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ENGINE CARE
A list of key engine maintenance jobs re-
quired for good performance by the mower
is given below. Follow the accompanying en-
gine manual for a detailed list and instruc-
tions.
• Maintain oil level as instructed in engine
manual.
• Service air cleaner every 25 hours under
normal conditions. Clean every few hours
under extremely dusty conditions. Poor en-
gine performance and flooding usually indi-
cates that the air cleaner should be serviced.
To service the air cleaner, refer to the engine
manual.
• Clean spark plug and reset the gap once
a season. Spark plug replacement is recom-
mended at the start of each mowing season.
Check engine manual for correct plug type
and gap specifications.
• Clean engine regularly with a cloth or
brush. Keep the top of the engine clean to
permit proper air circulation. Remove all
grass, dirt, and combustible debris from muf-
fler area.
• Engines stored between 30 and 90 days
need to be treated with a gasoline stabi-
lizer to prevent deterioration and gum from
forming in fuel system or on essential carbu-
retor parts.
BLADE CARE
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.
Periodically inspect the blade adapter for
cracks, especially if you strike a foreign ob-
ject. 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 fac-
ing up.
2. Remove the bolt
and the blade bell
support which hold
the blade and the
blade adapter to the
engine
crankshaft
(figure 15).
20
3. Remove blade and adapter from the crank-
shaft.
4. Remove blade from the adapter for test-
ing 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 origi-
nal 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 wash-
er, 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.
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 pre-
pare 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 fer-
tilizer.
When storing any type of power equipment
in a poorly ventilated or metal storage shed,
care should be taken to rust-proof the equip-
ment. Using a light oil or silicone, coat the
Fig.15
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