Poulan Pro 403808, Operator'S Manual

20

SERVICE AND ADJUSTMENTS

02966

A

A

02548

B

B

FRONT-TO-BACK ADJUSTMENT (See Figs. 24 and 25)

IMPORTANT:

  Deck must be level side-to-side.

To obtain the best cutting re sults, the mower blades should 
be adjusted so the front tip is 1/8" to 1/2" lower than the 
rear tip when the mower is in its highest position.

CAUTION:

 Blades are sharp. Protect your 

hands with gloves and/or wrap blade with 
heavy cloth.

•      Raise mower to highest position.
•         Position any blade so the tip is pointing straight forward. 

Measure distance (B) to the ground at front and rear 
tip of the blade.

•     If front tip of blade is not 1/8" to 1/2" lower than the 

rear tip, go to the front of tractor.

•      With an 11/16" or adjustable wrench, loosen jam nut 

A several turns to clear adjustment nut B.

•      With a 3/4" or adjustable wrench, turn front link adjust-

ment nut (B) clockwise (tighten) to raise the front of 
mower, or, counterclockwise (loosen) to lower the front 
mower.

FIG. 23

FIG. 24

B

02950

Tighten adjust nut

B

 to raise mower

Loosen adjust nut

B

 to lower mower

Loosen jam nut 

A

 fi rst

A

FIG. 25

NOTE:

  Each full turn of the adjustment nut will change 

mower height about 1/8".
•      Recheck measurements, adjust if necessary until front 

tip of blade is 1/8" to 1/2" lower than the rear tip.

•         Hold adjustment nut in position with wrench and tighten 

jam nut securely against adjustment nut.

TO REPLACE MOWER DRIVE BELT    
(See Fig. 26)

MOWER DRIVE BELT REMOVAL
•     Park tractor on a level surface. En 

gage parking 

brake.

•      Lower attachment lift lever to its lowest position.
•     Remove any dirt or grass clippings which may have 

accumulated around mandrels and entire upper deck 
surface.

•         Remove belt from electric clutch pulley (M), both mandrel 

pulleys (R) and all idler pulleys (S).

MOWER DRIVE BELT INSTALLATION 
•      Install belt around all mandrel pulleys (R) and around 

idler pulleys (S) as shown.

•      Install belt onto electric clutch pulley (M).

IMPORTANT: 

 Check belt for proper routing in all mower 

pulley grooves.
•      Raise attachment lift lever to highest position.

PRECISION SIDE-TO-SIDE ADJUSTMENT  

(See Fig. 23)
•     With all tires properly infl ated, park tractor on level 

ground or driveway.

CAUTION: Blades are sharp. Protect 
your hands with gloves and/or wrap 
blade with heavy cloth.

•      Raise mower to its highest position.
•     At both sides of mower, position blade at side and 

measure the distance (A) from bottom edge of blade 
to the ground. The distance should be the same on 
both sides.

•      If adjustment is necessary, see steps in Visual Adjust-

ment instructions above.

•         Recheck measurements, adjust if necessary until both 

sides are equal.