Viper 163cc - Engine Maintenance Procedures; Oil Maintenance and Changing; Engine Oil Hazard and Low Level Cautions

Operator's Manual
Viper® 163cc 4-Cycle Engine
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ENGINE MAINTENANCE
For daily maintenance checks, review “pre-operation inspection”
section.
Lubrication
Choose engine oil that meets or surpasses the latest API service
classication. Synthetic oils may be substituted for petroleum-
based oils in extreme temperatures. For temperatures higher
than 32º F, use SAE 30 or SAE 10W-30 motor oil. Use SAE 5W-30
or SAE 10W if temperatures are below 32º F. DO NOT USE SAE
10W40 MOTOR OIL.
Note: See “Choosing Oil Type” in “Operation” section for
more information.
Oil Maintenance
After the rst ve 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 overll.
Changing Oil
Be sure the engine is not operating and is located on a level
surface before checking or relling oil. Engine should be warm
for easy removal of oil.
1. Detach spark plug wire and move away from spark plug. If
the engine uses a battery, disconnect at negative terminal.
SEE FIGURE 5.
2. Remove dipstick and carefully tip the engine toward the
dipstick side to empty oil from oil ll area. Empty oil into a
suitable oil container and dispose of oil properly. SEE FIGURE
6.
3. Tip engine back onto a level surface and ll with appropriate
oil to the top of the marking on the dipstick. SEE FIGURE 6.
4. Reinsert dipstick and tighten. SEE FIGURE 6.
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 5: Spark plug location
spark plug cap
upper level
lower level
Figure 6: Filling and changing oil
dipstick
oil ll area