Operator's Manual
Viper Engine, 159cc
Check for parts online at www.ardisam.com or call 800-345-6007 M-F 8-5
21
TECHNICAL & CONSUMER INFORMATION
SERIAL NUMBER LOCATION
Record the engine serial number in the space below.
You will need this serial number when ordering parts,
and when making technical or warranty inquires.
Engine serial number: ______________________
MAINTENANCE
Follow the maintenance schedule. Remember that this
schedule is based on the assumption that your machine
will be used for its designed purpose. Sustained high-
load or high-temperature operation, or use in unusually
wet or dusty conditions, will require more frequent
service.
ENGINE TUNEUP
ITEM SPECIFICATION
Spark plug gap 0.028-0.031 in.
(0.70-0.80 mm)
Valve clearance IN: 0.10+ 0.02 mm (cold)
Other specications No other adjustments
needed
Serial number
location
Engine Oil Type SAE 10W-30, API SE
or SF, for general
use
Capacity .055L (0.146 US Gal.)
Spark plug Type F7RTC or other
equivalent
Gap 0.028-0.031 inches
(0.7-0.8 MM)
Carburetor Idle speed 1800 + 150 RPM
Mainte-
nance
Each use Check engine oil;
check air lter
First 5 hours Change engine oil
Subsequent Refer to mainte-
nance schedule
QUICK REFERENCE INFORMATION
Model 60005072/31337
Type Single cylinder, four-stroke,
forced air cooling, OHV
Rated Power (kw/
3600rpm)
3.7
Max torque 8.8/2500
Fuel consumption
(g/kW•h)
<395
Idle speed 1800+150
Bore x Stroke (mm)
65x48
Displacement (cc)
159
Compression ration
8:1
Lubricating mode Splash
Starting mode
Recoil start
Rotation Counter-clockwise (from
P.T.O side)
Valve clearance Input valve: 0.10+0.02 mm,
output valve: 0.15
+0.02 mm
Spark plug
clearance
0.7~0.8mm
Igniting mode Transistorized magneto
ignition
Air cleaner Semi-dry, oil bath,
foam lter
Dimension
(LxWxH)
430x380x380
Net weight (kg)
12
ENGINE SPECIFICATIONS
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