briggs--stratton 5900302 用户手册

Troubleshooting, Adjustment & Service

 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 50) 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).

 5.  Reinstall the anchor hook (H) into the anchor tab 

and loosely fasten the nut.  Adjust the spring until 
a measurement of 7-3/4” (19,7cm) is achieved 
from the outside of the spring hooks.  Tighten nut.

 6.  Reinstall the PTO drive belt.

7-3/4”

(19,7cm)

Not 

for  

Reproduction