Craftsman 247.889210 Operator's Manual page 17

21 self propelled mower
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adjUStinG ShiFt lever Cable
Periodic adjustment of the six speed shift cable may be necessary due
to normal wear on the cable. Adjustment is needed if all six speeds do
not work. The adjustable cable bracket is located on the left side of the
mower beside the engine. See Figure 18.
1.
Start engine and place shift lever in the sixth speed position.
2.
Stop engine and disconnect spark plug wire and ground it against
engine.
3.
Loosen hex nut which secures the adjustable cable bracket. See
Figure 18.
4.
Push back on the adjustable cable bracket.
5.
Tighten hex nut.
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 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 19.
NOTE: When removing the blade, blade adapter, etc., be careful not
to remove or lose parts above it associated with the engine pulley.
3.
Remove blade and adapter from the crankshaft. See Figure 19.
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 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.
SERVICE AND MAINTENANCE
Blade
Adapter
Blade Bell
Support
belt Care
NOTE: Several components must be removed in order to change the
mower's self-propulsion drive belt. See an authorized Sears Service
Center to have your belt replaced.
17
4
3
5
Figure 18
Blade
Bolt
Figure 19

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