To Level Mower Housing; Side-To-Side Adjustment; Front-To-Back Adjustment; To Replace Mower Blade Drive Belt - Craftsman 917.270( Owner's Manual

TO LEVEL MOWER HOUSING
Adjust the mower while tractor is parked
on level ground or ddveway. Make sure
tires are properly inflated (See "PROD-
UCT SPECIFICATIONS" on page 5 of this
manual)° If tires are over or underinflated,
you will not properly adjust your mower.
SIDE-TO-SIDE ADJUSTMENT
o Raise mower to its highest position.
,, Measure height from bottom of deck
curl to ground level at front corners of
mower. Distance ".4,"on both sides of
mower should be the same.
= If adjustment is necessary, make adjust-
ment on one side of mower only.
o To raise one side of mower, tighten lift
link adjustment nut on that side.
o To lower one side of mower, loosen lift
link adjustment nut on that side.
NOTE: Each half turn of adjustment nut
will change mower height about 3/16".
o Recheck measurements after adjusting.
Bottom r--_--_--_ Bottom
o, °°"
_ine"_'ilJ -"_
Suspension
Arm
Lift LinkAdjt Nut
FRONT-TO-BACK ADJUSTMENT
iMPORTANT." Deck must be level:side-to-
side. tf the following front-to-back adjust-
ment is necessary, be sure to adjust both
front links equally so mower wilt 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.
o 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, ioosen
nut "(3" 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.
o 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.
o 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. "i=" by approximately 3/8".
° Recheck side-to-side adjustment.
Mandrel
Both Front Links Should be Equal in Length
TO REPLACE MOWER BLADE DRIVE
BELT (See Illustration Next Page)
The mower blade drive belt may be
replaced without tools. Park the tractor on
level surface. Engage parking brake.
BELT REMOVAL -
o Remove mower frown tractor (See "TO
REMOVE MOWER" in this section of
this manual).
o Work belt off both mandrel pulleys and
idler pulleys.
= Pull belt away from mower°
22