To Level Mower Housing; Front-To-Back Adjustment; Side-To-Side Adjustment - Craftsman 917.255572 Owner's Manual

SERVICE AND
III,I,,,,,,,NI I,N,II ,i ,,i i ill I
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 on page 3). If t'res are
over or under inflated, you will not properly adjust your
mower,
SIDE-TO-SIDE ADJUSTMENT (See Figs, 21 and 22) -
You will need two (2) standard 2 x 4 short pieces of wood
to make the following adjustment. Similar blocks measur*
ing 1-1/2" thick may also be used.
. Raise mower with attachment lift control to allow two
(2) 1-1/2" thick blocks to be placed under rear edge of
mower directly behind mandrels,
ADJUSTMENTS
,IHHI lUHHHI I
FRONT-TO-BACK ADJUSTMENT (See Figs. 23 and 24) -
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 1/4"to
3/4" lower than the rear when the mower is in its highest
position
Check adjustment on right side of tractor. Measure dis-
tance "D" directly in front and behind the mandrel at bottom
edge of mower housing as shown,
• Lower mower deck to its lowest height of cut position
(See "TO ADJUST MOWER CUTTING HEIGHT" in
Operation section of this manual).
. On both sides of tractor, loosen, but do not remove, the
fasteners securing the adjustable pivot brackets to
frame. Both brackets must be loose enough to move
freely.
• Pull down firmly on suspension arm to remove any
slack in pivot bracket and hold while tightening rear
fastener first to secure. Tighten remaining fasteners,
° Repeat procedure on other side of tractor,
• Raise mower with attachment lift control and remove
blocks from under mower
PLACE TWO (2) %1/2" THICK BLOCKS UNDER REAR EDGE OF
DECK (Usewood2 x 4's or equlvo)
MOWERMUSTBE IN LOWEST HEIGH'[OF CUTPOSITION
FIG, 21
ADJUSTABLEPIVOT
BRACKET\\
PULLDOWNAND
TIGHTENREAR
FASTENER FIRST
FIG_ 22
2O
• Before making any necessary adjustrnents, check that
both front links are equal in length, Both links should
be approximately 10-3/8'L
. 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 beth front
links an equal number of turns.
* When distance "D" is 1/4" to 3/4" 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 1/4" to 3/4" lower at front than
rear, tighten nut"F" against trunnion on both front links
. Recheck side-to-side adjustmenL
o o MANDREL
FIG, 23
BOTH FRONT LIFJKS MUST BE EQUAL IN LENGTH
• ___ii _r_.,_ ll_Tl _
NUT"E"
NUT "F"
FRONT LINKS TRUNNION
FIG. 24