Viper 24129 Owner's Manual page 15

SPARK PLUG MAINTENANCE
Spark plug should be removed, cleaned and gap adjusted after
approximately fifty hours of operating time.
NOTE: A sand blaster should not be used to clean spark plugs.
Microscopic particles remaining in the plug may score the engine
cylinder during operation. Use solvent and a wire brush to clean
the plug and compressed air to blow it out thoroughly.
CARBURETOR
• Never tamper with factory setting of the carburetor.
• If adjustment is needed, contact customer service.
FUEL FILTER
CLEAN OR REPLACE FUEL FILTER AS FOLLOWS:
1. Disconnect spark plug wire from spark plug. Remove
spark plug and protect spark plug hole from debris.
2. Drain fuel from tank before attempting to clean/replace
filter.
3. Remove two nuts holding muffler to the engine and
remove muffler.
4. Remove single tank bolt from fuel tank assembly.
5. Remove two nuts from underside of tank.
6. Gently lift tank off of the engine and disconnect the fuel
line hose clamp. SEE FIGURES 15 AND 16.
7. Remove fuel tank filter by using proper size socket to turn
filter counter clockwise. SEE FIGURE 17.
8. Filter may be washed with kerosene or similar solvent.
9. If filter is extremely dirty or torn replace with new filter.
10. Reassemble and fill with clean fresh gasoline. Check for
leaks prior to starting engine.
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Owner's Manual
212CC VIPER 4-CYCLE ENGINE
FUEL PIPE HOSE
CLAMP
FIGURE 15
FUEL HOSE
FIGURE 16
FUEL FILTER
FIGURE 17
15