Poulan Pro PP21H42 LAWN TRACTOR - Manual (Page 22)

22
SERVICE AND ADJUSTMENTS
TO CHECK AND ADJUST BRAKE
(See Fig. 22)
Your tractor is equipped with an ad just able brake system
which is mounted on the right side of the transaxle.
If tractor requires more than five (5) feet to stop at highest
speed in high est gear on a level, dry concrete or paved
surface, then brake must be checked and ad just ed.
TO CHECK BRAKE
• Park tractor on a level, dry concrete or paved surface,
depress clutch/brake pedal all the way down and en-
gage parking brake.
• Disengage transmission by placing freewhel control
in “transmission disengaged” position. Pull freewheel
con trol out and into the slot and release so it is held in
the disengaged position.
The rear wheels must lock and skid when you try to manually
push the tractor forward. If the rear wheels rotate, the brake
needs to be adjusted or the pads need to be replaced.
JAM NUT
OPERATING
ARM
NUT “A”
02537
WITH PARKING BRAKE “ENGAGED”
DO NOT TOUCH THIS NUT. IF FURTHER BRAKE AD-
JUST MENT IS NECESSARY CONTACT YOUR NEAR EST
AUTHORIZED SERVICE CENTER/DEPARTMENT
1-3/4"
FIG. 22
TO ADJUST BRAKE
• Depress clutch/brake pedal all the way down and
en gage parking brake.
FIG. 23
TO REPLACE MOTION DRIVE BELT
(See Fig. 23)
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
• Engage transmission by placing freewheel control in
“trans mis sion engaged” position.
• Road test tractor for proper stopping distance as stated
above. Readjust if nec es sary. If stopping distance is
still greater than five (5) feet in high est gear, further
main te nance is nec es sary. Replace brake pads or
contact a qualified service center.
BELT REMOVAL -
• Remove mower from tractor (See “TO REMOVE
MOW ER” in this section of this manual).
• Work belt off both mandrel pulleys and idler pulleys.
• Pull belt away from mower.
BELT INSTALLATION -
• Install new belt in reverse order of removal.
• Make sure belt is in all pulley grooves and in side all
belt guides.
• Install mower in reverse order of removal instructions.
• Measure distance between brake operating arm and
nut “A” on brake rod.
• If distance is other than 1-9/16", loosen jam nut and
turn nut “A” until distance becomes 1-9/16". Retighten
jam nut against nut “A”.