Troubleshooting, Adjustment & Service

Troubleshooting

BELT REMOVAL & REPLACEMENT

To avoid damaging belts, DO NOT

PRY BELTS OVER PULLEYS.

Mower Drive Belt Removal &

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 height adjustment pin (A, Figure 46) and lower deck.

3.Loosen the 5/16” bolts securing the mower deck guards and remove the guards.

4.Using a 3/4” combination wrench, rotate the spring-loaded idler pulley (A, Figure 47) CLOCKWISE to release the belt tension.

5.Slide the drive belt over the edge of the stationary idler pulley (C) and carefully release the tension on the wrench until the spring tension is completely released.

A

Figure 46. Lower the Mower Deck

A. Height Adjustment Pin

A

C

B

Figure 47. Mower PTO Belt

A.Spring-loaded Idler Pulley

B.Idler Spring

C.Stationary Idler Pulley

WARNING

Use extreme caution when rotating the idler pulley with the wrench, due to the increased tension in the spring as the idler pulley is being rotated. Injury may result if the wrench is prematurely released while the spring is under tension.

6.Remove the old belt and replace with a new one.

7.Install the drive belt on the gearbox pulley, the spindle pulleys and idler pulleys.

8.Rotate the spring-loaded idler pulley (A, Figure 47) CLOCKWISE and slide the drive belt over the edge of the stationary idler pulley (C). Make sure the V-side of the belt runs in the pulley grooves (Figure 48). Carefully release the tension on the wrench.

9.Reinstall the mower deck guards and tighten the 5/16” hardware to secure in place.

10.Run the mower under no-load condition for approximately 5 minutes to break in the belt.

D

C

B

A

 

A

D

 

 

D

 

 

72” Side

A

 

 

 

Discharge Model

 

 

D

C

B

A

 

A

D

A

 

 

 

61” Models &

 

 

72” Rear Discharge Models

 

 

Figure 48. Mower PTO Belt Routing

A.Spindle Pulley

B.PTO Drive Belt

C.Spring-loaded Idler Pulley

D.Stationary Idler Pulley

46

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Briggs & Stratton 5900619 manual Belt Removal & Replacement, Mower Drive Belt Removal Replacement

5900619 specifications

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In summary, the Briggs & Stratton 5900619 is a standout choice for anyone looking to enhance their lawn care equipment. With its compatibility across various mower models, durability, advanced technology, ease of installation, and consistent performance, it represents a significant investment in maintaining the health and efficiency of outdoor machinery. This engine part is not just a replacement—it’s a commitment to better gardening outcomes.