Remove the bolt and blade support which holds the blade and adapter to the engine crankshaft. Remove the blade and adapter from the crankshaft.
WARNING: Periodically inspect the blade adapter for cracks, especially if you strike a foreign object. Replace when necessary.
For best results your blade should be sharp. The blade may be resharpened by removing it and either grinding or filing the cutting edge keeping as close to the original bevel as pos- sible. It is extremely important that each cutting edge receives an equal amount of grinding to prevent an unbalanced blade. Im- proper blade balance will result in excessive vibration causing eventual damage to the en- gine and mower. Be sure to carefully balance blade after sharpening. The blade can be tested for balance by balancing it on a round shaft screwdriver. Remove metal from the heavy side until it balances evenly.
Before reassembling the blade and the blade adapter to the unit, lubricate the engine crank- shaft and the inner surface of the blade adapter with light oil. Install the blade adapter on the crankshaft with the “star” away from the engine. Refer to Figure 18. Place the blade with the side marked bottom (or with part number) facing away from the adapter. Align the blade bell support over the blade with the tabs in the holes of the blade and insert the hex bolt. Tighten the hex bolt to the torque listed below:
Blade Mounting Torque
Center Bolt 450 in. lb. min., 600 in.lb. max.
To insure safe operation of your unit, ALL nuts and bolts must be checked periodically for correct tightness.
CAUTION: Cutting grass in sandy
soil conditions causes abrasive
wear to the blade.
Blade Adapter
Blade
Blade Bell
Support
Hex Bolt
Figure 18
After prolonged use, especially in sandy soil conditions, the blade will become worn and lose some of the original shape. Cutting effi- ciently will be reduced and the blade should be replaced. Replace with an approved factory re- placement blade only. Possible damage resulting from blade unbalance condition is not the responsibility of the manufacturer.
BELT REMOVAL AND REPLACEMENT
1. Disconnect the spark plug wire and ground it against the engine.
2.Drain the fuel tank or place a piece of plas- tic beneath the cap to prevent gasoline leakage.
3.Tip the mower on its side. Block securely.
4.Remove the blade and blade adapter as described previously.
5.Move rear height adjuster to the highest position. See Figure 21.
6.Using a 3/8" socket remove three hex screws holding the baffle to the deck. See Figure 19.
Hex
Screw
Hex | Hex |
Screw | |
Screw |
|
Figure 19 |
|
Baffle
Figure 20
7.Pivot baffle towards the rear of the mower. See Figure 20.
8.Remove the hex bolt holding the transmis- sion to the mower housing. See Figure 21.
14
