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SERVICE AND MAINTENANCE
2. Place a block of wood between the deck housing baffle and the cutting blade
to act as a stabilizer. See Figure 49.
Figure 49
3. Remove the hex flange nut that secures the blade to the spindle assembly.
4. To properly sharpen the cutting blades, remove equal amounts of metal
from both ends of the blades along the cutting edges, parallel to the trailing
edge, at a 25° to 30° angle. Always grind each cutting blade edge equally to
maintain proper blade balance. See Figure 50.
Figure 50
5. Test the blade’s balance using a blade balancer. Grind metal from the heavy
side until it balances evenly.
WARNING
A poorly balanced blade will cause excessive vibration, may damage the
tractor and/or result in personal injury.
NOTE: When replacing the blade, be sure to install the blade with the side of
the blade marked ‘‘Bottom’’ (or with a part number stamped in it) facing the
ground when the mower is in the operating position.
CAUTION
Use a torque wrench to tighten the blade spindle hex flange nut to between
70 ft-lbs and 90 ft-lbs.
Changing the Deck Belt
CAUTION
The V-belts found on your tractor are specially designed to engage and
disengage safely. A substitute (non-OEM) V-belt can be dangerous by
not disengaging completely. For a proper working machine, use factory
approved belts.
5. Rotate the blade clockwise to align with the blade adapter. SeeFigure 47.
NOTE: If too much resistance is felt while turning the blade then the spindle
is rotating, the blade is not properly aligned on the blade adapter, and
installation will not be successful.
Figure 47
6. There will be an audible click when the blade is properly locked in place. See
Figure 48.
Figure 48
Standard Blade System (If Equipped)
WARNING
Shut the engine off and remove ignition key before removing the cutting
blade(s) for sharpening or replacement. Protect your hands by using heavy
gloves when grasping the blade.
WARNING
Periodically inspect the blade and/or spindle for cracks or damage, especially
after you’ve struck a foreign object. Do not operate the machine until
damaged components are replaced.
CAUTION
If the cutting edge of the blade has previously been sharpened, or if any
metal separation is present, replace the blades with new ones.
To remove the blades, proceed as follows.
1. Remove the deck from beneath the tractor, (refer to Deck Removal earlier in
this section) then gently flip the deck over to expose its underside.
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