Poulan Pro PO175H42LT LAWN TRACTOR - Manuel (Page 20)

20
SERVICE AND ADJUSTMENTS
FIG. 19
ENGINE
PULLEY
CLUTCHING
IDLER
STA TION ARY
IDLER
TRANS MIS SION
INPUT PULLEY CENTER SPAN
KEEPER
TO REPLACE MOTION DRIVE BELT
(See Fig. 19)
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.
TO CHECK BRAKE
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 serviced.
You may also check brake by:
1. Park tractor on a level, dry concrete or paved surface,
depress brake pedal all the way down and engage
parking brake.
2. Disengage transmission by placing freewheel control
in “transmission disengaged” position. Pull freewheel
control 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 manu-
ally push the tractor forward. If the rear wheels rotate,
then the brake needs to be serviced. Contact a qualified
service center.
TRANSMISSION REMOVAL/REPLACEMENT
Should your transmission require removal for service or
replacement, it should be purged after reinstallation and be-
fore operating the tractor. See “PURGE TRANS MIS SION”
in the Operation section of this manual.
FIG. 20
ADJUSTMENT
BOLT
NEUTRAL
LOCK GATE
MOTION CONTROL
LEVER
TRANSAXLE MOTION CONTROL LE VER
NEUTRAL ADJUSTMENT (See Fig. 20)
The motion control lever has been pre set at the factory
and adjustment should not be necessary.
•
Loosen adjustment bolt in front of the right rear wheel,
and lightly tighten.
• Start engine and move motion control lever until tractor
does not move forward or backward.
• Hold motion control lever in that position and turn engine
off.
• While holding motion control lever in place, loosen the
adjustment bolt.
• Move motion control lever to the neutral (lock gate)
position.
• Tighten adjustment bolt securely.
NOTE: If additional clearance is needed to get to ad just ment
bolt, move mower deck height to the lowest position.
After above adjustment is made, if the tractor still creeps
forward or backward while motion control lever is in neutral
position, follow these steps:
• Loosen the adjustment bolt.
• Move the motion control lever 1/4 to 1/2 inch in the
direction it is trying to creep.
• Tighten adjustment bolt securely.
• Start engine and test.
• If tractor still creeps, repeat above steps until satisfied.
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).