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33
SERVICE AND MAINTENANCE
2. When re-installing blades, be sure of the following (see
Figure 47 on page 32):
a. Blades (b) are installed so that wings are pointing upward
toward the top of the deck.
b. Washer (d)* is placed between bottom of blade (b) and
hex nut (a).
IMPORTANT! Align “S” shaped cutout with matching “S” shape
on spindle for secure fit.
3. Tighten hex nuts (a) to 70-90 ft-lbs (95-122 N-m).
4. Re-install the deck (refer to Deck Installation in this section).
Sharpening the Blade
1. 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 51.
Figure 51
2. 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.
Changing the Deck Belt & Reinstalling
the Deck
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
properly working tractor, use factory approved belts.
All belts on your tractor are subject to wear and should be
replaced if any signs of wear are present. To change or replace the
deck belt on your tractor, proceed as follows:
1. Remove the deck as instructed earlier in this section under
Deck Removal.
2. Loosen, but do not remove the hardware on the right and left
idler pulley.
NOTE: On some decks it may be necessary to remove the spindle
covers to remove and/or install the new belt. To remove the
spindle covers, remove the screws securing them to the deck.
3. Carefully remove the belt from around the idler pulleys and
the spindle pulleys.
4. Route the new belt as shown in the applicable figure below.
See Figure 52 for 42” decks, Figure 53 for 46” decks and
Figure 54 for 50” & 54” decks.
42” Decks
Figure 52
46” Decks
Figure 53
50” & 54”
Decks
Figure 54
NOTE: Use a 3⁄8” drive ratchet wrench as instructed in earlier
steps when routing the new belt to pivot the drive pulley.
5. Ensure that the belt is routed properly along the idler pulleys
and inside the belt keepers and retighten idler pulleys, if
loosened earlier. Torque to 256-313 in-lbs (28.9-35.4 N-m).
6. Remount the spindle covers if removed earlier.
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