To Level Mower Housing; Side-To-Side Adjustment; Front-To-Back Adjustment; Specifications - Craftsman 917.255430 Owner's Manual

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SERVICE DA
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 tires are
over or under inflated, you will not properly adjust your
mower°
SIDE-TO-SIDE ADJUSTMENT (See Figs. 18 and 19)
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.
o Place one bIock directfy behind the left mandrel. Place
the remaining block under the stamped ridge on the
right rear edge of mower deck.
- 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.
o PulI down firmly on suspension arm to remove any
slack in pivot bracket and hold while tightening rear
fastener first to secure. Tighten remaining fastener,
- Repeat procedure on other side of tractor.
= Raise mower with attachment lift control and remove
blocks from under mower.
PLACE TWO (2) 1-1/2" THICK BLOCKS UNDER REAR EDGE OF
DECK (Use wood 2 x 4's or equiv.)
I. oo°S
DIRECTLY Af /-._-
BEHIND ..._ _
X'f/_._.,
UNDER '_\" l \ _: _"_
MOWER MUST BE IN LOWEST HEIGHT OF CUT POSITION
FIG. 18
ADJUSTABLE PIVOT BRACKET
SUSPENSION ARM
FASTENERS
PULL DOWN AND
TIGHTEN REAR
FASTENER FIRST
FIG. 19 19
USTNIENT$
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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 1/4"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.
• Before makingany necessaryadjustments, checkthat
both front links are equal in length. Both links should
be apprnximately 10-3/8'L
• If links are not equal in length, adjust one link to same
length as other linko
. To lower front of mower loosen 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 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" !ower at front than
rear, tighten nut"F" against trunnion on both front links,
° Recheck side-to-side adjustment
1+_, o _+. "\ _ ot MANDREL
FIG, 20
BOTH FRONT LINKS MUST BE EQUAL IN LENGTH
NUT "i" _+
FRONT LINKS TRUNNION
NUT "E"
FIG. 21