OM-175 104 Page 16
6-5.
Adjusting Engine Speed
Ref. ST-801 188-A / ST-801 209-A
After tuning engine, check engine
speeds with a tachometer (see
table). If necessary, adjust speeds
as follows:
Start engine and run until warm.
Turn Fine Adjust control to 10.
Idle Speed Adjustment
Move Engine Control switch to
Run/Idle position.
1
Throttle Solenoid
2
Mounting Screws
3
Idle Speed Screw
Loosen mounting screws. Adjust
solenoid position so engine runs at
idle speed. If necessary, back out
idle speed screw so solenoid can
be moved to correct position.
Tighten mounting screws. Be sure
solenoid linkage works smoothly.
Turn idle speed screw for fine ad-
justments.
Weld/Power Speed Adjustment
Move Engine Control switch to Run
position.
4
Weld/Power Speed Adjust-
ment Nut
5
Lock Nut
Loosen lock nut. Turn adjustment
nut until engine runs at weld/power
speed. Tighten lock nut.
Stop engine.
2200
±
50 rpm
3700
±
50 rpm
1/4, 3/8 in
Tools Needed:
3
5
4
1
2
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