Changing The Deck Belt - Troy-Bilt HYDROSTATIC LAWN TRACTOR - HORSE 769-06304 Operator's Manual

The blades may be removed as follows.
1. Remove the deck from beneath the tractor,
Deck Removal earlier in this section) then gently flip the deck
over to expose its underside.
2. Place a block of wood between the center deck housing
baffle and the cutting blade to act as a stabilizer. See Fig. 7-5.
3. Remove the hex flange nut that secures the blade to the
spindle assembly. See Fig. 7-5.
Figure 7-5
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.
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 Fig. 7-6.
Figure 7-6
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.
(refer to Cutting
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.

Changing the Deck Belt

IMPORTANT:
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 as instructed earlier in this section.
2. Remove the belt covers by removing the hex washer
screws that fasten them to the deck. See Fig. 7-7.
Hex Washer Screws
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 Fig. 7-7.
WARNING!
A poorly balanced blade will cause
excessive vibration, may cause damage to the
tractor and/or result in personal injury.
CAUTION:
Use a torque wrench to tighten the
blade spindle hex flange nut to between 70 lbs-ft
and 90 lbs-ft.
WARNING!
Be sure to shut the engine off, remove
ignition key, disconnect the spark plug wire(s) and
ground against the engine to prevent unintended
starting before removing the belt.
WARNING!
All belt on your tractor are subject to
wear and should be replaced if any signs of wear are
present.
The V-belt found on your tractor are specially
Spindle Pulley
Belt Guard
Deck Idler Pulley
Figure 7-7
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ectiOn ectiOn
Belt Cover
7 — s 7 — s 25 25
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