Hobart 6824-1, Operation And Maintenance Manual, Page: 86 / 214

g. Connect the pick-up wires to a voltmeter. The signal should read between 4 and 8 VAC.
h. If the signal is weaker than 4-V AC, check connections. If necessary, check magnetic
pick-up continuity or idle speed setting on the fuel pump.
i. Tighten the jam nut when the pick-up is properly adjusted.
j. Reconnect the wires to the terminal strip.
(4) Governor Controller Adjustment
The governor controller is located on the large panel to the left of the generator control box, as
viewed from the left side of the generator set. Before making an adjustment to the controller,
make sure the linkage between the actuator and the engine speed control is free and properly
adjusted. There must be no lost motion or “play” in the linkage. Be sure the magnetic pick-up is
producing a strong, normal output.
The controller has two control potentiometers: the SPEED control potentiometer and the GAIN
potentiometer. Make the controller settings as follows:
NOTE: A very small screwdriver is required for this adjustment.
a. With the engine warmed to operating temperature, use operating mode switch to bring the
generator set from idle to rated speed.
b. Adjust the SPEED potentiometer on the controller until the engine is operating at rated
speed (2000 RPM). To INCREASE engine speed when making this setting, turn the
potentiometer
CLOCKWISE.
To
DECREASE
engine speed when making this setting, turn
the potentiometer
COUNTERCLOCKWISE.
c. If the governor oscillates, causing the governor-actuator linkage rod to move in an unstable
manner, adjust the GAIN control on the governor controller until the oscillation and
subsequent instability is just barely eliminated. Then re-adjust the SPEED if necessary.
Governor Controller
Figure 9
OM-499
2-3 May 31/94 Revised
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