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approximately every five hours of operation and before each usage. Stop engine and wait several minutes before checking oil level. With engine level, the oil must be to the FULL mark on dipstick (refer to figure 11). Change engine oil after the first five hours of operation, and every
Retainer | Cover | ,ase |
| Slot | |
|
|
To Drain Oil:
•Drain oil while engine is warm,
a, Remove oil drain plug. Catch oil in a suitable container.
b.When engine is drained of all oil, replace drain plug securely.
•Refill with fresh oil. Refer to GAS AND OIL FILL- UP section.
•Replace dipstick.
AIR CLEANER
The air cleaner prevents damaging dirt, dust, etc., from entering the carburetor and being forced into the
engine and is important to engine life and per- formance.
Never run your engine without air cleaner com- pletely assembled.
To Service Air Cleaner:
Service
•Loosen air cleaner cover screws. Remove cover and air cleaner assembly from base. See figure 15.
•Remove air cleaner assembly from inside cover and disassemble.
•To service foam
•To service cartridge: Clean by tapping gently on a flat surface, tf very dirty, replace. Do not oi! cartridge.
NOTE: Do not use petroleum solvents (e.g. kerosene) or pressurized air to clean cartridge. They will cause cartridge to deteriorate.
•Reassemble retainer on
•Insert tabs on cover into slots in base and tighten cover screws securely.
Cover
Screws
FIGURE 15.
CLEAN ENGINE
Clean engine periodically. Remove dirt and debris
with a cloth or brush. Cleaning with a forceful spray of water is not recommended as water could contami-
nate the fuel system.
Yearly or every 25 hours, whichever occurs first, remove the blower housing and clean the areas shown in figure 16 to avoid overspeeding, overheating and engine damage. Clean more often if necessary.
WARNING: PERIODICALLY CLEAN MUF-
FLERDIRT ANDAREACOMBUSTIBLETO REMOVE DEBRISALL GRASS,.
Clean Out
and
Dirt
FIGURE 16.
SPARK PLUG
The spark plug should be cleaned and the gap reset to .030" at least once a season or every 50 hours of operation. See figure 17. Spark plug replacement is recommended at the start of each season. Refer to engine parts list for correct spark plug type.
NOTE: Do not sandblast spark plug. Spark plug should be cleaned by scraping or wire brushing and washing with a commercial solvent.
.030" Feeler Gauge
Spark Plug
FIGURE 17.
14