Adjustments
Engine Speed Adjustment
1.
brake and place gear shift lever in neutral.
Park vehicle on a level surface, engage parking
4
2.
cess to engine. If bed is raised, place safety support on
lift cylinder.
Raise the bed or remove attachment(s) to allow ac-
1
2
3.
4.
link rod on throttle bracket and center slot in engine gov-
ernor lever (Fig. 2).
Stopengineandremovekeyfromtheignitionswitch.
Makesuregovernorspringisassembledtogovernor
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.
5
3
Figure 2
1.
2.
3.
Engine governor lever
Governor spring
Spring mounting slot
4.
5.
Governor link rod
High idle stop screw
6.
cable (see Operator’s Manual). If needed, adjust accel-
erator cable.
Check operation and adjustment of accelerator
7.
ing temperature. When accelerator pedal is fully de-
pressed, engine speed should be
Start and run engine until engine is at normal operat-
1
8.
speed should be 1000 + 50 RPM. If low idle is incorrect,
adjusttheidle speedscrew onthe throttlebody toobtain
Using a tachometer, check low idle speed. Low idle
2
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
Figure 3
the bed or install attachment(s).
1.
Governor link
2.
Idle speed screw
Workman HDX
Page 3 -- 5
Briggs/Daihatsu Gasoline Engine
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