Motorcycle Questions? Ask a Mechanic.
Disconnect the battery and the starter wires.
Remove the battery and the air breather.
Remove two smallest bolts from back of the starter.
They are long bolts, slide them out.
Remove the big brass philips head screw(s) on the starter's side.
Slide the whole black casing backwards.
Within the casing their will be two allen or hex head screws.
Remove the allen screws and the starter should pull out.
These starters were very trouble prone but new ones should be available online. They are a combination starter and generator and they
were too complex and not reliable. It helps to use the kickstart
to get them over compression so the starter can turn the engine.
It may have other problems internally though.
Here is some info that might help: