Справочник Пользователя для briggs--stratton 5900861

 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.  Lower the mower deck to its lowest cutting position and 

remove the mower deck guards.

 3.  For 61” Decks: Using a 1/2” breaker bar, place the 

square end in the square hole located in the end of the 
idler arm (A, Figures 44).  Carefully rotate the breaker 
bar COUNTER-CLOCKWISE, which will relieve the 
tension on the belt exerted from the idler arm.

    For 72” Decks: Using the 3/4” combination wrench, 

place the box end on the nut (A, Figure 44) that secures 
the idler pulley located at the end of the idler arm.  
Carefully roate the wrench CLOCKWISE, which will 
relieve the tension on the belt exerted from the idler 
arm.

 4.  Slide the drive belt over the edge of the stationary idler 

pulley (B).  Carefully release the tension on the breaker 
bar or the combination wrench.

 5.  Remove the old belt and replace with a new one.  Make 

sure the V-side of the belt runs in the pulley grooves 
(Figure 45).

 6.  For 61” Decks: Install the drive belt on the PTO 

pulley, the spindle pulleys and all idler pulleys except 
the stationary pulley (B, Figure 44).  Carefully rotate the 
breaker bar COUNTER-CLOCKWISE and install the belt 
on the stationary idler pulley (B).  Carefully release the 
tension on the breaker bar.

    For 72” Decks: Install the drive belt on the PTO 

pulley, the spindle pulleys and all idler pulleys except 
the stationary pulley (B, Figure 44).  Carefully rotate the 
combination wrench CLOCKWISE and install the belt 
on the stationary idler pulley (B).  Carefully release the 
tension on the combination wrench.

 7.  Reinstall the mower deck guards.

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

minutes to break-in the new belt.

Regular Maintenance

Not 

for  

Reproduction