20 Most Recent Generac Guardian 200 Amp Transfer Switch with Service Disconnect NEMA 3R - Page 9 Questions & Answers

Try carb cleaner an gas mix just the float bowl or filter it is gummed up

check/replace the oil level switch as it would be the unit that is shutting down the engine as it reads a oil level fault they are known to be problem point

http://ec1.images-amazon.com/media/i3d/01/A/man-migrate/MANUAL000031765.pdf page 8 and page 32

If you replaced starter and it does not crank at times, then perhaps the new starter has bad spot on commutator and when the motor comes to rest on one of those areas the brushes do not transmit power to the motor. Those rings should be squeaky clean. Then check for a bad or intermittent connection not allowing motor to get electricity. Next time it does not crank check to see if you have voltage at motor.

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