Poulan PP21H42 manual To Replace Mower Blade Drive Belt See Fig, Mandrel, Suspension, Arm

SERVICE AND ADJUSTMENTS

SIDE-TO-SIDE ADJUSTMENT (See Fig. 17)

•Raise mower to its highest position.

•At the midpoint of both sides of mower, measure height from bottom edge of mower to ground. Distance “A” on both sides of mower should be the same or within 1/4" of each other.

BOTTOM EDGE		BOTTOM EDGE
OF MOWER TO	00598	OF MOWER TO
GROUND		GROUND
A	GROUND LINE	A

FIG. 17

•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 1/8".

•Recheck measurements after adjusting.

FRONT-TO-BACK ADJUSTMENT (See Figs. 18 - 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 housing should be adjusted so that the front is approximately 1/8" to 1/2" lower than the rear when the mower is in its highest position.

Check adjustment on right side of tractor. Measure distance “D” directly in front and behind the mandrel at bottom edge of mower housing as shown.

01268

MANDREL

“D” “D”

FIG. 18

•Before making any necessary adjustments, check that both front 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 mower loosen nut “E” on both front links an equal number of turns.

•When distance “D” is 1/8" to 1/2" lower at front than rear, tighten nuts “F” against trunnion on both front links.

•To raise front of mower, loosen nut “F” from trunnion on both front links. Tighten nut “E” on both front links an equal number of turns. The two front links must remain equal in length.

•When distance “D” is 1/8" to 1/2" lower at front than rear, tighten nut “F” against trunnion on both front links.

•Recheck side-to-side adjustment.

SUSPENSION

ARM

01553

LIFT LINK ADJUSTMENT NUT

FIG. 19

BOTH FRONT LINKS MUST BE EQUAL IN LENGTH

01267

NUT “E”

NUT “F”

TRUNNION

01156

FRONT LINKS

FIG. 20

TO REPLACE MOWER BLADE DRIVE BELT (See Fig. 21)

The mower blade drive belt may be replaced without tools. Park the tractor on level surface. Engage parking brake.

IDLER PULLEYS

MANDREL

PULLEYS

0 2314

FIG. 21

21