Poulan PR20PH42STD User Manual - Page 21

SERVICE AND ADJUSTMENTS TO CHECK BRAKE • Park tractor on a level, dry concrete or paved surface, depress clutch/brake pedal all the way down and engage parking brake. • 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 manually push the tractor forward. If the rear wheels rotate, the brake needs to be adjusted or the pads need to be replaced. TO ADJUST BRAKE • Depress clutch/brake pedal all the way down and en- gage parking brake. • Measure distance between brake operating arm and nut "A" on brake rod. • If distance is other than 1-3/4", loosen jam nut and turn nut "A" until distance becomes 1-3/4". Retighten jam nut against nut "A". • Engage transmission by placing freewheel control in "transmission engaged" position. • Road test tractor for proper stopping distance as stated above. Readjust if necessary. If stopping distance is still greater than five (5) feet in highest gear, further maintenance is necessary. Replace brake pads or contact a qualified service center. WITH PARKING BRAKE "ENGAGED" 1-3/4" NUT "A" • Remove belt from stationary idler and clutching idler. • Remove belt downward from engine pulley and around electric clutch. • Pull belt slack toward rear of tractor. 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 belt around electric clutch and onto engine pulley. • Install belt through stationary idler and clutching idler. • Reinstall clutch locator and tighten nut securely. • Reconnect clutch harness. • Make sure belt is in all pulley grooves and inside all belt guides and keepers. • Install mower (See "TO INSTALL MOWER" in this section of manual). ELECTRIC CLUTCH CLUTCH LOCATOR CLUTCHING IDLER STATIONARY IDLER JAM NUT CENTER SPAN KEEPER TRANSMISSION INPUT PULLEY CLUTCH WIRE HARNESS OPERATING ARM 01511 FIG. 25 02537 DO NOT TOUCH THIS NUT. IF FURTHER BRAKE ADJUSTMENT IS NECESSARY CONTACT YOUR NEAREST AUTHORIZED SERVICE CENTER/DEPARTMENT TRANSMISSION REMOVAL/EPLACEMENT Should your transmission require removal for service or replacement, it should be purged after reinstallation and FIG. 24 TO REPLACE MOTION DRIVE BELT (See Fig. 25) before operating the tractor. See"PURGETRANSMISSION" in the Operation section of this manual. TO ADJUST STEERING WHEEL ALIGNMENT Park the tractor on level surface. Engage parking brake. For assistance, there is a belt installation guide decal on bottom side of left footrest. BELT REMOVAL - If steering wheel crossbars are not horizontal (left to right) when wheels are positioned straight forward, remove steering wheel and reassemble per instructions in the Assembly section of this manual. • Remove mower (See "TO REMOVE MOWER" in this section of manual). NOTE: Observe entire motion drive belt and position of all belt guides and keepers. • Disconnect clutch wire harness. 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. • Remove clutch locator. 21