6. adjusting engine speed on standard models – Miller Electric Big Blue 400 KX User Manual

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OM-4423 Page 34

8-6. Adjusting Engine Speed On Standard Models

Ref. 803 576−C

RPM (Hz)

Engine Speed

(No Load)

Weld/Power

1880 (61.7)

Maximum

Y Stop engine and let cool.
Engine speed is factory set and

should not require adjustment. Af-

ter tuning engine, check engine

speed with tachometer or frequen-

cy meter. See table for proper no

load speed. If necessary, adjust

speed as follows:
Start engine and run until warm.
Place Process/Arc Drive (Dig)

Control in Stick position.
1

Lock Nut

Adjustment Screw

Loosen nut. Turn screw until engine

runs at weld/power speed. Tighten

nut.

Do not set engine speed higher
than specified.

Engine Stop Lever

Use lever to stop engine if Engine

Control switch does not work.
Y Stop engine.
Close door.

Stop

Tools Needed: