Hobart Welding Products CHAMPION ELITE OM-240 438E - Manual (Page 41)

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A complete Parts List is available at www.HobartWelders.com
OM-240 438 Page 37
8-5. Adjusting Engine Speed
244 033-A / 244 034-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 rear panel and air cleaner
to access idle speed adjustments.
Remove top cover to access weld/
power 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.
! Stop engine.
Reinstall air cleaner, rear panel,
and top cover.
1/4, 3/8 in.
Top View
Tools Needed:
3
5
4
1
2
2200 − 2300 rpm
(36.6 − 38.3 Hz)
3675 − 3750 rpm
(61.3 − 62.5 Hz)