Cutter Deck Adjustments - Scag Power Equipment STT Operator's Manual

Section 6

6.6 CUTTER DECK ADJUSTMENTS

Cutter deck level, pitch and height are set at the factory.
However, if these adjustments should ever need to be
made, the following procedures will aid in obtaining the
proper cutter deck adjustment.
-NOTE-
Before proceeding with the cutter deck
adjustments, be sure that all tires are properly
inflated.
Cutter Deck Level
The cutter deck should be level from side-to-side for
proper cutting performance. To check for level, be sure
that the mower is on a flat, level surface, the tires are
properly inflated and the cutter deck is set at the most
common cutting height that you will use. On the RH side
of the machine, check the distance from the bottom of
the cutter deck to the floor. Next check the distance
from the bottom of the cutter deck to the floor on the LH
side of the machine. Both measurements should be the
same. If the two measurements are different, the cutter
deck level must be adjusted as follows:
1. On the front LH side of the cutter deck locate the
cutter deck adjusting bolt.
Figure 6-5. Cutter Deck Adjustment
2. Loosen the serrated flange hex nut and move the bolt
up or down in the slot to adjust the cutter deck until
the distance from the bottom of the cutter deck to
the floor is the same as the measurement on the RH
side of the machine.
3. Tighten the serrated hex nut to secure the cutter
deck in the proper position.
Cutter Deck Pitch
The pitch of the cutter deck should be 1/4" down toward
the front of the cutter deck for proper cutting
performance. To check for proper deck pitch, be sure
that the mower is on a flat, level surface and the tires are
properly inflated.
Check the distance from the bottom of the cutter deck to
the floor at the rear RH side of the cutter deck directly
behind the cutter deck hanging chains. Next check the
distance from the bottom of the cutter deck to the floor
at the front RH side of the cutter deck directly in front of
the cutter deck hanging chains. The measurement at the
front of the cutter deck should be 1/4" lower than the
measurement at the rear of the deck. Make these
measurements at the LH side of the cutter deck also. If
the measurement at the front of the deck is not 1/4"
lower, the cutter deck pitch must be adjusted as follows:
1. Loosen the jam nut on both adjusting rods. (See
Figure 6.5)
2. Using a wrench on the jam nut (See Figure 6.5) turn
the adjusting rods until the 1/4" forward pitch is
obtained on both the RH and the LH side of the
JAM NUT
cutter deck. Tighten both jam nuts.
ADJUST HERE
To prevent the cutter deck from teetering, all four
cutter deck hanging chains must have tension on
them. If all four chains do not have tension on
them and the deck teeters, you must readjust the
cutter deck as outlined in the procedures above.
390S0174-1
23
-NOTE-