Cub Cadet 289 48" MOWER DECKS Operator's Manual page 14

1. Use the tractor lift system to raise the mower deck
off the ground.
2. Remove the internal cotter pin, flat washer, and ad-
justment clevis pin from the height adjustment
bracket. Position the caster wheel arm in the de-
sired height setting and insert the adjustment clevis
pin (Refer to Figure 24). Secure with the flat wash-
er and internal cotter pin. Repeat for other side.
3. From the left/rear of the deck, pull the adjustment
knob rearward to disengage the detent pin of the
knob from the hole in the detent hub. While
holding the knob rearward turn the roller
adjustment knob as necessary to align the
shoulder bolt in the roller pivot link with the
corresponding height index setting on the roller
guide bracket (See Figure 25).
POSITION 3
1
3
5
2
4
Figure 25
4. Release the knob and turn as necessary to align
the detent pin with the nearest hole in the hub.
NOTE: Because the weight of the mower deck may
cause some settling of the roller linkage, the cutting
blades should be measured to ensure they are level or
up to 1/8" lower in the front. If the mower deck has
been properly leveled per the previous instructions,
measuring just the right hand cutting blade is sufficient.
5. Carefully rotate the outer cutting blades so that
the ends of the right blade point to the front and
rear of the tractor (Refer to Figure 21).
6. Lower the deck to level surface below.
7. Holding the chute deflector upward, measure the
distance between the front most cutting edge of
the blade and the surface. Repeat for the rear
most cutting edge and compare the two
measurements.
a. If the front measurement is the same as, or up
to 1/8" less than the rear measurement, no ad-
justment is required.
b. If the rear measurement is greater than 1/8"
higher than the front measurement, turn the
roller adjustment knob clockwise as needed to
raise the roller and achieve the specified pitch
of the deck.
ROLLER
ADJ. KNOB
SET IN
1
2
3
4
5
SHOULDER BOLT
c. If the front measurement is greater than the
rear measurement, turn the roller adjustment
knob counterclockwise as needed to lower the
roller and achieve the specified pitch of the
deck. Remember the detent pin of the adjust-
ment knob should engage the nearest hole in
the detent hub.
USING HEIGHT ADJUSTMENT KNOB - TRACTORS
WITH DECK DOWNSTOP ONLY
A full rotation of the height adjustment knob equals ap-
proximately a 1/4 inch adjustment in the deck height
setting. There are four detent positions per rotation. Ini-
tially set the deck downstop as follows (Refer to Figure
26):
1. To remove the weight of the deck from the downstop
arm, use the tractor lift system to raise the deck.
Move the caster wheels and rollers to their highest
position.
2. Fully lower the deckstop by continuously turning
the height adjustment knob counterclockwise.
RAISE
LOWER
3. Use the tractor lift system to lower the deck to the
desired height setting, then turn the adjustment
knob clockwise until it stops turning freely. Turn
the knob to nearest detent position.
4. Position the caster wheels and roller so that they
are approximately 1/2 inch above the ground.
5. For subsequent minor adjustments from this
position, use the tractor lift system to raise the deck,
then turn the adjustment knob as necessary to
attain the desired height setting (one full turn
equals approximately 1/4"). Reposition the caster
wheels and rollers if necessary.
USING THE CASTER WHEELS AND ROLLERS ON
TRACTORS WITH DECK DOWNSTOP
To use the caster wheels/rollers for setting the cutting
height on tractors equipped with the deck downstop,
make certain to lower the downstop using the height
adjustment knob. Then follow the previous instructions
for setting the cutting height using the caster wheels
and rollers.
14
HEIGHT
ADJUSTMENT
KNOB
Figure 26