briggs--stratton 5900681 ユーザーズマニュアル

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Perform these adjustments on a flat level surface.

 1.  With the mower installed, place the rider on a 

smooth, level surface such as a concrete floor. 
Turn the front wheels so they are straight.

 2.  Check for bent blades and replace if necessary.

 3.  Place the mower cutting height pin in the 4th hole 

from the bottom (see insert, Figure 40). Arrange 
the outside mower blades so that they are pointing 
from side-to-side (Figure 38).

 4.  Measure the distance between the outside tips of 

each blade and the ground (Figures 38 & 39). If 
there is more than 1/8” (3mm) difference between 
the measurements on each side, proceed to step 
5. If the difference is 1/8” (3mm) or less, proceed 
to step 6.

 5.  Use the rear leveling links (B, Figure 40) to adjust 

the side-to-side leveling of the deck.  Repeat step 
4 if necessary.

 6.  Arrange the blades so they face front-to-back 

(Figure 41).

 7.  Measure the distance from the ground to the front 

tip of the center blade, and from the ground to rear 
tips of left-hand and right-hand blades (Figures 39 
& 41).  The front tip of the center blade should be 
1/4” (6mm) higher than rear tips of left-hand and 
right-hand blades.  If not, proceed with steps 8 - 
11.

 8.  Check the length of the hanging rods.  The rear 

(D, Figure 40) should be 15” (38,1cm) and is not 
adjusted.  To adjust the pitch of the mower deck, 
adjust the front leveling nuts only.

 9.  Loosen the front lock nuts (E, Figure 40).

 10. Turn the leveling nuts (A, Figure 40) counter- 

clockwise to lower the front of mower deck.  Turn 
the nuts clockwise to raise the front of the mower.  
Make adjustments in small increments, trying to 
keep tension on both leveling nuts.

 11. Tighten the front lock nuts (E).

 12. Re-check the blade measurement then repeat 

steps 7-11 as necessary.

Troubleshooting, Adjustments, & Service

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for  

Reproduction