Replacing The Hydraulic Pump Drive Belt; Controls System Maintenance; Adjusting The Control Handle Position - Toro Z Master 74927 Operator's Manual

Replacing the Hydraulic Pump
Drive Belt
1. Disengage the PTO 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 mower belt. Refer to Replacing the Mower
Belt in Maintenance.
4. Raise the machine and support it with jack stands
(Figure 79).
Figure 79
1. Idler pulley
2. Clutch pulley
3. Pump drive belt
4. Right hand hydraulic pump
pulley
5. Use a ratchet in the square hole in the idler arm to
remove the idler spring (Figure 79).
6. Unhook the idler spring from the frame (Figure 79).
7. Remove the belt from the hydraulic unit drive pulleys
and the engine pulley
8. Install the new belt around engine pulley and the two
drive pulleys.
9. Using a ratchet in the square hole in the idler arm,
install the idler spring to the frame (Figure 79).
10. Install the mower belt. Refer to Replacing the Mower
Belt.
5. Left hand hydraulic pump
pulley
6. Square hole in idler arm
7. Idler spring
Controls System
Maintenance
Adjusting the Control Handle
Position
There are two height positions for the control levers; high and
low. Remove the bolts to adjust the height for the operator.
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 bolts and flange nuts installed in the levers
(Figure 80).
4. Align the levers front to rear position by bring the
levers together to the neutral position and slide them
until they are aligned, then tighten the bolts (Figure 81).
1. Bolt
2. Handle
50
Figure 80
3. Control lever
4. Nut