To Replace Mower Drive Belt; Front-To-Back Adjustment - Craftsman 917.275021 Owner's Manual

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 blades should be adjusted so the
front tip is approximately 1/8" to 1/2" lower
than the roar tip when the mower is in its
,_ghest position.
CAUTION: Blades are sharp. Protect
your hands with gloves and/or wrap
blade with heavy cloth.
Bottom Edge of Bottom Edge of
Mower to Ground Mower to Ground
\ /
(_ Suspension
_ _--_\\ Li. Link
' Adjustment
__ Nut
Check adjustment on right side of tractor.
Position any blade so the tip is pointing
straight forward. Measure distance "B" at
front and rear tip of blade
• 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 blade, loosen nut =C"
on both front links an equal number of
turns.
NOTE: Each full turn of nut "C" will
change dim. "B" by approximately 3/16".
• When distance "B" is 118"to 1/2" lower
at front than rear, tighten nut "D"
against trunnion on both front links.
• To raise front of blade, loosen nut "D"
from trunnion on both front links.
Tighten nut "C" on both front links an
equal number of turns.
• When distance "B" is 1/8" to 1/2" lower
at front than rear, tighten nut "D"
against trunnion on both front links.
• Recheck side-to-side adjustment.
Blade
"B" "B"
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. Lower mower to its lowest position.
3. Remove screws from R.H. mandrel
cover and remove cover.
4. Remove any dirt or grass clippings
which may have accumulated around
mandrels and entire upper deck
surface.
5. Disconnect R.H. suspension arm from
rear deck bracket by removing
retainer spring.
6. Carefully roll belt over the top of R.H.
mandrel pulley.
7. Remove belt from electric clutch
pulley.
8. Remove belt from idler pulleys.
9. Check primary idler arm and two
idlers to see that they rotate freely.
10. Be sure spring is securely hooked to
primary idler arm and spring arm.
MOWER DRIVE BELT INSTALLATION
11.Install belt in both idlers.
12. Install new belt onto electric clutch
pulley.
13. Carefully roll belt into upper groove of
R.H. mandrel pulley.
14.Carefully check belt routing making
sure belt is in the grooves correctly.
15.Reconnect R.H. suspension arm to
rear deck bracket with retainer spring.
18.Reassemble R.H. mandrel cover.
25