3 throttle control and choke adjustments, 4 belt adjustment, 5 belt alignment – Scag Power Equipment STWC61V-25KA-LC User Manual
Page 28: 6 cutter deck adjustments, Warning

24
R
Section 6
If at full speed the mower pulls left, it is an indication
2.
that the right wheel is turning faster than the left 
wheel. To adjust this condition, proceed as follows:
A. Stop the machine and place the steering control 
levers in the neutral position. Loosen the lock nuts 
securing the ball joints at each end of the RH steering 
control rod. Rotate the control rod to lengthen the rod 
and tighten the lock nuts. This will cause the control 
rod to stroke the RH pump less, slowing down the RH 
wheel. See Figure 6-3.
- NOTe -
If after making the adjustment as outlined in step 
2A, the machine creeps forward or backward, 
perform the neutral adjustment. See Neutral 
Adjustment on page 23.
THROTTLE CONTROL AND CHOKE
6.3 
ADJUSTMENTS
These adjustments must be performed by your Scag 
dealer to ensure proper and efficient running of the 
engine. Should either need adjustment, contact your 
authorized Scag service center.
BELT ADJUSTMENT
6.4
WARNING
Before removing any guards, shut the engine off 
and remove the ignition key.
All drive belts are spring loaded and self-tensioning, 
however after the first 2, 4, 8 and 10 hours of operation, 
the belts should be checked for proper alignment and 
wear. Thereafter, check the belts after every 40 hours of 
operation or weekly, whichever occurs first.
BELT ALIGNMENT
6.5
Belt alignment is important for proper performance of 
your Scag mower. If you experience frequent belt wear 
or breakage, see your authorized Scag service center for 
belt adjustment.
CUTTER DECK ADJUSTMENTS
6.6
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:
On the front LH side of the cutter deck locate the
1.
cutter deck level adjusting bracket. See Figure 6-4.
LOOSEN 
HERE
ADJUST 
HERE
Cutter Deck Level Adjustment
Figure 6-4.
Loosen the two (2) elastic stop nuts. Adjust the bolt
2.
up or down on the adjustment bracket 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.
Tighten the two (2) elastic stop nuts to secure the
3.
cutter deck in the proper position.
