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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 rotating at high speeds. It may cause damage to the mower, and it could break causing
personal injury.
The blade can be tested by balancing it on a round shaft screwdriver. Remove metal from the heavy side until it
balances evenly. It is recommended that the blade be removed from the adapter when testing for balance.
Before reinstalling the blade and the blade adapter to the unit, lubricate the engine crankshaft and the inner surface
of the blade adapter with light oil.
• Be sure to install the blade with the side of the blade marked “Bottom” (or with part number) facing the ground
when the mower is in the operating position.
• Slide the blade adapter onto the engine crankshaft.
• Place the blade on the adapter. Be certain the blade is aligned with and seated onto the blade adapter flanges.
• Place the blade bell support on the blade. Make sure the notches on the blade bell support are aligned with the
small holes in the blade.
• Replace hex bolt.
• Tighten hex bolt to torque: 450 in. lbs. min., 600 in. lbs. max.
NOTE: To ensure safe operation of your unit, the blade bolt must be checked periodically for correct torque.
Drive Belt Removal And Replacement
Step 1. Disconnect the spark plug wire and ground
it against the engine.
Step 2. Drain the fuel tank or place a piece of
plastic beneath the cap to prevent gasoline
leakage.
Step 3. Place shift lever in the first position.
Step 4. Tip the mower on its side. Block securely.
Step 5. Remove the center bolt which secures the
blade to the crankshaft. Remove the
blade, and the blade adapter, wave
washer, and spacer. Refer to Cutting
Blade Removal, Replacement and
Sharpening in the Maintenance Section.
Step 6. Move rear height adjuster to the sixth
position.
Step 7. Remove the hex bolt holding the
transmission to the mower housing.
Rear Height Adjustment Lever
Baffle
Hex Bolt