How does this generator work ?

[Externet]

With the gasoline engine running the yellow wires are your excitation, measure across the yellow wires.

I know you have checked this but is the circuit breaker tripped?

Ron

Generator section is defunct. Its fan shattered and destroyed stator and rotor windings.

 

[Reloadron]

Generator section is defunct. Its fan shattered and destroyed stator and rotor windings.

So it's beyond economical repair?

I have an old Coleman Powermate 4000 going back maybe 30 years. That old generator saved me several times when my whole house unit failed. Briggs & Stratton 8 HP engine and your 2500 should be an 5 HP engine. Just a stator cost more than the unit new.

Ron