Hobart Welding Products POWERPAK OM-478 - Manual (Page 40)

OM-478 Page 36
8-6. Adjusting Engine Speed
Y Stop engine.
Engine speeds have been factory
set and should not require adjust-
ment. After tuning engine, check
engine speeds with a tachometer.
See table for proper no load
speeds. If necessary, adjust
speeds as follows:
Idle Speed Adjustment
1 Throttle Solenoid
2 Adjustment Rod
3 Throttle Rod
Disconnect throttle rod from
adjustment rod.
4 Locknut
Loosen locknuts.
Start engine, and place Engine
Control switch in Run/Idle position.
5 Throttle Lever
Push lever forward until engine
runs at idle speed. While holding le-
ver in the idle position, reconnect
throttle rod to adjustment rod. Tight-
en locknuts.
Weld/Power Speed Adjustment
Place Engine Control switch in Run
position.
6 Protective Cap
7 Locknut
Remove cap and loosen locknut.
8 Injection Pump Adjustment
Rod
Turn rod until engine runs at weld/
power speed. Tighten locknut.
Y Stop engine.
Reinstall protective cap.
Close side door.
4 8 7
1 2 3 5 6
Tools Needed:
3/8, 7/16 in
Ref. ST-121 577-B / Ref. ST-153 653-A / Ref. ST-184 780-C