2001 3100 open generator runs but doesn't generate electricity

[lakesidevu]

I have a factory installed Westerbeke generator with very low hours(less than 25) in a freshwater boat.
I have owned the boat for 3 years, with no issues. I have run the generator 4 times this year with no issues .I started it today and it ran and pumped water for 20 minutes, but I was not getting any current out to the generator to power the boat so I shut it down and restarted it twice but no change. 
What should I be looking for?
Thanks for any advice

[hiccup]

First step--check the breakers. There are breakers in the cabin but also right on the generator itself, both DC and AC--you're looking for the AC breakers.

[lakesidevu]

I checked them today and the fuse.
All looked good and in order

[hiccup]

If you're comfortable working around high voltage, go through this step by step.  Otherwise, it's time to call a pro.

[robin.joshua]

If you're comfortable working around high voltage, go through this step by step.  Otherwise, it's time to call a pro.

I'm having the same issue. I've tried to download your troubleshooting doc but have been unable to download it. Could you get it to me another way please?

Sent from my Pixel 8 Pro using Tapatalk

[hiccup]

If you're comfortable working around high voltage, go through this step by step.  Otherwise, it's time to call a pro.

I'm having the same issue.  I've tried to download your troubleshooting doc but have been unable to download it.  Could you get it to me another way please?

Sent from my Pixel 8 Pro using Tapatalk

Try this link

bc_troubleshooting_manual.pdf