. A complete Parts List is available at wwwHobartWelders.com

8-6. Adjusting Engine Speed (Subaru-Powered Units)

After tuning engine, check engine speeds with a tachometer (see table). If necessary, adjust speeds as follows:

 

 

Start engine and run until warm.

 

 

Remove rear panel and air cleaner

 

 

to access idle speed adjustments.

 

 

Remove top cover to access weld/

2

 

power speed adjustments.

1

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

4

 

idle speed screw so solenoid can

 

be moved to correct position. Tight-

 

 

 

 

en mounting screws. Be sure sole-

6

 

noid linkage works smoothly.

 

Turn idle speed screw for fine

 

 

 

 

adjustments.

5

 

Weld/Power Speed Adjustment

 

Move Engine Control switch to Run

 

 

 

 

position.

 

 

4

Jam Nut

 

 

5

Lock Nut

3

 

6

Weld/Power Speed

 

 

 

Adjustment Screw

Loosen jam nut and lock nut. Turn adjustment screw until engine runs at weld/power speed. Tighten jam nut, and then tighten lock nut.

! Stop engine.

Reinstall air cleaner, rear panel, and top cover.

2200 − 2300 rpm

(36.6 − 38.3 Hz)

3675 − 3750 rpm

(61.3 − 62.5 Hz)

Tools Needed:

10 mm

8 mm

244 032-A

OM-240 438 Page 36

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Image 40
Hobart Welding Products OM-240 438B manual Adjusting Engine Speed Subaru-Powered Units, Idle Speed Adjustment