Toro Z453 Z Master 74416TE, Operator'S Manual

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Check belts for cracks, frayed edges, burn marks
or any other damage. Replace damaged belts.
Replacing the Mower Belt
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. Remove the belt covers over the outside
spindles.
4. Loosen the fixed idler arm and adjust it to
relieve the belt tension on the fixed idler pulley
(Figure 51).
Figure 51
1. Fixed idler arm 4. Mower belt
2. Square hole 5. Belt guide
3. Fixed Idler pulley 6. Spring-loaded idler pulley
5. Remove the old belt.
6. Install the new belt through the belt guide and
on the pulleys (Figure 51).
7. Insert a ratchet with a short extension or a
breaker bar into the square hole in the fixed
idler arm (Figure 52).
Figure 52
1. Ratchet with short
extension or breaker bar
2. Square hole
8. To increase the belt tension, rotate the ratchet
or breaker bar counterclockwise to move
the fixed idler arm until you feel increased
resistance and the spring-loaded idler pulley
stops moving.
Note:
Do not increase the belt tension
beyond the point where the fixed idler arm
stops.
9. While holding the belt in tension, tighten the 2
bolts that secure the fixed idler arm.
10. Remove the ratchet or breaker bar from the
square hole in the fixed idler arm.
11. Install the belt covers over the outside spindles.
Replacing the Pump Drive
Belt
Check the pump drive belt for wear after every
50 operating hours.
1. Remove the mower belt first; refer to Replacing
the Mower Belt.
2. Remove the bolt from the clutch stop and
unplug the clutch electrical wire (Figure 53).
3. Pull the spring loaded idler to the side.
4. Remove the traction belt from the engine and
the hydraulic pump pulleys (Figure 53).
5. Install the new belt around the engine and the
hydraulic pump pulleys (Figure 53).
6. Pull the spring-loaded idler to the side and
align the belt.
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