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Maintenance
NOTE: When tipping the unit or emptying the fuel tank
keep the air cleaner side of engine up. Never tip the
mower more than 90 degrees and do not leave the
mower tipped for any length of time. Oil can drain into
the upper part of the engine causing a starting problem.
Engine
Refer to the separate engine manual for all engine
maintenance instructions.
• Maintain engine oil as instructed in the separate
engine manual packed with your unit.
• Service air cleaner every 25 hours under normal
conditions. Poor engine performance and flooding
usually indicate that the air cleaner should be
serviced. To service the air cleaner, refer to the
separate engine manual packed with your unit.
• The spark plug should be cleaned and the gap
reset once a season. Spark plug replacement is
recommended at the start of each mowing season.
Clean the engine regularly with a cloth or brush. Keep
the cooling system (blower housing area) clean to
permit proper air circulation which is essential to engine
performance and life. Be certain to remove all grass,
dirt, and combustible debris from muffler area.
Deck
The underside of the mower deck should be cleaned
after each use to prevent a buildup of grass clippings,
leaves, dirt, or other matter. Ifthis debris isallowed to
accumulate, itwill invite rust and corrosion, and may
prevent proper mulching, discharge, or bagging. The
deck may be cleaned by tiltingthe mower and scraping
clean with a suitable tool (make certain the spark plug
wire isdisconnected).
IMPORTANT: We do not recommend the use of a
pressure washer or garden hose to clean your unit.
CuttingBladeRemoval,Replacement,andSharpening
WARNING: When removing the cutting blade for
sharpening or replacement, protect your hands with a
pair of heavy gloves or use a heavy rag to hold the
blade.
• Remove the bolt and the blade bell support which
hold the blade and the blade adapter to the engine
crankshaft. See Figure 12.
• Remove the blade and the adapter from the
crankshaft.
Blade
Adapter-r-_
Blade Bell
Support
Bolt
Figure 12
WARNING: Periodically inspect the blade
adapter for cracks, especially if you strike a
foreign object. Replace when necessary.
IMPORTANT:When sharpening the blade, followthe
original angle of grind as a guide. It is extremely
important that each cutting edge receives an equal
amount of grinding to prevent an unbalanced blade. An
unbalanced blade will cause excessive vibration when
rotating at high speeds. It may cause damage to the
mower, and could break causing personal injury.
• The blade can be tested by balancing iton a round
shaft screwdriver. Remove metal from the heavy
side until it balances evenly. It is recommended that
the blade always be removed from the adapter
when testing for balance.
• Before reinstalling the blade and the blade adapter
to the unit, lubricate the engine crankshaft and the
inner surface of the blade adapter with light oil.
• Be sure to install the blade with end tips facing up
or the side of the blade marked "Bottom" (or with
part number) facing the ground when the mower is
in the operating position.
• Slide the blade adapter onto the engine crankshaft.
• Place the blade on the adapter. Be certain the
blade is aligned and seated on the blade adapter
flanges.
• Place blade bell support on blade. Make sure the
notches on the blade bell support are aligned with
small holes in the blade.
• Replace hex bolt and tighten hex bolt to torque: 450
in. Ibs. min., 600 in. Ibs. max.
NOTE: To ensure safe operation of your mower, the
blade bolt must be checked periodically for correct
torque.
13
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