20 Most Recent Generac Guardian 100 Amp Transfer Switch with Service Disconnect NEMA 3R - Page 9 Questions & Answers

it has to be hooked to a battery

call generac

Could be battery solienoid contacter fuse

It won't crank at all

Just to help answer your question better, are you talking about the GP family of generators from Generac GP-5500? Are you making any Voltage?

take the old filter along to the spares shop and see if they can match it up I suspect that the same filter will fit both engines if you want to get technical, use a verniers to measure the thread hole diameter, a thread gauge to get the thread pitch, and the outside diameter of the oil seal by going to oil filters manufacturers on line and researching their catalogues you will find pages of filters with dimensions that will match you filter I would rather just go and buy a genuine filter from a mower shop or kohler dealer as there may be a generic filter already listed.

has it got fuel in it.

Possibly blockage in fuel tank or line to carburetor? Fuel filter? Fuel turn off valve? Generator malfunction that pulls the kill switch? Owner's manual trouble shooting? No manual try for owners and repair manual http://www.manualslib.com/

Sounds like a clogged fuel filter. Or the choke is on.

Please provide the serial number of the unit and what diagram you are looking for as there are many. I will email you the diagram

There are several Generac forums available: generac forum Bing

Disconnect wires and use a Fluke meter 16, typically used by HVAC techs. (It has a capacitor charge function) You cannot use a multimeter accurately. An old analog meter on ohms, will show a reading then decay, all that tells you is it isn't open, it does not tell you if it is holding correct mfd capacitance

The circuit board controller is monitoring the engine rpm and frequency and thus controls the frequency, via the governor actuator, or stepper motor as you say. You can't adjust it. I doubt this is the problem it sounds like either engine is not delivering HP, or there is a stator short causing excessive load / current draw bogging the unit down, incorrect wiring of the stator output. Ha someone taken the stator output leads off the breaker? check the stator resistance and shorts to ground.

Check the online support of these generators, or look at this operating video for information: Generac 5000 watt 6250 surge watt generator running

If the wire that went to switch is connected together it might. It depends it that was the engine kill switch or another operations switch.