Generac Power Systems Magnum Series Operating Manual page 50

Troubleshooting
Problem
Overcrank Shutdown
Overspeed or Under-
speed Shutdown
44
Table 1 - General Troubleshooting Guide
Possible Cause
Fuel level low
Frequency setting incor-
rect
MMG130DI4/175DI4/205DI4 Operating Manual
Check fuel level in tank.
Check fuel pump operation.
Check air filter for blockage.
See the OEM engine operator's manual for additional infor-
mation.
Disconnect all loads and restart unit. Read frequency (Hz)
in the LCD window on controller. Frequency should read 60
Hz.
If frequency is above 60 Hz, engine speed will need to be
adjusted. Contact Generac Mobile Products to adjust volt-
age.
Solution
33722 D