MAINTENANCE
Check every 50 hours of operation (refer to Fig. 14 - Recommended Maintenance Schedule).
Routine maintenance of the air filter helps maintain proper airflow to the carburetor. Occasionally check that
the air filter is free of excessive dirt. Clean air filter more frequently in dirty or dusty conditions
AIR FILTER MAINTENANCE
To inspect and clean the air filter:
1. Remove the air filter cover (Fig. 18) by undoing the clasps at the
top and bottom of the air filter cover.
2. Remove the sponge-like air filter element from the casing.
Wipe excessive oil and any dirt from inside of the air filter casing.
3. Check and clean the foam air filter element. Good elements can
be washed in soapy water. Dry the element in clean cloth (do not
twist it). A small amount of oil left in the element is normal and
necessary for the engine to work properly.
If the air filter element has been damaged, replace it with a new
one. Replacement air filters can be ordered from wenproducts.com by searching part no. DF1100-175.1.
4. Reinstall the air filter element and air filter cover.
Fig. 18
Air Cleaner Cover
WARNING: Running the engine with a dirty, damaged or missing air filter element can result in
danger to the operator and cause the engine to wear out prematurely.
28
Inspect and clean the spark arrestor every 100 hours of operation.
The spark arrester is located outside the muffler, which gets very hot during operation. Allow the engine to
cool completely before servicing the spark arrester. To inspect and clean the spark arrester:
SPARK ARRESTOR MAINTENANCE
1. Remove the screws holding the cover plate which retains the
end of the spark arrester to the muffler (Fig. 19).
2. Remove the spark arrester screen.
3. Carefully clean and remove the carbon deposits from the spark
arrestor screen with a wire brush. Replace the spark arrestor if it
is damaged.
4. Reinstall the spark arrestor in the muffler and secure it in place
with the screws.
Fig. 19
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