Simplicity ZT2561 manual Hydraulic Pump Drive Belt Replacement, Mower Belt Replacement

Troubleshooting, Adjustment & Service

HYDRAULIC PUMP DRIVE BELT REPLACEMENT

1.Park the tractor on a smooth, level surface such as a concrete floor. Disengage the PTO, engage the parking brake, turn off the engine, and remove the ignition key.

2.Remove the PTO drive belt (see MOWER BELT REPLACEMENT for removal instructions).

3.Loosen the nut towards the front of the machine on the spring anchor hook (H, Figure 31) to release the majority of the belt tension. Use caution and remove the nut to completely release the tension.

4.Remove the old belt and replace it with the new one. Make sure the V-side of the belt runs in the grooves of the crankshaft pulley and pump pulleys (B & C, Figure 31).

5.Reinstall the anchor hook (H, Figure 31) into the anchor tab and loosely fasten the nut. Adjust the spring until a measurement of 7-3/4” is achieved from the outside if the spring hooks. Tighten nut.

6.Reinstall the PTO drive belt.

MOWER BELT REPLACEMENT

To avoid damaging belts, DO NOT

PRY BELTS OVER PULLEYS.

1.Park the tractor on a smooth, level surface such as a concrete floor. Disengage the PTO, engage the parking brake, turn off the engine, and remove the ignition key.

2.Remove the hardware fastening the PTO clutch to the rubber anchor pad.

3.Remove the hairpin clip and clevis pin and remove the deck lift foot pedal. Lift the floor plate to gain access to the PTO drive belt.

4.Loosen the spring compression nut (B, Figure 32) to release the belt tension.

5.Slide the drive belt over the edge of the idler pulley. Drop the belt from the PTO clutch pulley groove.

6.Remove the old belt and replace with a new one. Make sure the V-side of the belt runs in the pulley grooves (Figure 33).

7.Install the drive belt on the PTO pulley, the spindle pulleys and idler pulleys. Tighten the spring com- pression nut (B, Figure 32) until the belt tension spring (A, Figure 32) is 1-1/2” long.

8.Reinstall the hardware fastening the clutch to the rubber anchor pad.

9.Run the mower under no-load condition for about 5 minutes.

B	FRONT
E	A
F	D
7-3/4”
C	C
G	H

Figure 31. Hydraulic Pump Drive Belt Replacement

A.	Pump Drive Belt	E.	Idler Pulley
B.	Crankshaft Pulley	F.	Idler Arm
C.	Pump Pulley	G.	Spring
D.	Idler Pulley (stationary)	H.	Spring Anchor Hook

B A

Figure 32. Mower PTO Belt

A.Belt Tension Spring

B.Spring Compression Nut

D	B	C
A		A
		D
D
	A

Figure 33. Mower PTO Belt Routing

A.	Spindle Pulley	C.	Spring-loaded Idler Pulley
B.	PTO Drive Belt	D.	Stationary Idler Pulley

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