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Service
Blade Care
WARNING:
sharpening or replacement, protect your hands with
a pair of heavy gloves or use a heavy rag to hold the
blade.
Periodically inspect the blade adapter for cracks, especially if you
strike a foreign object. Replace when necessary. Follow the steps
below for blade service.
1.
Disconnect spark plug boot from spark plug. Turn mower
on its side making sure that the air filter and the carburetor
are facing up.
2.
Remove the bolt and the blade bell support which hold the
blade and the blade adapter to the engine crankshaft. See
Figure 7-1.
Blade
Adapter
Blade Bell
Support
3.
Remove blade and adapter from the crankshaft. See Figure
7-1.
16
When removing the cutting blade for
Blade
Bolt
Figure 7-1
4.
Remove blade from the adapter for testing balance.
Balance the blade on a round shaft screwdriver to check.
Remove metal from the heavy side until it balances evenly.
When sharpening the blade, follow the original angle of
grind. Grind each cutting edge equally to keep the blade
balanced.
WARNING:
An unbalanced blade will cause
excessive vibration when rotating at high speeds. It
may cause damage to mower and could break
causing personal injury.
5.
Lubricate the engine crankshaft and the inner surface
of the blade adapter with light oil. Slide the blade
adapter (and wave washer, if applicable) onto the engine
crankshaft. Place the blade on the adapter such that the
side of the blade marked "Bottom" (or with part number)
faces the ground when the mower is in the operating
position. Make sure that the blade is aligned and seated on
the blade adapter flanges. See Figure 7-1 inset.
6.
Place blade bell support on the blade. Align notches on the
blade bell support with small holes in blade.
7.
Replace hex bolt and tighten hex bolt to torque: 450 in. lbs.
min., 600 in. lbs. max.
To ensure safe operation of your mower, periodically check the
blade bolt for correct torque.
Off-Season Storage
The following steps should be taken to prepare your lawn mower
for storage.
•
Clean and lubricate mower thoroughly as described in the
lubrication instructions.
•
Coat mower's cutting blade with chassis grease to prevent
rusting.
•
Refer to engine manual for correct engine storage
instructions.
•
Do not use a pressure washer or garden hose to clean your
unit.
•
Store mower in a dry, clean area. Do not store next to
corrosive materials, such as fertilizer.
When storing any type of power equipment in a poorly
ventilated or metal storage shed, care should be taken to
rust-proof the equipment. Using a light oil or silicone, coat the
equipment, especially cables and all moving parts of your lawn
mower before storage.
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