Poulan Pro PB21H42, Operator'S Manual

22

SERVICE AND ADJUSTMENTS

FIG. 23

00663

RE TAIN ING 
RING

WASH ERS

SQUARE KEY 
(REAR WHEEL ONLY)

AXLE 
COVER

TO ADJUST STEERING WHEEL  

ALIGNMENT

If steering wheel crossbars are not horizontal (left to right) 
when wheels are positioned straight forward, remove steer-
 ing wheel and reassemble per instructions in the Assembly 
section of this manual.

FRONT WHEEL TOE-IN/CAMBER

The front wheel toe-in and camber are not adjustable on 
your tractor.  If damage has occurred to affect the front 
wheel toe-in or camber, contact your nearest authorized 
service center/department.

TRANSMISSION REMOVAL/REPLACEMENT

Should your transmission require removal for service or 
replacement, it should be purged after reinstallation and 
before operating the tractor.  See “PURGE TRANS MIS SION” 
in the Operation section of this manual.

TO REMOVE WHEEL FOR REPAIRS 
(See Fig.  23)

•      Block up axle securely.
•         Remove axle cover, retaining ring and washers to allow 

wheel removal (rear wheel contains a square key - Do 
not lose).

•      Repair tire and reassemble.
•      On rear wheels only:  align grooves in rear wheel hub 

and axle.  Insert square key.

•      Replace washers and snap retaining ring securely in 

axle groove.

•      Replace axle cover.
NOTE: To seal tire punctures and prevent fl at tires due to 
slow leaks, tire sealant may be purchased from your local 
parts dealer. Tire sealant also prevents tire dry rot and 
corrosion.

FIG. 22

TO REPLACE MOTION DRIVE BELT 
(See Fig. 22)

Park the tractor on level surface.  En gage parking brake.  
For as sis tance, there is a belt installation guide decal on 
bottom side of left footrest.

BELT REMOVAL -
•      Remove mower (See “TO RE MOVE MOWER” in this 

section of  manual).

NOTE: Observe entire motion drive belt and position of all 
belt guides and keepers.
•      Remove belt from stationary idler and clutching idler.
•      Remove belt downward from around en gine pulley.
•      Pull belt slack toward rear of trac tor.  Carefully remove 

belt upwards from transmission input pulley and over 
cooling fan blades.

•     Remove belt from center span keeper and pull belt 

away from tractor.

BELT INSTALLATION -
•     Carefully work new belt down around transmission 

cooling fan and onto the input pulley.

•      Slide belt into the center span keeper.
•      Pull belt toward front of tractor and roll around the top 

groove of engine pulley.

•     Install belt through stationary idler and clutch 

ing 

idler.

•     Make sure belt is in all pulley grooves and in side all 

belt guides and keep ers.

•      Install mower (See “TO IN STALL MOWER” in this sec-

 tion of manual).

ENGINE 
PULLEY

CLUTCHING 
IDLER

STA TION ARY 
IDLER

TRANS MIS SION 
INPUT PULLEY

CENTER SPAN
KEEPER