NOS daelim (trac) dp50 engine.
I’m confused by the design. Tomos-like at first glance, but haven’t been able to get the clutch off. Don’t see a place to use a tool. I’ve tried heat and mallet. Confused by the hole on top of the case with corresponding slot inside next to the crank. Confused by the threaded/spiral gear thing behind the pinion gears. Need to ask for help before I get frustrated and break something.