Replacing The Mower Belt; Replacing The Pump Drive; Belt - Toro Z149 Z Master 74411 Operator's Manual

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 outer nut on the spring eye bolt
(Figure 45).
Figure 45
1. Outer nut
2. Idler pulley
3. Idler arm
4. Spring eye bolt
5. Remove the old belt.
Note: Start at the outside pulley and rotate
the belt off (Figure 46).
Note: Dot not remove the spring from the
eye bolt.
The spring is under tension when
installed and can cause personal injury.
Do not remove the spring from the spring
eye bolt.
5. Spring
6. 9-3/8 + 1/8 inch (238 + 3
mm)
7. Mower belt
6. Remove the spring loaded idler pulley
(Figure 45).
7. Route the new belt through the idler arm
(Figure 45).
8. Install the idler pulley and route the belt onto
the other pulleys (Figure 46).
Figure 46
1. Mower belt
2. Idler arm
3. Outside pulley
9. Tighten the outer nut on the spring eye bolt
(Figure 45).
Note: Check the spring length. The spring
should measure 9-3/8 + 1/8 inch (238 + 3
mm) when installed. Adjust it if it does not
(Figure 45).
10. 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 47).
3. Pull the spring loaded idler to the side.
4. Remove the traction belt from the engine and
the hydraulic pump pulleys (Figure 47).
5. Install the new belt around the engine and the
hydraulic pump pulleys (Figure 47).
6. Pull the spring-loaded idler to the side and
align the belt.
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4. Spring
5. Idler pulley