13
2. Using the coded SmartWheel design (Fig. 14),
compare the tips of the grass blades to the letters
on the wheel. Whichever letter the tips of the
grass blades correspond with is the proper
cutting height.
3. Squeeze mower’s height-of-cut lever toward
wheel and move it to the corresponding letter on
mower housing (Fig. 15). For easier adjustment,
lift housing up so wheel is off ground. Do not
put fingers under housing when lifting.
Ensure pin on height-of-cut lever engages slot in
housing. Adjust all wheels to the same letter
setting.
Note: Front wheels can be adjusted to 1,3 cm
(1/2 inch). Move height-of-cut lever
past “A” and release pin into slot in
housing.
Maintenance
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 AV
OID THE HAZARD
• Pull wire off spark plug before performing
any maintenance or adjustments.
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.
1. Stop engine and pull wire off spark plug
(Fig. 10). Remove key from switch on electric
start model.
2. Remove two (2) knobs securing air cleaner cover
to engine (Fig. 16).
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 pr
e–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.
IMPORTANT: Do not operate engine without
air cleaner element because extreme engine
wear and damage will likely result.
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 pull wire off spark plug
(Fig. 10).
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 0.5 mm (0.020”) (Fig. 17). Install
correctly gapped spark plug and gasket seal.
Tighten plug firmly to 19 Nm (14 ft-lb).
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