Toro Z Master 4000 Serie Manuel De L'utilisateur page 50

Belt Maintenance
Inspecting the Belts
Service Interval: Every 50 hours
Replace the belt if it is worn. The signs of a worn belt
include squealing while the belt is rotating; the blades
slipping while cutting grass; and frayed edges, burn
marks, and cracks on the belt.
Replacing the Mower Belt
1. Park the machine on a level surface, disengage
the blade-control switch (PTO), and engage the
parking brake.
2. Shut off the engine, remove the key, and wait
for all moving parts to stop before leaving the
operating position.
3. Lower the mower to the 76 mm (3 inches) height
of cut.
4. Loosen the bolt on each belt cover.
5. Release the mower-deck curtain by removing the
cotter pin; refer to
Curtain (page 35).
6. Remove the sheet-metal guard; refer to
Removing the Sheet-Metal Guard (page
7. Remove the belt covers
Figure 57
8. Use a 3/8-inch ratchet in the square hole in the
idler arm to remove tension on the idler spring
(Figure 58).
9. Remove the belt from the mower-deck pulleys
and the clutch pulley.
10. Remove the belt guide on the spring-loaded
idler arm (Figure
11. Remove the existing belt.
12. Install the new belt around the mower pulleys
and the clutch pulley under the engine
58).
Releasing the Mower-Deck
(Figure 57).
58).
(Figure
1. Spring
2. Clutch pulley
35).
3. Mower belt
13. Install the belt guide on the idler arm
14. Using the 3/8-inch ratchet in the square hole,
install the idler spring
Note:
in the anchor grooves.
15. Install the belt covers
g027729
48
Figure 58
4. Spring-loaded idler
assembly
5. Ratchet
6. Square hole in the idler
arm for the ratchet
(Figure
Ensure that the spring ends are seated
(Figure
g334846
(Figure 58).
58).
59).