Belt Maintenance; Inspecting The Belts; Replacing The Mower Belt - Toro 74279TE Operator's Manual

Belt Maintenance

Inspecting the Belts

Service Interval: Every 100 hours—Inspect the belts for
cracks and wear.
Check the belts for squealing when the belt is rotating, blades
slipping when cutting grass, frayed belt edges, burn marks and
cracks are signs of a worn mower belt. Replace the mower
belt if any of these conditions are evident.

Replacing the Mower Belt

Important: The fasteners on the covers of this machine
are designed to remain on the cover after removal.
Loosen all of the fasteners on each cover a few turns so
that the cover is loose but still attached, then go back
and loosen them until the cover comes free. This will
prevent you from accidentally stripping the bolts free
of the retainers.
The signs of a worn mower belt are squealing while the belt
is rotating, blades slipping while you are cutting grass, frayed
belt edges, burn marks, and cracks. Replace the mower belt if
you detect any of these signs.
1. Disengage the PTO, move the motion control levers to
the neutral locked position, and set the parking brake.
2. Stop the engine, remove the key, and wait for all moving
parts to stop before leaving the operating position.
3. Loosen the bottom bolt holding the mower-deck
curtain to the mower deck. Refer to
Mower-Deck Curtain (page
4. Remove the sheet metal guard. Refer to
Sheet-Metal Guard (page 30)
5. Remove the belt covers and the bolts attached to them.
6. Loosen the fixed idler arm and adjust it to relieve belt
tension (Figure 64).
7. Remove the old belt.
8. Install the new belt on the pulleys
Releasing the
30).
Removing the
(Figure 63).
1. Fixed idler arm
2. Square hole
3. Fixed idler pulley
9. Insert a ratchet with a short extension or a breaker bar
into the square hole in the fixed idler arm
10. Adjust the mower deck to the 76 mm (3 inch)
height-of-cut position.
11. To increase the belt tension, rotate the ratchet or
breaker bar counterclockwise to move the fixed idler
arm until there is 16.5 cm (6-1/2 inches) between the
spring hooks (Figure
1. Ratchet with short
extension or breaker
bar
2. 16.5 cm (6-1/2 inches)
between the spring hooks
12. While holding the belt in tension, tighten the 2 bolts
that secure the fixed idler arm.
13. Remove the ratchet or breaker bar from the square
hole in the fixed idler arm.
14. Install the belt covers with the tabs in the slots. Install
the screws and close the latches
46
Figure 63
4. Mower belt
5. Belt guide
6. Spring-loaded idler pulley
(Figure
64).
Figure 64
3. Spring-loaded idler pulley
4. Fixed Idler pulley
(Figure 65).
64).