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Craftsman 917.273421 Owner's Manual page 25

18 hp electric start 46" 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
tires are properly inflated (See "PROD-
UCT SPECIFICATIONS").
If tires are
over or undefinflated,
you will not properly
adjust your mower.
SIDE-TO-SIDE
ADJUSTMENT
• Raise mower to its highest
position.
• Measure
height from bottom of deck
curl to ground level at front corners of
mower.
Distance "A" on both sides of
mower should be the same.
• 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 3/16".
• Recheck measurements
after adjusting.
Bottom
Bottom
o,
A-_r_'"" _
GmundUne
_""J-'_
m
Lift Link
_
djustment
Nut
FRONT-TO-BACK
ADJUSTMENT
IMPORTANT:
Deck must be level side-to-
side. If the following front-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 the
front is approx=mately
1/8" to 1/2" lower
than the rear when the mower is in its
highest position.
Check adjustment on d_]ht 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.
|
r"
r
| L
Both Front Links Should be Equal in Length
Nut "H"____'_
Trunnion X_Nu
t "G"
Front Links_
TO REPLACE
MOWER
DRIVE
BELT
MOWER
DRIVE
BELT REMOVAL
• Park tractor on a level surface. Engage
parking brake.
• Remove screws from left hand mandrel
cover and remove cover.
• Roll belt over the top of left hand man-
drel pulley.
• Remove belt from electdc clutch pulley.
• Remove belt from idler pulleys.
• Remove any dirt or grass clippings
which may have accumulated
around
mandrels
and entire upper deck sur-
face.
• Check primary idler arm and two idlers
to see that they rotate freely.
• Be sure spdng is securely hooked to pri-
mary idler arm and bolt in mower hous-
ing.
MOWER
DRIVE
BELT INSTALLATION
• Install be_t in both idlers.
Make sure belt
is in both belt keepers at the idlers as
shown.
• Install new belt onto electric clutch pul-
ley.
25

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