Apologies for not being familiar with these specific engines. But often electric starters have a Bendix gear that needs to slide up (towards the flywheel teeth) as the starter spins. Then when you turn off the starter, the gear retracts, and pulls away from the flywheel.
If you can get yours to spin, but it doesn't actually engage with the flywheel, you might check that gear on the starter. Maybe the sliding aspect is stuck and needs some oil, etc.
This wouldn't be your whole problem, of course, if you also can't get the starter to run.
If you can get yours to spin, but it doesn't actually engage with the flywheel, you might check that gear on the starter. Maybe the sliding aspect is stuck and needs some oil, etc.
This wouldn't be your whole problem, of course, if you also can't get the starter to run.