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CAUTION
POTENTIAL HAZARD
When wire is on spark plug, someone could
accidentally start the engine.
WHAT CAN HAPPEN
Accidental starting of engine could cause
serious injury to operator or bystanders.
HOW TO AVOID THE HAZARD
Pull wire off spark plug before you do any
maintenance. ALso push wire aside so it does
not accidentally contact spark plug.
Servicing Air Cleaner
Normally, clean air cleaner pre-cleaner after every 25
operating hours or every season. Clean the paper cartridge
after every 100 hours or every season. More frequent
cleaning is required when mower is operated in dusty or
dirty conditions. Replace air cleaner parts, if very dirty.
IMPORTANT: Do not operate engine without air filter
elements; extreme engine wear or damage will occur.
Note: Tipping mower on wrong side to service underside
of mower may cause damage to air filters.
1. Stop engine and pull wire off spark plug (Fig. 9).
2. Loosen two (2) knobs securing air cleaner cover to
engine (Fig. 17).
Ï Ï Ï Ï
Ï Ï Ï Ï
Ï Ï Ï Ï
3
Figure 17
1. Knob
2. Cover
3. Lift cover off. Clean cover thoroughly.
1
2
4
m–3664
3. Foam pre-cleaner
4. Paper cartridge
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. 9).
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. 18). Install
correctly gapped spark plug and gasket seal. Tighten
plug firmly to 14 ft–lb (19 N m).
1. .020 in. (0.5 mm)
Draining Gasoline
1. Stop engine and wait for engine to cool. Pull wire off
spark plug (Fig. 9).
Note: Drain gasoline from a cold engine only.
13
1
Figure 18
110
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