Operator's Manual
Viper® 340cc 4-Cycle Engine
12
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or call 800-345-6007 M-F 8-5
OIL
FILL
DIPSTICK
OIL FILL
PORT
UPPER OIL LEVEL
LOWER OIL LEVEL
OIL
DRAIN
PORT
SPARK PLUG WIRE
Engine Maintenance
For daily maintenance checks, review “Pre-Operation
inspection” section.
Lubrication
Choose engine oil that meets or surpasses the latest API
service classification. Synthetic oils may be substituted
for petroleum-based oils in extreme temperatures. For
temperatures higher than 32º F, use SAE 30, SAE 10W-30, or
SAE 15W-40 motor oil. Use SAE 5W-30 if temperatures are
below 32º F.
Note: See “Choosing Oil Type” in “Operation” section
for more information.
Oil Maintenance
After the first five hours 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 overfill.
Changing Oil
Be sure the engine is not operating and is located on a level
surface before checking or refilling oil. Engine should be
warm for easy removal of oil.
1. Detach spark plug wire. Secure the wire away from the
spark plug. If the engine uses a battery, disconnect at
negative terminal.
SEE FIGURE 4
2. Remove dipstick and carefully tip the engine toward
the dipstick side to empty oil from oil fill area. Empty oil
into a suitable oil container and dispose of oil properly.
SEE FIGURE 5
3. Tip engine back onto a level surface and fill with
appropriate oil to the top of the marking on the dipstick.
4. Reinsert dipstick and tighten.
CAUTION
OIL IS HAZARDOUS WASTE
AVOID INJURY! ENGINE OIL IS HAZARDOUS TO
YOUR HEALTH. DISPOSE OF OIL APPROPRIATELY.
USE A SAFE DISPOSAL/RECYCLING CENTER.
CAUTION
RUNNING ENGINE WITH AN LOW OIL LEVEL WILL
CAUSE DAMAGE TO YOUR ENGINE. THIS TYPE OF
DAMAGE IS NOT COVERED UNDER WARRANTY.
FIGURE 4.
Spark Plug Location
FIGURE 5:
Filling and Changing Oil
