13
Lubrication
Figure 9: Lubrication Chart
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 and the inner surface of the wheel with light oil.
Mulch Plug & Rear Discharge Door
•
Lubricate the torsion spring and the pivot point on each
end of the rear discharge door using a light oil.
Transmission
•
The transmission is pre-lubricated and sealed at the
factory and does not require lubrication on a regular basis
as part of maintenance.
Blade Control
•
Lubricate the pivot points on the blade control handle and
the brake cable at least once a season with a light oil. It
needs to move in both directions.
Engine
•
Follow the engine manual instructions and recommended
schedule for lubricating engine components.
Blade Care
•
Periodically inspect the blade adapter and pulley for
cracks, especially if you strike a foreign object. Replace
when necessary.
•
Disconnect spark plug wire from spark plug.
•
Turn mower on its side making sure that the air filter and
the carburetor are up.
To Remove Blade:
•
Remove the hex bolt which holds the blade adapter-
pulley assembly to the engine crankshaft. See Figure 10 .
Remove the pulley assembly and the bell support from
the crankshaft.
•
Remove blade from the blade adapter and pulley.
Figure 10
To Replace Blade:
•
Before reinstalling the blade-pulley assembly to the unit,
lubricate the engine crankshaft and the inner surface of
the blade adapter with light oil.
•
Also lubricate the bolt hole and the hex bolt.
•
Insert the hex bolt, earlier removed, through the center
holes on the blade bell support and the blade adapter-
pulley assembly respectively.
•
Install the blade assembly on the crankshaft. Tighten the
hex bolt to the recommended torque.
Blade Mounting Torque:
Center bolt: 450 in.lbs. minimum, 600 in.lbs. maximum.
IMPORTANT:
The bolt used to secure the blade to the engine
is specially heat-treated.
Do not substitute.
To order
replacement bolt, refer to the parts list in the back of this
manual.
To Sharpen 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.
NOTE:
An unbalanced blade will cause excessive vibration
when rotating at high speeds, may cause damage to the
mower and could break, causing personal injury. Test the
blade by balancing it on a round shaft screwdriver or a blade
balancer.
•
If the blade is not balanced, remove metal from the heavy
side until it balances evenly.
WARNING:
When removing the cutting
blade for sharpening or replacement, protect
hands by using heavy gloves or a thick rag to
grasp the cutting blade.
Lube
Lube
Lube
Lube
WARNING:
To ensure safe operation of
your unit, all nuts and bolts must be checked
periodically for correct tightness.
Adapter-Pulley
Assembly
Blade
Hex Bolt
Blade Bell
Support
