To Replace Mower Drive Belt; Front-To-Back Adjustment; Mower Drive Belt Removal/Installation - Craftsman EZ3 917.256660 Owner's Manual

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SERV
AN
ADJUSTMENTS
LIFT LINK ADJUSTMENT NUT
FIG. 20
FRONT-TO-BACK
ADJUSTMENT
(See Figs. 21 and 22)
IMPORTANT:
DECK MUST BE LEVEL SIDE-TO-SIDEo
IF
THE FOLLOWING
FRONT*TO*BACK
ADJUSTMENT
tS
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 making any necessary adjustments, check that
both front links are equal in length. Both links should be
approximately i0-3/8",
If links are not equal in length, adjust one fink to same
length as other link.
To lower front of mower loosen nut "E" on both front
linksan 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,
o
To raise front of mower, loosen nut"F" from trunnion on
both front linksoTighten 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 adjustment,
MANDREL
FIG. 21
BOTHFRONT LINKS MUST BE EQUAL IN LENGTH
NUT "E"
NUT "F
LINKS
TRUNNION
FIG. 22
TO REPLACE MOWER DRIVE BELT
MOWER DRIVE BELT REMOVAL (See Fig, 23) -
Park tractoron a level surface. Engage parking braker
°
Remove four screws from LH
mandrel cover and
remove cover.
°
Roll belt over the top of L.Ho mandrel pulley.
°
Remove belt from electric clutch 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°
Be sure spring is securely hooked to primary idler arm
and bolt in mower housing.
MOWER DRIVE BELT INSTALLATION (See Fig. 23) -
Install belt in both idlers° Make sure belt is in both belt
keepers at the idlers as shown.
.
Install new belt onto electric clutch pulley.
=
Roll bett into upper groove of L.H. mandrel pulley,
°
Carefully check belt routing making sure belt is in the
grooves correctly and inside belt keeper&
°
Reassemble L.H. mandrel cover.
L.H,
SCREWS
IDLER
MANDREL
PULLEYS
COVER \
ELECTRIC
CLUTCH
PULLEY
MOWER
DRIVE
BELT
IDLER ARM
BELT
KEEPERS
21
FIG. 23

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