Adjusting Engine Speed - Miller Electric Big Blue 502P Owner's Manual

7-5. Adjusting Engine Speed

Engine
Speed
(No Load)
Weld/Power
OM-491 Page 28
RPM (Hz)
1850 (61)
Maximum
1 2
3
1
2
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. See table
for proper no load speed. If neces-
sary, adjust speed as follows:
1 Adjustment Screw
2 Lock Nut
Loosen nuts. Turn screws out sev-
eral turns.
3 Speed Lever
Start engine and move lever until
engine runs at weld/power speed.
Tighten adjustment screws and
lock nuts.
.
Do not set engine speed higher
than specified.
Y Stop engine.
Close door.
Tools Needed:
5/16 in
802 229-A / Ref. 191 631-A