Cub Cadet 997 Operator's Manual download pdf (Page 14)

SECTION 8: SERVICING THE MOWER

Blade Care

Periodically inspect the blade adapter for cracks,

especially if you strike a foreign 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 15.

• Remove the blade and the adapter from the

crankshaft.

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.

Installing the Blade

• 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 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,

periodically check the blade bolt for correct torque.

Figure 15

Drive Belt Replacement

• Disconnect the spark plug wire and ground it

against the engine.

• Drain the fuel tank or place a piece of plastic

beneath the cap to prevent gasoline leakage.

• Place shift lever in the first position and tip the

mower on its side with air filter facing up.

• Remove the center bolt which secures the blade to

the crankshaft followed by blade bell support,

blade, and blade adapter.

• Move the cutting height adjustment to the highest

position.

• Remove the three hex screws holding the baffle to

the deck and pivot baffle towards the rear of the

mower. See Figure 16.

Figure 16

WARNING: Always stop the engine and

disconnect the spark plug wire before

performing any maintenance work or

adjustments on your lawn mower.

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.

WARNING: An unbalanced blade will cause

excessive vibration when rotating at high

speeds. It may cause damage to the mower,

and could break causing personal injury.

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Cub Cadet 997 Operator's Manual Page 14

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