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Figure 6-2 Throttle Control Adjustment
6.4 CUTTER BRAKE LINKAGE
The cutter brake linkage is self-adjusting. If the brake will
not hold the cutter blades from turning, consult your Scag
dealer. Do not operate the mower if the cutter brake is not
functioning properly.
6.5 FAN BELT ADJUSTMENT
1. Remove the pump belt guard to gain access to the fan
drive idler bracket.
2. Loosen the two bolts (A and B, Figure 6-3). Using a
3/8 inch ratchet wrench installed in hole C, rotate the
bracket until 1/2 inch deflection in the belt is observed
using 10 pounds of pressure on the belt. See Engine
Drive Belts, section 7.9 for checking method.
-NOTE-
If you turn the nut too much, you will com-
press the spring, making too much end play.
Go to step 4.
4. If the drive wheels rotate in rearward travel direction,
turn the adjustment bolt (Figure 6-1) clockwise until
rotation stops. If the drive wheels rotate in the for-
ward travel direction, turn the adjusting bolt counter-
clockwise until rotation stops.
5. Check the adjustment of the right foot pedal for full
forward speed. The bottom of the foot pedal should be
1/4 inch from the top of the foot plate (See Figure 6-1)
when the pump is stroked in the full forward position.
To make an adjustment, loosen the jam nut at the
pump control bellcrank (Figure 6-1). Depress the foot
pedal and turn the control rod until 1/4 inch is obtained
between the bottom of the foot pedal and the top of the
foot plate. Tighten the jam nut.
6. Start the engine. The drive wheels should rotate only
when the forward/reverse foot pedal is depressed.
6.3 THROTTLE CONTROL LINKAGE
ADJUSTMENT
Should the throttle control lever not stay in
position after moving it to increase or decrease the
engine speed, the throttle linkage must be
tightened. Hold the lock nut (Figure 6-2) with a wrench
while turning the bolt clockwise to tighten the throttle lever
against the friction plate. Do not overtighten as the control
lever will be hard to move.
If the engine speed must be increased or decreased, consult
your Scag dealer.
Locknut
Bolt
Figure 6-3 Fan Belt Adjustment
Section 6
A
B
C