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21
SERVICE AND ADJUSTMENTS
FIG. 23
FRONT-TO-BACK ADJUSTMENT (See Figs. 21 and 22)
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 dis-
tance “F” directly in front of and behind the mandrel at
bottom edge of mower housing as shown.
• Before making any necessary adjustments, 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.
TRUNNION
BOTH FRONT LINKS MUST BE EQUAL IN LENGTH
FRONT LINKS
NUT
“G”
NUT
“H”
FIG. 22
“F”
“F”
MANDREL
FIG. 21
TO REPLACE MOWER DRIVE BELT
MOWER DRIVE BELT REMOVAL (See Fig. 23)
• Park tractor on a level surface. Engage parking brake.
• Remove screws from L.H. mandrel cover and remove
cover.
• Roll belt over the top of L.H. mandrel pulley.
• Remove belt from electric clutch pulley.
• Remove belt from idler pulleys.
• Remove any dirt or grass clippings which may have
accumulated around mandrels and entire upper deck
surface.
• Check primary idler arm and two idlers to see that they
rotate freely.
• Be sure spring is securely hooked to primary idler arm
and bolt in mower housing.
MOWER DRIVE BELT INSTALLATION (See Fig. 23)
• Install belt in both idlers. Make sure belt is in both belt
keepers at the idlers as shown.
• Install new belt onto electric clutch pulley.
• Roll belt into upper groove of L.H. mandrel pulley.
• Carefully check belt routing making sure belt is in the
grooves correctly and inside belt keepers.
• Reassemble L.H. mandrel cover.
TO REPLACE MOWER BLADE DRIVE BELT
(See Fig. 24)
Park the tractor on level surface. Engage parking brake.
• Remove mower drive belt (See “TO REPLACE MOWER
DRIVE BELT” in this section of this manual).
• Remove mower (See “TO REMOVE MOWER” in this
section of this manual).
• Remove screws from R.H. mandrel cover and remove
cover. Unhook spring from bolt on mower housing.
• Carefully roll belt off R.H. mandrel pulley.
• Remove belt from center mandrel pulley, idler pulley,
and L.H. mandrel pulley.
• Remove any dirt or grass which may have accumulated
around mandrels and entire upper deck surface.
ELECTRIC
CLUTCH
PULLEY
IDLER
PULLEYS
PRIMARY
IDLER ARM
SPRING
L.H.
MANDREL
COVER
SCREWS
BELT
KEEPERS
MOWER
DRIVE
BELT
L.H.
MANDREL
BOLT IN
MOWER
HOUS-
ING