What does a stator and rotor look like on NorthStar 5500W generator

This shows the rotor as obsolete and I'm guessing the stator would be too. Stators are in the $200-300 price range. Probably better to just buy an new generator. Jack's Small Engine shows some stators but not your P#.

Powermate PM0525312 Generator Parts


https://www.jackssmallengines.com/Products/POWERMATE/Rotors-and-Stators

Stator is contacting the rotor, did you replace both bearings? remove the stator and look for damage on the stator and rotor laminates

If it has sat, it may have lost it's rotor residual magnetism. Disconnect the rotor field wires at the AVR or on the exciter/brushes. Note they are polaroty sensitive. Connect a 12V battery to F+ and F- (note polarity) and momentarilly power from the battery for a few seconds. DO NOT forget to disconnect the rotor/exciter field wires first or the voltage regulator will be damaged. If it hasn't sat check voltage regulator, rotor resistance, and stator resistance, and for shorts to ground.

On a motor or generator, the stator is the non-moving frame or housing. The stator holds the stationary electrical windings.



The rotating windings are on the armature or rotor. The rotor is supported by and spins in ball or sleeve bearings that are on the end bells (or caps) of the motor assembly. Power is passed to them via brushes in the stator to slip rings or commutator on the rotor.

Heres how it works.

There is a 1.stator and 2.rotor and 3.signal generator, located on the cranckshaft.
1.Stator produces A/C current
2. Rotor has magnets in it and goes around the stator and is part of the A/C current process.
Rotor also has a raised spot on the out side of it which the signal generator identifies.
3.Signal generator is a wire positioned just above the rotor to read the raised spot on
the rotor every time the rotor spins around. This wire tells the cdi to fire.

The CDI which receives the signal from the signal generator wire. Sends the signal to a coil.

The coil is energized and fires.

Always check the components in reverse order, because the stator, rotor and signal generator rarely fail.

1st, if your getting power to the coil and the coil doesn't fire , then its the coil .
2nd if your not getting power to the coil, then its probably the cdi.
3rd. Check that all the wires are making a good contact before you change your cdi, because
cdi is usually exspensive.
4th before you purchase the cdi, make sure the stator and rotor and signal generator are working.

This will get you started.
best regards
Big Al

Check for burnt stator, if that ok dismantle the generator end, remove the rotor and fully clean the rotor rings.

If you have checked the stator, rotor and brushes and they appear alright then it is probably a voltage regulator. The honda dealer can run a test and confirm the problem at very little expense. It cost me 25 dollars Canadian to preform the test and it was well worth the money because you cannot return electrical parts and they can be very expensive. Have a great day!
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Breakers could be bad, but no power to all the plugs, including the 240vac plug indicates something else going on. Either residual magnetism has been lost (has it been a while since it been ran?) and needs to be flashed, capacitor or diodes in regulator are bad, or there has been damage to the rotor or stator. There could also be a problem with the brushes on the rotor as well.

Also, if engine is turning too slow, the alternator may not kick in as well. Make sure that you are turning either 1800 or 3600 RPM, though it is a little hard to do this without electrical output. You might try playing with the governor while a lamp with a sacrificial incandescent bulb is in it. If the engine speeds up, and the bulb lights, then governor needs to be adjusted.

I have never heard that generators need to be perfectly level to prevent generator damage. It doesn't compute -- auto generators/alternators run at all sorts of angles -- so do motors. And for the damage to occur in 2 hours running doesn't sound right either.

It does sound like the generator itself is not working/generating properly, but I doubt it was caused by the slab.

Remove all wiring. Remove four stator bolts. Remove stator. remove rotor through bolt tap end of rotor us a shaft in the rotor tighten bolt in tapped hole to remove rotor.