Troy-Bilt 12A-998Q766, Operator'S Manual

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14
Lubrication
Refer to the lubrication chart in Figure 17.
Blade Control Handle
• Lubricate the pivot points on the blade control
handle at least once a season with light oil. The
blade control must operate freely in both directions.
Rear Discharge Door
• Lubricate the torsion spring and the pivot point on
each end of the chute door using a light oil. This will
prevent rusting of the chute door.
Wheels
• Lubricate the wheels and bearings, if so equipped,
at least once a season with light oil or engine oil.
Also, if the wheels are removed for any reason,
lubricate the surface of the axle bolt and the inner
surface of the wheel with light oil.
Engine
• Follow the engine manual instructions and
recommended schedule for lubricating engine
components.
Figure 17: Lubrication Chart
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 18.
• 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
Lubricate
Lubricate
Lubricate
Lubricate
Lubricate
Lubricate
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.