Poulan 179075 owner manual To Replace Mower Drive Belt, FRONT-TO-BACK Adjustment See Figs

SERVICE AND ADJUSTMENTS

BOTTOM EDGE	BOTTOM EDGE OF
OF MOWER TO	MOWER TO
GROUND	GROUND

A GROUNDLINE A

FIG. 20

SUSPENSION

ARM

LIFT LINK

ADJUSTMENT NUT

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.

CAUTION:Bladesaresharp.Protectyour 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 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.

•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. 22

BOTH FRONT LINKS MUST BE EQUAL
	IN LENGTH
NUT	NUT “C”
“D”
	TRUNNION
FRONT PLATE
ASSEMBLY

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.

•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. 24)

•Install belt in both idlers.

•Install new belt onto electric clutch pulley.

•Roll belt into upper groove of R.H. mandrel pulley carefully.

21