Onan Gen won't crank

[Boat Builder]

I have a 7.5 Onan gen that will not crank when i push the start button at all three locations. The fuel pump will kick on n run but when the starter is suppose to engage it will not do anything. I can short it out at the starter n it will crank but still wont start with the start button pushed in or not. I would appriciate any feedback. It is Diesel. Thanks Bobby

[Jim_HiTek]

First thing I'd check is the starting solenoid. When you say you shorted it out, it's not clear if you're applying power to the solenoid coil, or jumping with a starting cable around the solenoid.

Then, check any fuses on the unit. Mine only has one, but if it's blown, it won't turn over.

[Ray,IN]

Onan diesel genset has a delay built-in. You hold the start button in, the glow plugs pre-heat the chamber, and only after this happens does the starter engage. To me, this means several things can cause your situation, including said blown fuse.

[Lloyd21]

Look at the reset first. So easy to over look this starter step.

[hartb1999]

mine had to replace starter