Engine Manual

Operator's Manual
Viper® 173cc 4-Cycle Engine
6
SPECIFICATIONS
For additional information, email [e-mail] or call 800-345-6007 M-F 8-5
Displacement / Cycle 173cc / 4-Cycle
Ignition Type Electronic ignition
Cooling System Forced air cooling
Idling Carburetor Adjust 1900 +/- 100 RPM
Valve Clearance Cold engine-Intake: 0.15 +/- 0.02
mm;
Exhaust: 0.20 +/- 0.02 mm
Maximum Torque 9.0Nm@2500 RPM (6.64 ft. lbs.)
Bore and Stroke 70 mm x 45 mm
Spark Plug Type / Gap DK7RTC / ~.030” (0.7-0.8 mm gap)
Fuel Type Minimum 87 octane gasoline with
NO ethanol content
NOTE: If using an ethanol blended
fuel, a fuel stabilizer, mixed to
manufacturer specications, is
recommended
Fuel Tank Capacity Approximately .3 gallons (1.1 L)
Drive Shaft Type 22.2mm, 55mm from end of shaft
to mounting surface, 4mm x 26mm
full key, drilled and tapped 3/8-24
UNF-23 mm min., full thread
Start Type Recoil
Speed 3600 RPM
Oil Capacity and Type 0.63 quart (0.6 liters); SAE 30 (in
freezing weather use 5W30)
Weight 31 lb, dry (14.1 kg, dry)
Overall Dimensions 396 mm x 355 mm x 339 mm
SAFETY SYMBOLS
The following symbols may be used on your engine to alert you to potential hazards or to give you guidance in operating your
engine. Look over them and understand their meanings before operating your engine.
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
C
D
E
F
G
H
I J
K L
M
N
O
P
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
CONTROL AND OPERATING SYMBOLS