Craftsman 917.258680 Owner's Manual page 141

SERVICE AND ADJUSTMENTS
BOTTOM EDGE
OF MOWER TO
GROUND
BOTTOM EDGE
OF MOWER TO
GROUND
GROUND UNE
FIG. 20
SUSPENSION ARM
MFT LINK ADJUSTMENT NUT
FIG, 2!
FRONT-TO-BACK ADJUSTMENT (See Figs. 22 and 23)
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.
_li_CK aujubull_llt on
right o_u=_'4_ of tractor. Measure dis-
tance "D" directly in front and behind the m_,,u, _, __'_^' _L_" 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 !/8" to !/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
FiG. 22
BOTH FRONT LINKS MUST BE EQUAL IN LENGTH
NUT "E"
NL
TRUNNION
FIG, 23
TO REPLACE MOWER DRIVE BELT
MOWER DRIVE BELT REMOVAL (See Fig. 24) -
, Park tractor on a level surface. Engage parking brake.
* Remove four screws from L.H. mandrel cover and
remove cover.
, Roll belt over the top of L.H. 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.
o 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. 24) -
° 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.
o Roll belt into upper groove of LH. mandrel pulley.
° Carefully check belt routing making sure belt is in the
grooves correctly and inside belt keepers.
, Reassemble L.H. mandrel cover.
L.H. ELECTRIC
MANDREL _ ---117 SCREWS IDLER
-. , ,_,_4 CLUTCH
COVER _'! ...... '_ PULLEYS PULLEY
..... _,. MOWER
%\ DRIVE
,,, BELT
21
FIG. 24