Poulan POGT20T48STA User Manual - Page 21

SERVICE AND ADJUSTMENTS 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. 17 and 18) • 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 OF MOWER TO GROUND BOTTOM EDGE OF MOWER TO GROUND • 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. BLADE "B" "B" FIG. 19 BOTH FRONT PLATE LINKS MUST BE EQUAL IN LENGTH A GROUND LINE A FIG. 17 SUSPENSION ARM NUT "D" NUT "C" LIFT LINK ADJUSTMENT NUT FRONT PLATE ASSEMBLY TRUNNION FIG. 18 FIG. 20 FRONT-TO-BACK ADJUSTMENT (See Figs. 19 and 20) 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. 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". TO REPLACE MOWER DRIVE BELT MOWER DRIVE BELT REMOVAL (See Fig. 21) • Park tractor on a level surface. Engage parking brake. • Lower mower to its lowest position. Remove screws from R.H. mandrel cover and remove cover. • Remove any dirt or grass clippings which may have accumulated around mandrels and entire upper deck surface. • Disconnect R.H.suspension arm from rear deck bracket by removing retainer spring. • Roll belt over the top of R.H. mandrel pulley carefully. • Remove belt from electric clutch pulley. • Remove belt from idler pulleys. • Check primary idler arm and two idlers to see that they rotate freely. • Be sure spring is securely hooked to primary idler arm and spring arm. MOWER DRIVE BELT INSTALLATION (See Fig. 21) • Install belt in both idlers. • Install new belt onto electric clutch pulley. • Roll belt into upper groove of R.H. mandrel pulley care- fully. 21