Weed Eater SGT18H46C manual Service And Adjustments, To Replace Mower Drive Belt

SERVICE AND ADJUSTMENTS

SIDE-TO-SIDE ADJUSTMENT (See Figs. 18 and 19)

•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.

•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: Three full turns of adjustment nut will change mower height about 1/8".

•Recheck measurements after adjusting.

BOTTOM EDGE		BOTTOM EDGE
OF MOWER		OF MOWER
TO GROUND		TO GROUND
“A”	GROUND LINE	“A”

FIG. 18

SUSPENSION ARM

LIFT LINK ADJUSTMENT NUT

FIG. 19

FRONT-TO-BACK ADJUSTMENT (See Figs. 20 and 21)

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.

•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.

•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.

MANDREL

"D" "D"

FIG. 20

BOTH FRONT LINKS MUST BE EQUAL IN LENGTH

NUT "E"

NUT "F"

TRUNNION

FRONT LINKS

FIG. 21

TO REPLACE MOWER DRIVE BELT

MOWER DRIVE BELT REMOVAL (See Fig. 22) -

•Park tractor on a level surface. Engage parking brake. Disengage attachment clutch control.

•Remove screws from L.H. mandrel cover and remove cover.

•Remove small retainer spring and lift clutch spring off pulley bolt.

•Roll belt over the top of L.H. mandrel pulley.

•Remove belt from engine pulley.

•Remove belt from idler pulleys.

•Remove any dirt or grass clippings which may have accumulated around mandrels and entire upper deck surface.

•Check primary idler arm and two idlers to see that they rotate freely.

MOWER DRIVE BELT INSTALLATION (See Fig. 22) -

•Install belt in both idlers. Make sure belt is in both belt keepers at the idlers as shown.

•Install new belt onto engine pulley.

•Roll belt into upper groove of L.H. mandrel pulley.

•Carefully check belt routing making sure belt is in the grooves correctly and inside belt keepers.

•Reassemble clutch spring to pulley bolt.

•Reassemble L.H. mandrel cover.

21