Adjustments; Adjust Accelerator Control - Toro Workman HDX Auto Service Manual

Adjustments

Adjust Accelerator Control

Proper accelerator operation is dependent upon correct
adjustment of the accelerator control. Make sure accel-
erator control is operating properly.
IMPORTANT: If the optional four wheel drive kit has
been installed on your vehicle, additional informa-
tion regarding accelerator control adjust is included
in the Installation Instructions for that kit. When ad-
justing the accelerator control on a vehicle that is
equipped with the four wheel drive kit, make sure to
use these Instructions.
NOTE: Accelerator control for vehicles with serial num-
bers below 315000000 is shown in Figure 2 and acceler-
ator control for vehicles with serial numbers above
315000000 is shown in Figure 3.
1. Park vehicle on a level surface and engage parking
brake.
2. Raise or remove the cargo bed or other attach-
ment(s). If bed is raised, place safety support on lift cylin-
der.
3. Start engine and allow it to reach operating tempera-
ture before checking or adjusting engine speed.
4. With engine running at low idle speed (accelerator
pedal not depressed), use a tachometer to check that
engine is operating at 1300 + 50 RPM. When checking
low idle speed, the engine governor spring should be at
the end of the slot in the speed control bellcrank without
being tensioned that would open the engine throttle. If
low idle speed is incorrect, adjust engine idle speed
screw so that idle speed is correct. The engine idle
speed screw is located on the engine intake manifold/
throttle body.
5. Make sure that transmission lever is in the park posi-
tion and increase engine speed to high idle by fully de-
pressing the accelerator pedal. Use a tachometer to
check that engine is operating at 3600 + 50 RPM.
6. If high idle speed is incorrect, adjust high speed
screw on engine throttle bracket (Fig. 2).
A. Loosen jam nut on high speed screw.
B. Adjust high speed screw to obtain correct high
idle speed of 3600 + 50 RPM. Make sure that accel-
erator pedal is fully depressed when adjusting high
speed screw position.
C. Tighten jam nut to secure adjustment of high
speed screw.
Kohler Gasoline Engine
7. Fully depress accelerator pedal to the FAST posi-
tion. Accelerator pedal should have from 0.200" to
0.350" (5.1 to 8.9 mm) clearance between bottom of
pedal and floor plate when pedal is fully depressed.
A. If accelerator pedal clearance is incorrect, the ac-
celerator cable can be adjusted by loosening cable
jam nuts and repositioning accelerator cable at en-
gine. When pedal clearance is correct, tighten cable
jam nuts.
8. Recheck low idle and high idle speed after all adjust-
ments have been made. Readjust if necessary.
9. Lower or install cargo bed or attachment(s).
3
1. Speed control bellcrank
2. Accelerator cable
3. Jam nut (2)
4. Governor spring
SERIAL NUMBER ABOVE 315000000
4 3
1. Speed control bellcrank
2. Throttle lever
3. Governor spring
Page 3 − 4
5
2
7
4
Figure 2
5. High speed screw
6. Throttle bracket
7. Governor spring
6 1 2
Figure 3
4. High speed screw
5. Throttle bracket
6. Governor spring
Workman HDX Auto
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