Low / High Speed Adjustment - Scag Power Equipment SCZII-61V-36BV Operator's Manual

Section 6
7. Tighten the jam nuts and repeat for the LH wheel.
See Figure 6-2.
8. Operate and test the machine. Actuate the steering
control levers forward and reverse several times and
return them to the neutral position.
9. Check that the drive wheels remained in neutral and
readjust if necessary.
10. Check that the steering control levers hit the stop
before the pumps reach full stroke. Adjust as
needed.
TRACKING ADJUSTMENT
CAUTION
Stop the engine and remove the key from the
ignition before making any adjustments. Wait
for all moving parts to come to a complete stop
before beginning work.
CAUTION
The engine and drive unit can get hot during
operation causing burn injuries. Allow engine
and drive components to cool before making any
adjustments.
- NOTE -
Before proceeding with this adjustment, be sure
that the caster wheels turn plus pivot freely and
that the tire pressure in the drive wheels is correct.
If the tire pressure is not correct, the machine will
pull to the side with the lower pressure.
1. If at full speed the mower pulls right, it is an
indication that the left wheel is turning faster than
the right wheel. To adjust this condition, proceed as
follows:
A. Stop the machine and place the steering control
levers in the neutral position. Turn the tracking
adjustment bolt for the LH pump inward (clockwise).
This will cause the control rod to stroke the LH pump
less, slowing down the LH wheel. See Figure 6-3.
2. If at full speed the mower pulls left, it is an indication
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. Turn the tracking
adjustment bolt for the RH pump inward (clockwise).
This will cause the control rod to stroke the RH pump
less, slowing down the RH wheel. See Figure 6-3.
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 27.
TRACKING ADJUSTMENT
BOLT
Figure 6-3. Tracking Adjustment

6.3 LOW / HIGH SPEED ADJUSTMENT

The LOW / HIGH speed linkage should be adjusted
whenever the lever will not allow the mower to change
speeds between LOW and HIGH range. If the following
procedures do not allow you to change speeds properly,
contact your authorized Scag Power Equipment dealer for
further adjustments.
1. Position a floor jack under the rear of the machine.
Raise the machine and support it to prevent it
from falling. Block the caster wheels to prevent the
machine from moving.
2. Position the speed control lever in LOW range.
3. Loosen the jam nut and remove the cotter pin
securing the speed control linkage to the speed
control rod. See Figure 6-4.
4. Adjust the speed control linkage until speed control
arm on the RH axle is against the LOW range stop.
See Figure 6-4.
5. Repeat steps for the LH axle.
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- NOTE -
R