I have a 3KW diesel gen set, MEP-701A which has been repowered with a new Yanmar diesel engine, and could use some help.
I bought it over a year ago and it has been sitting. I finally decided to see what's actually wrong with it today. So I pulled most of the noise suppression kit off.
1. Battery is dead, so used my handy dandy slave cable off my M1009 CUCV. CUCV was not running.
2. It has oil.
3. It has fuel.
4. It has 392 hours on it and appears to be in otherwise excellent condition.
If you turn the knob to start it fast, it will begin to start, the DC Breaker pops and it
shuts off. If you turn it at a normal rate it just pops the DC Breaker.
I noted that it has a solenoid on the side of the engine which operates the throttle.
When you go to start it, this opens the throttle but as soon as the DC Breaker pops
it closes. However, I did note that if you manually hold the throttle when starting the engine fires right up and runs (even though the DC breaker pops). The gen set gauges also indicate it is producing power.
Let go of the throttle and it shuts off.
I rechecked the oil after running it and it appeared a bit foamy. So I'll need to change that if I can get it working properly.
I cannot see anyplace where a wire might be shorting out against anything.
If anyone could show some mercy on me I'd appreciate it. The only manual I have seen simply says to send it in for repair if the DC Breaker pops.