Onan 4K generator shuts off
Helped a friend check out his 5 year old onan 4K generator. It has low hours less then 100 for sure. He has been dealing with this problem for over a year. It starts easily but won't take much load. It will run with a light load less then 10 amps for a good while. I put a larger load on it the microwave and the a/c unit which brought the amps too 23 amps and 115 volts and in a minute it shut off. The generator is rated for 33amps so it should have kept running. The fault code showed #38 which is an excessive load code. Any ideas is there anyway to set the point at which it shuts down at 30 amps rather then 20? I plan on checking the fuel pressure at the carburetor under load but I doubt it will be a problem. This is a 4 lb pump I presume as all onan pumps that I remember for many years are 4 lb.