What to know before troubleshooting a Generac generator?

The first thing I recommend, before you start working on troubleshooting a Generac generator is to read the manual thoroughly. The manual cover directions how properly to install the unit, safely operate and handle the unit, and much more. The manual will also show you how to avoid situations such as electrical, fire and explosion hazards.

Is there an issue with my home generator?

Hi folks, I’m having an issue with my home generator surging and pulsing. Its a coleman 5000 with a 10hp Techumseh engine. I bought this unit used about three years ago with a dirty carb.

What causes a generator to start surging power?

There are actually numerous causes for generator surging, including: 1 Incorrect fuel use, fuel levels and fuel quality in gas/oil generators. 2 Failing capacitor or other components. A failing, damaged or aging capacitor can create wild fluctuations in the regulation of power supply and distribution. 3 Poor maintenance. 4 Age. …

Why is my generator not working in my RV?

You have a switch on the RV called a transfer switch, it will let the power from the shore power cord go to the main panel when plugged into shore power, then it will automatically after a short delay transfer power from the generator to the main panel. You transfer switch is not working.

Who are the Authorized Service Centers for Generac?

Our Authorized Service Centers provide parts, service and information on Generac equipment, regardless of where it was purchased. Authorized Service Centers are staffed with trained technicians supporting all aspects of the Generac portable generator line.

Where is the fuel filter on a Generac generator?

Replaces: 66386 066386 0663860SRV Briggs… Generac 087769 fuel filter screws in back of electronic fuel pumps used on RV generators by Generac , Onan, and others that use the Facet electronic fuel pump with 1/8″ pipe threads. Has a…

Why is my generator not generating a spark?

If the spark plug can’t generate a spark, it won’t ignite and power the generator. Take out the spark plugs and inspect them. If the spark plugs are damaged, replace them. If they’re covered in carbon build-up, you can try cleaning them and replacing them.

What happens when you turn off the genset?

This is what happens when you stop your genset. Pressing and holding the stop switch for a few seconds causes the control board to cut off the 12 volts to the ignition and fuel pump (and/or fuel solenoid valve) causing the engine to stop. On models equipped with magneto ignition, the control board grounds the magneto kill circuit.

Why does my Generator keep failing to start?

Closer tolerances within the fuel systems to meet today’s emission requirements make fuel systems more susceptible to air affecting startup. This is not as common with older generators — many of which may have a leak in a line or check valves that are not properly holding the fuel in the engine.

What do I need to start my Onan generator?

Getting the Engine Running Before any evaluation of the controls, regulator or generator can proceed, the Onan engine must have oil and fuel, be in running condition and the 12-volt battery charged. The electronic governor, 151-0752, on Models BGM and NHM, Spec B and later, must be functioning properly.

What do you need to know about an Onan generator?

Before any evaluation of the controls, regulator or generator can proceed, the Onan engine must have oil and fuel, be in running condition and the 12-volt battery charged. The electronic governor, 151-0752, on Models BGM and NHM, Spec B and later, must be functioning properly.

What should the KVA of a three phase genset set be?

Three- phase genset sets are usually rated in KVA at 0.8 power factor. Starting power factors of motors vary from 0.3 to 0.5 and increase towards unity as the motor accelerates and its KVA demand drops.

What happens when the generator is first started?

When the generator is first started, the regulator receives the field flash voltage from the control board and applies it to the generator field (rotor) to initiate AC voltage buildup in the stator.