Adjusting Engine Speed - Miller Big Blue Duo Pro 700 X Owner's Manual

8-6.

Adjusting Engine Speed

3/8, 7/16 in.
wrench
crescent wrench
OM-282302 Page 58
nutdriver
2
1
3
4
5
6
277061 / Ref. 800 159
Stop engine and let cool.
�
For operation at high altitude, engine
may require adjustment. If adjustment
is necessary, contact engine manufac-
turer's Factory Authorized Service
Agent.
Engine speed is factory set and should not
require adjustment. After tuning engine,
check engine no load speed with a tachome-
ter or frequency meter (see table for no load
speeds). If necessary, adjust speed as
follows:
Start engine and run until warm.
Turn Process/Contactor switch to Stick -
Electrode Hot position.
1 Throttle Rod
2 Locknut
3 Throttle Stop Screw
4 Throttle Lever
Loosen locknuts. Place engine control switch
in Run/Idle position.
Turn throttle rod until engine runs at idle
speed. Tighten locknuts.
NOTICE – To prevent solenoid damage, be
sure a 1/8 in. (3 mm) gap exists between the
throttle stop screw and throttle lever when
the solenoid is held in the energized
position.
5 Engine Speed Adjustment Screw
6 Locknut
Place engine control switch in Run position.
Loosen locknut. Turn screw until engine runs
at weld/power speed. Tighten locknut.
�
Do not set engine speed higher than
specified.
Stop engine.
Close door.
1860 rpm Max (62
1350 rpm (45 Hz)
OM-282302 Page 27
Hz)