To Replace Mower Drive Belt - Craftsman 23.0 HP 917.275031 Owner's Manual

NOTE: Each full turn of adjustment nut
will change mower height about 3/16".
• Recheck measurements after adjust-
ing.
FRONT-TO-BACK ADJUSTMENT
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
the front is approximately 1/8" to 1/2"
lower than the rear when the mower is in
its highest position.
Check adjustment on right side of tractor.
Measure distance "F" directly in front of
and behind the mandrel at bottom edge
of mower housing as shown.
• Before making any necessary adjust-
ments, check that both front links are
equal in length.
• If links are not equal in length, adjust
one link to same length as other link.
• To lower front of mower housing,
loosen nut "G" on both front links an
equal number of turns.
• When distance =F" is 1/8" to 1/2" lower
at front than rear, tighten nut "H"
against trunnion on both front links.
• To raise front of mower housing, loosen
nut "H" from trunnion on both front links.
Tighten nut "G" on both front links an
equal number of turns.
• When distance °F" is 1/8" to 1/2" lower
at front than rear, tighten nut "H"
against trunnion on both front links.
NOTE: Each full turn of nut "G" will
change dim. "F" by approximately 3/8".
• Recheck side-to-side adjustment.
Bottom Edge of Bottom Edge of
Mower to Ground Mower to Ground
\ /
BOTH FRONT LINKS MUST BE EQUAL
IN LENGTH
Nut
Front Plate Trunnion
Assembly
TO REPLACE MOWER DRIVE BELT
MOWER DRIVE BELT REMOVAL
1. Park tractor on a level surface.
Engage parking brake.
2. Remove screws from L.H. mandrel
cover and remove cover.
3. Roll belt over the top of L.H. mandrel
pulley.
4. Remove belt from electric clutch
pulley.
5. Remove belt from idler pulleys.
6. Remove any dirt or grass clippings
which may have accumulated around
mandrels and entire upper deck
surface.
7. Check primary idler arm and two
idlers to see that they rotate freely.
8. Be sure spring is securely hooked to
primary idler arm and bolt in mower
housing.
MOWER DRIVE BELT INSTALLATION
9. Install belt in both idlers. Make sure
belt is in both belt keepers at the idlers
as shown.
10.Install new belt onto electric clutch
pulley.
11.Roll belt into upper groove of L.H.
mandrel pulley.
12.Carefully check belt routing making
sure belt is in the grooves correctly
and inside belt keepers.
13.Reassemble L.H. mandrel cover.
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