Loading ...
Loading ...
Loading ...
20 SECTION 4 — PRODUCT CARE
Cutting Blades
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.
2. Place a block of wood between the deck
housing baffle and the cutting blade to act
as a stabilizer. See Figure 4-6.
Figure 4-6
3. Remove the hex flange nut that secures the
blade to the spindle assembly. See Figure 4-6.
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 4-7.
Figure 4-7
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
WARNING
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.
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.
WARNING
Avoid pinching injuries. Never place your fingers on
the idler spring or between the belt and a pulley while
removing the belt.
4. Route the new belt as shown in the
applicable figure on the following pages.
See Figure 4-9 for 42” decks, Figure 4-9
for 46” decks and Figure 4-10 for 50” & 54”
decks.
42” Decks
Figure 4-8
46” Decks
Figure 4-9
50” & 54” Decks
Figure 4-10
Note: Use a ⁄” drive ratchet wrench as
instructed in earlier steps when routing the
new belt.
5. Retighten idler pulleys, if loosened earlier.
6. Remount the spindle covers if removed
earlier.
7. Re-install the deck make sure the belt
remains routed around the pulleys as
instructed.
8. On manual PTO units, re-install the engine
pulley keeper rod and the PTO cable.
9. Pull the right side of the belt and place
the narrow V side of the belt into the PTO
pulley. See Figure 4-11.
Figure 4-11
10. While holding the belt and pulley together,
rotate the pulley to the left. Continue
holding and rotating the pulley and belt
until the belt is fully rolled into the PTO
pulley.
Changing the Transmission Drive Belt
Several components must be removed and
special tools used in order to change the tractor’s
transmission drive belt. See your authorized dealer
to have the transmission drive belt replaced.
Loading ...
Loading ...
Loading ...