Poulan PD20PH48STB User Manual - Page 21

SERVICE AND ADJUSTMENTS • Engage belt tension rod by pushing rod into locking bracket. CAUTION: Belt tension rod is spring loaded. Have a tight grip on rod and engage slowly. • Connect anti-sway bar to chassis bracket under left footrest and retain with double loop retainer spring. • If equipped, turn height adjustment knob clockwise to remove slack from mower suspension. • Raise deck to highest position. TO LEVEL MOWER HOUSING Adjust the mower while tractor is parked on level ground or driveway. Make sure tires are properly inflated (See "PRODUCT SPECIFICATIONS" section of this manual). If tires are over or underinflated, you will not properly adjust your mower. SIDE-TO-SIDE ADJUSTMENT (See Figs. 20 and 21) • Raise mower to its highest position. • Measure height from bottom edge of mower to ground level at front corners of mower. Distance "A" on both sides of mower should be the same. • If adjustment is necessary, make adjustment on one side of mower only. • To raise one side of mower, tighten lift link adjustment nut on that side. • To lower one side of mower, loosen lift link adjustment nut on that side. NOTE: Each full turn of adjustment nut will change mower height about 3/16". • Recheck measurements after adjusting. BOTTOM EDGE 00598 OF MOWER TO GROUND BOTTOM EDGE OF MOWER TO GROUND CAUTION: Blades are sharp. Protect your hands with gloves and/or wrap blade with heavy cloth. Check adjustment on right side of tractor. Position any blade so the tip is pointing straight forward. Measure distance "B" at front and rear tip of the blade. • Before making any necessary adjustments, check that both front plate links are equal in length. • If links are not equal in length, adjust one link to same length as other link. • To lower front of blade, loosen nut "C" on both front links an equal number of turns. NOTE: Each full turn of nut "C" will change distance. "B" by approximately 3/16". • When distance "B" is 1/8" to 1/2" lower at front than rear, tighten nut "D" against trunnion on both front links. • To raise front of blade, loosen nut "D" from trunnion on both front links. Tighten nut "C" on both front links an equal number of turns. The two front links must remain equal in length. • When distance "B" is 1/8" to 1/2" lower at front than rear, tighten nut "D" against trunnion on both front links. • Recheck side-to-side adjustment. 02548 MANDREL "B" "B" FIG. 22 BOTH FRONT PLATE LINKS MUST BE EQUAL IN LENGTH A GROUND LINE A FIG. 20 SUSPENSION ARM LIFT LINK ADJUSTMENT NUT 01553 NUT "D" FRONT PLATE ASSEMBLY 02517 02516 TRUNNION NUT "C" FIG. 21 FRONT-TO-BACK ADJUSTMENT (See Figs. 22 and 23) IMPORTANT: DECK MUST BE LEVEL SIDE-TO-SIDE. IF THE FOLLOWING FRONT-TO-BACK ADJUSTMENT IS NECESSARY, BE SURE TO ADJUST BOTH FRONT LINKS EQUALLY SO MOWER WILL STAY LEVEL SIDE-TO-SIDE. To obtain the best cutting results, the mower blades should be adjusted so the front tip is approximately 1/8" to 1/2" lower than the rear tip when the mower is in its highest position. FIG. 23 TO REPLACE MOWER DRIVE BELT MOWER DRIVE BELT REMOVAL (See Fig. 24) • Park tractor on a level surface. Engage parking brake. • Lower mower to its lowest position. • Disengage belt tention rod from lock bracket. CAUTION: Rod is spring loaded. Have a tight grip on rod and release slowly. 21