5. adjusting engine speed (kohler-powered units) – Hobart Welding Products CHAMPION ELITE OM-240 438B User Manual

Page 46

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A complete Parts List is available at wwwHobartWelders.com

OM-240 438 Page 42

9-5. Adjusting Engine Speed (Kohler-Powered Units)

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)

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