Regular Maintenance

Mower Belt Replacement

E

B

NOTICE

 

A

 

 

E

To avoid damaging belts, do NOT pry belts over pulleys.

1. Park the unit 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.

Lower the mower deck to its lowest cutting position and

D

E

D

 

remove the mower deck guard.

 

C

 

 

 

3.

Using a 3/4” combination wrench, carefully rotate the

 

 

D

 

idler arm (A, Figure 29) counter-clockwise, which will

F

 

A

 

relieve the tension on the belt exerted from the idler

B

 

arm.

 

 

E

 

 

 

C

4.

Slide the mower drive belt over the edge of the rear

 

 

 

 

 

 

stationary idler pulley (B). Carefully release the tension

 

 

 

 

on the idler arm.

 

 

 

 

WARNING

 

 

 

 

 

 

8. Use the Mower Belt Idler Spring LengthReproductionchart to

 

Spring loaded components can kick back

orf

 

D

causing injury.

 

 

D

E

E

Use extreme caution when rotating the idler arm with the

 

 

 

D

 

 

 

Not

 

 

 

 

combination wrench, due to the increased tension in he

 

 

 

 

 

spring as the idler arm is being rotated. Injury may result

Figure 29. Mower Deck Belt Routing

 

in the breaker bar is prematurely release while the spring

 

A.

Adj

stable Idler Arm

 

is under tension.

 

 

 

B. Rear Stationary Idler Pulley

 

5. Remove the old belt (C) and replace with a new one.

 

C. Mower Deck

 

Make sure the V-side of the belt runs in the pulley

 

D.

Spin

le Pulleys

 

 

E.

Idler Pulley

 

grooves.

 

 

 

F. 48” & 52” Mower Deck

 

6. Install the mower drive belt on the PTO pulley, the

 

G. 61” Mower Deck

 

spindle pulleys (D) and all idler pulleys (E) exce t the

 

 

 

 

 

rear stationary pulley (B). Carefully rotate the 3/4”

 

 

 

 

 

combination wrench counter-clockwiseand install the

 

 

 

 

belt on the rear stationary idler pulley. Carefully release

 

 

 

 

the tension on the 3/4” combination wrench.

 

 

 

C

 

7. Adjust the mower deck cutting height to 3” (7,62 cm).

 

 

 

 

 

determine the correct spring length.

 

 

 

A

 

Mower Belt Idler Spring Length

 

 

 

 

D

 

Measurement

 

 

 

 

 

 

 

B

 

 

48” Models

6-1/2”

(16,5 cm)

 

 

 

 

 

 

 

 

 

52” & 61” Models

6-3/8”

(16,2 cm)

 

Figure 30. Mower Belt Tensioner Spring Measurement

 

 

 

 

9. The measurement should equal the measurement as

 

A.

Anchor Eyebolt

 

designated in the chart. If the measurement does not

 

B.

Adjustment Nut

 

equal the measurement as designated in the chart,

 

C. Mower Belt Tensioner Spring

 

adjust the anchor eyebolt (A, Figure 30) until the desired

D. Measurement

 

measurement is acheieved.

 

10. Reinstall the mower deck guards.

 

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

 

minutes to break-in the new belt.

 

31