Adjustments - Toro Workman HDX Service Manual

Adjustments

Engine Speed Adjustment
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. Stop engine and remove key from the ignition switch.
4. Make sure governor spring is assembled to governor
link rod on throttle bracket and center slot in engine gov-
ernor lever (Fig. 2).
5. Move the governor lever to its rearmost position and
check that the governor spring is loose in the slot on the
engine governor lever. If governor spring is tight, engine
will not return to low idle speed. If necessary, reposition
governor link rod to adjust governor spring.
6. Check operation and adjustment of accelerator
cable (see Operator's Manual). If needed, adjust accel-
erator cable.
7. Start and run engine until engine is at normal operat-
ing temperature. When accelerator pedal is fully de-
pressed, engine speed should be
8. Using a tachometer, check low idle speed. Low idle
speed should be 1000 + 50 RPM. If low idle is incorrect,
adjust the idle speed screw on the throttle body to obtain
1000 + 50 RPM (Fig. 3).
9. Using a tachometer, check high idle speed. When
accelerator pedal is fully depressed, high idle speed
should be 3600 + 50 RPM. Reposition the high idle stop
screw to adjust high idle speed (Fig. 2). Make sure to
tighten lock nut after adjusting high idle stop screw.
10.After engine speed adjustments are complete, lower
the bed or install attachment(s).
Workman HDX
4
2
5
1. Engine governor lever
2. Governor spring
3. Spring mounting slot
1. Governor link
Page 3 - - 5
3
Figure 2
4. Governor link rod
5. High idle stop screw
2
Figure 3
2. Idle speed screw
Briggs/Daihatsu Gasoline Engine
1
1