Adjustments; Adjustments; Adjust Engine Speed - Toro Workman HDX Service Manual

Adjustments

Adjust Engine Speed

1. Park vehicle on a level surface, engage parking
brake and place gear shift lever in neutral.
2. Raise the bed or remove attachment(s) to allow ac-
cess to engine. If bed is raised, place safety support on
lift cylinder.
3. Allow engine to reach operating temperature before
checking or adjusting engine speed.
4. With engine running at idle speed, use a tachometer
to check that engine is operating at 1500 + 50 RPM.
5. If idle speed is incorrect, adjust idle speed screw
(Fig. 2).
A. Loosen lock nut on idle speed screw.
B. Adjust idle speed screw to obtain 1500 + 50 RPM.
C. Tighten lock nut. Recheck idle speed.
6. Increase engine speed to high idle. Use a tachome-
ter to check that engine is operating at 3600 + 50 RPM.
7. If high idle speed is incorrect, adjust high speed
screw on fuel injection pump (Fig. 3).
A. Loosen lock nut on high speed screw.
B. Adjust high speed screw to obtain 3600 + 50
RPM.
C. Tighten lock nut. Recheck high idle speed.
Briggs/Daihatsu Diesel Engine
2
1. Speed control lever
2. Idle speed screw
2
1. Speed control lever
2. High speed screw
Page 4 - - 4
3
1
Figure 2
3. Lock nut
1
3
Figure 3
3. Lock nut
Workman HDX--D