Miller Bobcat 250 NT, Owner'S Manual

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OM-4403 Page 36
8-5. Adjusting Engine Speed (Kohler-Powered Units)
Ref. 801 188-D / 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 Control to 10.
Remove top cover to access speed
adjustments.
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. Tight-
en mounting screws. Be sure sole-
noid 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
Adjustment Nut
5 Lock Nut
Loosen lock nut. Turn adjustment
nut until engine runs at weld/power
speed. Tighten lock nut.
Reinstall top cover.
Stop engine.
1/4, 3/8 in
Top View
Tools Needed:
2200
±
50 rpm
3700
±
50 rpm
3
5
4
1
2