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MAINTENANCE
19
6. Clean paper filter by tapping it gently on a solid
surface. If the paper filter is too dirty, replace it with a
new one. Dispose of the old filter properly.
7. Insert the foam pre-filter into the air cleaner cover,
then the paper filter.
8. Reinstall air cleaner cover and tighten screws.
Clean/Replace Spark Plug
Check and clean the spark plug every 100 hours of
operation or yearly, whichever comes first.This will help
your engine to start easier and run better.
1. Disconnect the spark plug wire from the spark plug
and place the wire where it cannot contact spark plug.
2. Clean the area around the spark plug.
3. Remove and inspect the spark plug.
4. Replace the spark plug if electrodes are pitted or
burned or the porcelain is cracked. Use a Champion
RC14YC or equivalent plug for replacement.
5. Check electrode gap with wire feeler gauge and set
spark plug gap to 0.030 inch (0.76 mm) if necessary
(Figure 17).
6. Reinstall spark plug.
7. Reconnect spark plug wire to spark plug.
Clean Spark Arrester Screen
The engine exhaust muffler has a spark arrester screen.
Inspect and clean the screen every 100 hours of operation
or once each year, whichever comes first.
If you use your generator on any forest-covered, brush-
covered, or grass-covered unimproved land, it must have a
spark arrester.The spark arrester must be maintained in
good condition by the owner/operator.
Clean and inspect the spark arrester as follows:
1. To remove muffler heat shield from muffler, remove
four screws that connect guard to muffler bracket
(Figure 18).
2. Remove four screws that attach spark arrester screen.
3. Inspect screen and replace if torn, perforated or
otherwise damaged. DO NOT use a defective screen. If
screen is not damaged, clean it with commercial
solvent.
4. Reattach screen and muffler guard.
Figure 17 — Service Spark Plug
Muffler
Spark Arrester
Screen
Heat Shield
• DO NOT touch hot surfaces and avoid hot exhaust gases.
• Allow equipment to cool before touching.
• Keep at least 5 ft. (152 cm) clearance on all sides of generator
including overhead.
• Code of Federal Regulation (CFR) Title 36 Parks, Forests, and
Public Property require equipment powered by an internal
combustion engine to have a spark arrester,maintained in
effective working order, complying to USDA Forest service
standard 5100-1C or later revision.In the State of California a
spark arrester is required under section 4442 of the California
Public resources code. Other states may have similar laws.
Running engines produce heat.Temperature of
muffler and nearby areas can reach or exceed
150°F (65°C).
Severe burns can occur on contact.
Exhaust heat/gases can ignite combustibles,
structures or damage fuel tank causing a fire.
WARNING
Figure 18 — Service Spark Arrester