Adjusting Engine Speed On Standard Models - Miller Electric Big Blue 300 Owner's Manual

8-6. Adjusting Engine Speed On Standard Models

Engine Speed
(No Load)
Weld/Power
OM-4433 Page 38
RPM (Hz)
1880 (61.7)
Maximum
3
2
1
!
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.
Turn Process/Contactor switch to
Weld Terminals Always On − Stick
position.
1 Lock Nut
2 Adjustment Screw
Loosen nut. Turn screw until engine
runs at weld/power speed. Tighten
nut.
.
Do not set engine speed higher
than specified. Tampering with
adjustments other than shown
may affect engine warranty
3 Engine Stop Lever
!
Stop engine.
Close door.
Tools Needed:
803 563-E