Toro Workman 3000 Series, Service Manual

Page: 24 / 306

Rev. B
Workman 3200/4200 Page 3 – 4 Briggs/Daihatsu Gasoline Engine
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 (see Operator’s Manual).
3. Stop engine and remove key from the ignition switch.
4. Make sure governor spring is assembled to bellcrank
on throttle bracket and outer most slot in engine gover-
nor lever (Fig. 2).
5. Check low idle stop screw adjustment (Figs. 3, 4 and
5). Proper low idle stop screw adjustment will prevent
engine run on when the accelerator pedal is released:
A. Remove return spring from throttle bracket and
bellcrank. Disconnect throttle cable from balljoint on
bellcrank.
B. Move the governor lever to its rearmost position
and check that the governor spring is loose in the slot
on the engine governor lever. Also, check that the
rear edge of the bellcrank is against the low idle stop
screw. Release governor lever.
C. Position the rear edge of the bellcrank so it is
0.125 in. (3.2 mm) from the head of the low idle stop
screw (Fig. 4). At this position, the governor spring
must be tight against the upper edge of the engine
governor lever slot with no extension of the spring
coils. If necessary, adjust low idle stop screw and/or
governor spring adjusting rod (if equipped) to allow
correct governor spring positioning.
D. Install return spring to throttle bracket and bell-
crank. Connect throttle cable to balljoint on bell-
crank.
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. Make sure that carburetor choke is ful-
ly open.
Figure 2
1. Engine governor lever
2. Governor spring
3. Spring mounting slot
3
1
2
Figure 3
1. Governor spring
2. Bellcrank
3. Engine governor lever
4. High idle stop screw
5. Low idle stop screw
6. Return spring
2
4
1
3
5
6
NOT EQUIPPED WITH GOVERNOR
SPRING ADJUSTING ROD
Figure 4
1. Governor spring
2. Bellcrank
3. Engine governor lever
4. High idle stop screw
5. Low idle stop screw
6. Spring adjusting rod
4
3
1
5
6
2
(0.125” (3.2 mm)
EQUIPPED WITH GOVERNOR
SPRING ADJUSTING ROD