Simplicity 300 Series manual Mower Belt Replacement, Troubleshooting, Adjustment, & Service

Troubleshooting, Adjustment, & Service

Mower Belt Replacement

To avoid damaging belts, DO NOT PRY

BELTS OVER PULLEYS.

44” & 50” PTO Belt Replacement

1.Park the tractor on a smooth, level surface such as a concrete floor. Disengage the PTO, turn off the engine and lock the parking brake. Remove the key. Remove the mower or place in the lowest cutting position.

2.Move the idler arm (A, Figure 41) to relieve belt tension. Drop the belt from the PTO (electric clutch) pulley.

IMPORTANT: Note the position of all belt guides relative to the belt and pulleys before loosening.

3.Loosen the nut and lockwasher securing the idler pulley belt guide (C, Figure 41).

4.See Figure 42. Remove three capscrews securing left-hand arbor cover (D).

5.Remove the old belt and replace with a new one. Make sure the belt is seated in the pulley grooves.

6.See Figure 41. Position the idler pulley belt stop (C) in its original position so that there is a 1/8" (3mm) gap between the pulley and belt stop.

7.See Figure 42. Reinstall the left-hand arbor cover

(D). Reinstall the mower deck if removed.

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

	1/8” Gap	C
		A
B	FRONT	D

Figure 41. Mower Belt Routing

A.	Idler Pulley Arm	C. Belt Guide (44” & 50”)
B.	PTO Clutch Pulley	D. Arbor Drive Pulley

D

B

C

A

Figure 42. Mower Deck - 44" & 50” Mowers

A.Capscrew

B.Right-hand Arbor Cover

C.Spring

D.Left-hand Arbor Cover

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