam) warrants this engine under a ve-year limited warranty to be free from defects in the material or
workmanship or both for a period not exceeding sixty consecutive months from the date of original purchase by the rst retail
consumer or rst commercial end user. “Consumer use,” means personal recreational use by a retail consumer. “Commercial use,“
or “commercial application,“ means all other uses, including use for commercial, income producing or rental purposes. Once
a product has experienced commercial use, it shall thereafter be considered as a commercial use product for the purpose of
this warranty. This warranty applies to the original owner that provides a proof of purchase. This warranty is not transferable.
The warranty period begins on the date of purchase by the rst retail consumer or commercial end user, and continues for the
sixty month consecutive period thereafter. Any unit used in a commercial application is covered for a period of 90 days after
purchase by the rst commercial end user. For the warranty to be valid, the product must be registered online within 30 days
of purchase, or the warranty card must be lled out and received by Ardisam within 30 days of purchase. Ardisam shall not be
obligated for transportation charges that result from repair or replacement under the terms of this warranty. Transportation
charges are the sole responsibility of the purchaser.
This warranty excludes parts that are worn or damaged due to normal wear such as spark plugs, recoil ropes, fuel lters, and
bearings. Routine maintenance items such as lter elements, O-rings, seals, lubricants, and tune-ups are also excluded. Natural
fading or peeling from normal deterioration due to weather elements, sea water, and chemicals is also excluded. Non catalytic
muers will be warrantied for one year. For all catalytic muers refer to the emissions control warranty contained in the retail
package.
This limited warranty applies to defects in the material or workmanship of the engine only. This warranty does not apply to
the product to which the engine is mounted. This warranty policy applies only to engines which have not been subjected to
misuse including but not limited to operating engine with insucient, contaminated, or incorrect grade of oil, using gasoline
with ethanol greater than 10%, contaminated gasoline, dirt ingestion due to improper air lter maintenance or improper
installation, improper tension of belts creating excessive force on crankshaft, excessive vibration causing loose hardware,
unbalanced items attached to the crankshaft, uses other than those indicated in the product manual, alteration, accident, use
of unauthorized parts, failure to perform periodic maintenance as specied in engine manual, normal wear and tear, use of
unauthorized parts or repairs performed at unauthorized service centers. Parts applied to the external engine like clutches,
pulleys, belt engagement items are subject to the warranty of the product to which the engine is mounted. Failure resulting
from obstructing airow to the engine such as dirt, grass, rodent nests that cause overheating is excluded. All parts specied in
the “Emissions Control Warranty” contained in the retail package will follow the terms of that agreement and are not included as
part of this warranty. There is no other express warranty. Implied warranties, including those of merchantability and tness for
a particular purpose, are limited to one year from purchase, or to the extent permitted by law. All other implied warranties are
excluded. Liability for incidental or consequential damages are excluded to the extent exclusion is permitted by law. Ardisam
does not assume, and does not authorize any other person to assume for Ardisam, any liability in connection with the sale
of Ardisam products. To be at “No Charge,”warranty work must be sent directly to and performed by Ardisam or an Ardisam
Authorized Warranty Service Facility. To obtain warranty service and/or replacement instructions, contact the Ardisam Customer
Service Department at 800-345-6007. If you choose to ship your product to Ardisam for warranty repair, you must rst have
prior approval from Ardisam by calling the Ardisam Customer Service Department for a return material authorization number
(RMA#). Under these circumstances, all items must be shipped prepaid. Ardisam will, in its discretion, at no charge, repair or
replace any defective part to which this warranty applies. Ardisam retains the right to change models, specications and price
without notice. Ardisam shall not be obligated to ship any repair or replacement product to any location outside of the United
States of America or Canada. Some states and countries do not allow the limitations on how long an implied warranty lasts, or
the exclusion or limitation of incidental or consequential damages, so the above limitation may not apply to you. This warranty
gives you specic legal rights, and you may also have other rights which vary from state to state and country to country.