EZGO Marathon - Turns over but doesn't start! (another one!)

[God of Thunder]

Hello! First post and first golf cart! I picked up this very nice 1991 EZ-GO today. I - admittedly - do not know much if anything about them other than press the pedal and it goes. This one - it seems the engine spins up, but doesn't actually engage the clutch? Is the engine even coming on? I don't quite understand how these motors work (2-stroke)....is it always "on"? I took a video here, the belt seems extremely lose but I don't see the clutch coming closer to the crankshaft to tighten the belt - which I think is the problem. I am just not sure if that means the engine isn't on - or if there is a problem with the clutch area?!

I took a video - but I guess I have to be a member for 7 days to post it!

Can someone please help educate me a little on this machine?!

After some learning - and actually posting this in the electric section first - I have learned that this means that the engine is turning over but is not actually starting! I'm going to start with a compression test here soon and confirm that I have spark.