20 Most Recent Onan Cummins 5.5 HGJAB-901 RV QG 5500 5500K Gasoline Generator Marquis Questions & Answers

Odds are that the ignition switch or wires are giving you the grief. Thee unit will probably be getting spark power through the starter solenoid (look for a wire there) but when the solenoid is not activated, there will be no ignition power. Take your time and trace it down. You'll get it. Cheerfuls!

Surging is fuel issue, carb gummed, pump pressure (there was a series of bad pumps recall) check with your local dealer. There was a PSB depends on your spec number.

Power to the motor switching off to ignition system check wording is correct.

Gap is 0.025" plug is a NGKR BPR4EYCummins part # 167-1638

Sound like a dead battery, or poor battery volatge getting to the unit. The clicking is fuel pump and or solenoid trying to pull in.

It is a screen on the muffler output, also remove the plug on the bottom of the muffler to remove carbon

Some Onan 4KW do not have auxiliary battery charge windings and rectifier. Are you sure you have one? If not you will need and external charger

Model spec number? be more specific please

Which motor, which generator model and Spec

Did you get this fixed? this is an old post. If not visit www,advanced-power-technologies.com (Cert Cummins Dealers) They can answer your questions.

You may have dirty rotor slip rings, or bad brushes. Field voltage must be maintained. Check those first

Contact www.advanced-power-technologies (Cummins Dealer) with exact model and spec number. Also there are cold weather options, and cold weather models. Many people buy the RS units of the net, only to find they have been stuck with warm weather models, and they don't start. Does it show a code, or a code 45.

What model? Please be more specific.

Again, what generator model? Onan have thousands. Be more specific please.

Yes

No one gives sizing. https://generatorguru.com/spark-plug-27901063/ https://www.google.com/search?q=united+power+generator+Model+GG2900+parts ..

https://cleanestor.com/how-to-clean-up-freon/?expand_article=1 This should help