Engine Manual

Operator’s Manual
Viper® 173cc 4-Cycle Engine
7
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FEATURES
WARNING
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 THE TANK.
CAUTION
ENGINE IS SHIPPED FROM FACTORY WITHOUT OIL.
YOU MUST ADD ENGINE OIL BEFORE STARTING EN
GINE. IF ENGINE IS STARTED WITHOUT OIL, ENGINE
MAY BE DAMAGED BEYOND REPAIR AND WILL NOT BE
COVERED BY WARRANTY.
muer
fuel cap
air cleaner
start handle
throttle
linkage
primer bulb
ENGINE COMPONENTS
MODEL 186000 173CC VERTICAL SHAFT
This is a 4-cycle air cooled engine. The 173cc engine utilizes a vertical
shaft and an oil slinger lubricated system.
spark plug
oil ll