Operator's Manual
Viper® 99cc 4-Cycle Engine
6
SPECIFICaTIONS
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or call 800-345-6007 M-F 8-5
Fire hazards
Wear eye protection
Shock hazard
Hot surfaces
Toxic fumes
Moving parts
Read manual before operation
Slow
Fast
Fuel
Oil
Choke
On/Off
Fuel Shutoff
SaFETY SYmBOlS
C
G
Operational Control Symbols
The following symbols may be used on your engine to alert you to potential hazards or to give you guidance in operating your en-
gine. Look over them and understand their meanings before operating your engine.
Safety or Hazard Symbols
Hot! Do not touch!
Displacement/Cycle
99cc; 4-Cycle
Ignition Type
Electronic ignition
Cooling System
Forced air cooling
Idling Carburetor Adjust
2000 +/- 100 RPM
Valve Clearance
Cold engine-Intake: 0.10 - 0.15 mm;
Exhaust: 0.15 - 0.20 mm
Maximum Torque
4.7-N.M./2500 RPM (3.32 ft-lb @ 2500 RPM)
Bore and Stroke
56 x 40 mm
Spark Plug Type
~.030” (0.7-0.8 mm gap) Torch/LG E5TC
Gasoline Type
Unleaded
Gasoline Tank Capacity
Approximately .53 gallons (2.0 L)
Drive Shaft Type
16mm, 60.1mm from end of shaft to mounting surface, 4.78 mm x 45 mm full key, drilled
and tapped M6-6H, 25 mm min., full thread
Start Type
Recoil
Speed
3800 RPM
Oil Capacity and Type
0.37 quart (0.35 liters); SAE 30 (in freezing weather use 5W30)
Weight
23.2 lb, dry (10.5 kg, dry)
Overall Dimensions
310 mm x 290 mm x 310 mm
