briggs--stratton 5900302 用户手册

 1.  Park machine on a flat, level surface.  Disengage 

the PTO, stop the engine and engage the parking 
brake.  Rear tires must be inflated to 15 psi (1,03 
bar); front tires to 25 psi (1,72 bar).

 2.  Lock the deck lift pedal in the 5” (12,7cm) position.  

Place the deck height adjustment pin in the 4” 
position and lower deck the lift pedal until the arm 
contacts the pin.

 3.  Place 2 x 4 blocks under each corner of the 

mower deck with the 3-1/2” sides being vertical.  
See Figure 42.

 4.  Adjust the front eyebolts until the chains are tight 

and the deck is still resting on the 2 x 4’s.  Tighten 
jam nuts.  See Figure 43.

 5.  Loosen the nuts and allow the rear of the deck to 

rest on the 2 x 4’s.  Slide the chains down in the 
slots until the chains are tight and tighten the nuts.  
See Figure 43.

 6.  Remove all 2 x 4 blocks from under the mower 

deck.

 7.  See Figure 44.  Position the outside mower blades 

so they face front-to-back.

 8.  Measure from the front tip of the blade from the 

cutting edge to the ground.  Measure from the 
rear tip of the blade from the cutting edge to the 
ground.  The measurement should be 4” (10,2 
cm).  Repeat this process for the other side of the 
machine.

The deck lift springs (A, Figure 45) are factory set to 
provide optimal lifting performance.

Although it is fastened with a multi-position anchor, 
this is NOT AN ADJUSTMENT POINT.

DO NOT attempt to adjust the spring length or lifting 
performance will be compromised.

Troubleshooting, Adjustment & Service

Not 

for  

Reproduction