19
S
ection
4 — S
ervice
IMPORTANT:
If the cutting edge of the
blade has already been sharpened to
within 1-5⁄8” from the edge, or if any metal
separation is present, replace the blades
with new ones. See Figure 4-13.
1-5/8 in
ch
(min.)
Figure 4-13
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.
WARNING!
A poorly balanced blade
will cause excessive vibration, may
cause damage to the tractor and/or
result in personal injury.
5.
Test the blade’s balance using a blade
balancer. Grind metal from the heavy side
until it balances evenly.
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!
Be sure to shut the
engine OFF, remove the key,
disconnect the spark plug wire(s)
and ground against the engine to
prevent unintended starting before
removing the belt.
WARNING!
All belts on your lawn
tractor are subject to wear and
should be replaced if any signs of
wear are present.
IMPORTANT:
The V-belt 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.
To change or replace the deck belt on your tractor,
proceed as follows:
1.
Remove the deck. Refer to Cutting Deck
Removal on page 18.
2.
Remove the belt covers by removing the
hex washer screws that fasten them to the
deck. See Figure 4-14.
Hex Washer
Screws
Belt Cover
Deck Idler
Pulley
Spindle Pulley
Belt Guard
Figure 4-14
3.
It may also be necessary to loosen the hex
nut on the left idler pulley to get the belt off
the pulley and around the belt guard.
4.
Carefully remove the deck belt from around
the two spindle pulleys and the two deck
idler pulleys. See Figure 4-14.
5.
To place the new belt, begin by routing the
belt around the two outer spindle pulleys as
shown in Figure 4-14.
6.
Route the belt around the two deck idler
pulleys as shown in Figure 4-14.
7.
Retighten the left idler pulley hex nut
loosened in step 3.
8.
Remount the belt covers removed in Step 2.
9.
Re-install the deck, making sure the belt
remains routed around the pulleys as
instructed. See Figure 4-14.
10.
Pull the right side of the belt, and place the
narrow V side of the belt into the PTO pulley.
11.
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
NOTE:
Several components must be removed and
special tools (i.e. air/impact wrench) are needed
in order to change the tractor’s drive belt. See an
authorized Service Dealer to have your drive belt
replaced.