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15
Cutting Blade Removal, Replacement, and Sharpening
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 freign object. Replace when
necessary.
Removing the Blade
• Disconnect spark plug wire from spark plug.
• Turn mower on its side making sure that the air filter
and the carburetor are up.
• Remove the bolt and the blade bell support which
hold the blade and the blade adapter to the engine
crankshaft. See Figure 13.
• Remove the blade and the adapter from the
crankshaft.
Figure 13
Sharpening the Blade
• The blade can be sharpened with a file or on a
grinding wheel. Do not attempt to sharpen the
blade while it is still on the mower.
• Follow the original angle of grind as a guide. Make
sure that each cutting edge receives an equal
amount of grinding to prevent an unbalanced blade.
Balancing the Blade
• 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 always 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 end tips facing
up or 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 and seated on the blade adapter
flanges.
• Place blade bell support on blade. Make sure the
notches on the blade bell support are aligned with
small holes in the blade.
• Replace hex bolt and tighten hex bolt to torque: 450
in. lbs. min., 600 in. lbs. max.
NOTE: To ensure safe operation of your mower, the
blade bolt must be checked periodically for correct
torque.
Blade
Hex Bolt
Blade Bell
Adapter
Support