Generator cranks from outside. Why won't it crank from inside?

Probably a dead battery.

make sure that a signal is generated from the crank position sensor when cranking the engine if not sensor is faulty . Otherwise check for spark at plug leads check for fuel pressure at the rail and make sure immobiliser is disengaging

When was the last time you changed the fuel filter?

Code 32 is a low cranking speed sense. You didn't mention a Spec # which would help. You say batteries are ok, but the generator is not getting enough cranking amps or voltage to maintain the control properly. Check, battery voltage, wiring, any in line isolation solenoids, check generator solenoid, also make sure there is no mechanical binding on the generator, a good way to do that is remove the spark plugs DISCONNECT THE BATTERY to prevent starting, underneath where the air intake is under the alternator is a plastic plug, remove that and you can put a socket I believe 3/4" up onto the alternator shaft and rotate the engine, if it tuns freely there is no binding, if you feel it is hard to move, check the drive train, belts, pulleys underneath (A lot of work, best to take to a dealer if it is mechanically bound)

Hi,
I have a EM5000SX. My problem is my generator will not start unless I turn the fuel selector to off. Then crank it until it does start, turn the fuel back on. Run's normal . I run this generator for my cabin every weekend.

if you can't find a bolt local and you don't want to order one try and get a piece of threaded rod and a nut

The regulator could be inside the gen. Maybe under one of the covers on the front. I'd poke around and take a cover or two off and look it over. You may be surprised!

If you need further help, I’m available over the phone at https://www.6ya.com/expert/craig_3fa289bf857b1a3c

DO NOT turn the gen. on any more...you might damage the crank or worse..
hold the crank still by pulling the starting handle and tightening it to one of the red bars(the point of this is to restrict crank movement...you can try anything as long as the crank stays still) then rotate the armature (you might need to dislocate the stator for that purpose).if it got rotated then your crank is fine...and the problem is either with the screw that holds the armature or the armature's screw hole.
that is if the armature rotated easily...if you felt or heard weird things while spinning...then am afraid something inside the engine is damaged..but if the engine is running fine then the last idea mostlikely is not whats wrong.

I had the same problem on my 1997 Coleman Fleetwood Bayside. I took out the spring pin from the crank shaft using a finishing nail and a hammer. I then put a 9/16th" socket inside to hold the nut in place while I used a pipe wrench on the outside of the crank shaft to turn it about 1/4-turn clockwise. Voila! Now it works.

The 'overcrank' error simply means it tried to start but never actually started. It cranked for an extended period. Check the fuel and starting issues you would normally check to start the engine.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/craig_3fa289bf857b1a3c