Poulan 178108 Lawn Mower User Manual


 
19
SERVICE AND ADJUSTMENTS
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.
FIG. 21
NUT E
BOTH FRONT LINKS MUST BE EQUAL IN LENGTH
TRUNNION
D
D
FIG. 20
NUT F
FRONT LINKS
MANDREL
TO LEVEL MOWER HOUSING
Adjust the mower while tractor is parked on level ground or
driveway. Make sure tires are properly inflated (See PROD-
UCT SPECIFICATIONS section of this manual). If tires are
over or underinflated, you will not properly adjust your
mower.
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: Each full turn of adjustment nut will change mower
height about 1/8".
Recheck measurements after adjusting.
BOTTOM EDGE
OF MOWER TO
GROUND
FIG. 18
SUSPENSION
ARM
LIFT LINK
ADJUSTMENT NUT
FIG. 19
A
A
GROUND LINE
BOTTOM EDGE
OF MOWER TO
GROUND
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. Both links should be
approximately 10-3/8".
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.