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3
Figure 15
1. Knob
2. Cover
3. Lift cover off. Clean cover thoroughly.
4. Carefully remove pre-cleaner. If pre-cleaner is dirty,
carefully wash it in a solution of liquid soap and warm
water. Rinse in clear water. Allow to dry thoroughly
before using.
5. If paper cartridge is dirty, clean the paper filter by
tapping it gently on a flat surface. If very dirty, replace
cartridge.
IMPORTANT: Do not oil pre–cleaner or paper
cartridge. Do not use pressurized air to clean paper
cartridge.
6. Reinstall pre-cleaner over paper cartridge. Reinstall air
cleaner cover and tighten securely in place with two
(2) knobs.
Replacing Spark Plug
Remove plug after every 25 operating hours and check its
condition. Replace spark plug every 100 operating hours
or every season. Use a Champion RC12YC spark plug or
equivalent.
1. Stop engine and wait for all moving parts to stop. Pull
wire off spark plug (Fig. 11).
1
2
4
m–3664
3. Foam pre–cleaner
4. Paper cartridge
15
2. Clean around spark plug and remove plug from
cylinder head.
IMPORTANT: Replace a cracked, fouled, or dirty
spark plug. Do not sand blast, scrape, or clean
electrodes because engine damage could result from
grit entering cylinder.
3. Set air gap at 0.020" (0.5 mm) (Fig. 16). Install
correctly gapped spark plug and gasket seal. Tighten
plug firmly to 14 ft–lb (19 N m).
Figure 16
Draining Gasoline
1. Stop engine and wait for engine to cool. Pull wire off
spark plug (Fig. 11).
Note: Drain gasoline from a cold engine only.
2. Remove cap from fuel tank and use pump–type syphon
to drain fuel into clean gas can.
Note: This is the only procedure recommended for
draining fuel.
Changing Crankcase Oil
Change oil after the first 5 operating hours and then after
every 50 hours or every season. Change oil while engine
is warm.
Note: Change oil every 25 hours when operating under
heavy load or in high temperatures.
1. Stop engine and wait for all moving parts to stop. Pull
wire off spark plug (Fig. 11).
2. Remove grass bag. Drain gasoline from fuel tank: refer
to Draining Gasoline, page 15.
3. Remove dipstick from oil fill tube and place a drain
pan next to left side of mower.
m-110
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