To Level Mower Housing; To Replace Mower Blade Drive Belt; Side-To-Side Adjustment; Front-To-Back Adjustment - Craftsman EZ3 917.270840 Owner's Manual

20.5 hp electric start 42" mower automatic lawn tractor
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TO LEVEL MOWER
HOUSING
Adjust the mower while tractor is parked
on level ground or driveway.
Make sure
tiros are propedy inflated (See =PROD-
UCT SPECIFICATIONS").
If tires are
over or underinflated,
you will not properly
adjust your mower.
SIDE-TO-SIDE
ADJUSTMENT
• Raise mower to its highest position.
• At the midpoint of both sides of mower,
measure height from bottom edge of
mower to ground.
Distance "A" on both
sides of mower should be the same or
within 1/4" of each other.
• If adjustment is necessary, make adjust-
ment on one side of mower only.
• To raise one side of mower, tighten lift
link adjustment nut on that side.
• To lower one side of mower, loosen lift
link adjustment nut on that side.
NOTE:
Each full turn of adjustment nut
will change mower height about 1/8".
• Recheck measurements
after adjusting.
Bottom
Bottom
of Curl/_(_f
CAd
Suspension
Arm
ments, 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 1/8" to 1/2" lower
at front than roar, 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 tums.
• 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.
_.Oo
_o_
Mandrel
/9 r-_',,_.L_
_.
Both Front Links Should be Equal in Length
Lift Link Adjustment Nut
FRONT-TO-BACK
ADJUSTMENT
IMPORTANT:
Deck must be level side-to-
side. If the followingfront-to-back
adjust-
ment 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.
Check adjustment on right side of tractor.
Measure distance "D" directly in front and
behind the mandrel at bottom edge of
mower housing as shown.
• Before
making any necessary adjust-
Front Links
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-
• Remove
mower from tractor (See "TO
REMOVE
MOWER"
in this section of
this manual).
• Work belt off both mandrel pulleys and
idler pulleys.
• Pull belt away from mower.
24

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