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Lubricate
Figure 12
Maintenance
NOTE: When tipping the unit, empty the fuel tank and
keep the spark plug 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, ffthis debris isallowed to
accumulate, it willinvite 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.
Cutting BladeRemoval,Replacement,and Sharpening
• 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 bell washer which hold the
blade-pulley assembly to the engine crankshaft.
See Figure 13. Remove the assembly from the
crankshaft.
• Remove the two bolts and lock nuts from the blade
assembly.
• Remove the blade from the blade adapter and
pulley.
WARNING: Periodically inspect the blade
adapter for cracks, especially if you strike
a foreign object. Replace when necessary,
F:u:: mb,y
Blade m_ _ Lock Nut
Adapter_
Hex Bi, te,iW_s heI;_.._..__
Figure 13
When sharpening the blade, follow the 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 rotatingat 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
untilit balances evenly, it is recommended that the
blade always be removed from the adapter when
testing for balance.
• Before reinstalling the blade-pulley assembly tothe
unit, lubricatethe engine crankshaft and the inner
surface of the blade adapter with light oilor engine
oil.
Also lubricatethe bolt holes, bolt and the inner
surface of the nuts.
• Install the blade adapter on the pulley with the "star"
away from the pulley.
• Place the new blade on the blade adapter with the
side marked bottom (or with part number) facing
away from the adapter.
13
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