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Okay guys, this Vector 500 is killing me. Hisun 500cc engine (Chinese) About a year ago while riding slowly, I heard a tink and UTV turned off and would not start. Checked everything long story short, timing chain jumped off lower sprocket, slightly bent the cam sprocket phasers. Bought new chain and cam sprocket, set everything back to timing position, mounted chain on lower shaft sprocket and upper cam sprocket. Set the tensioner, cranked and poof, chain once again jumped off lower shaft sprocket. Again, repeated proper timing settings, remounted chain, cranked and poof again and again and again, chain keeps jumping off lower sprocket. Just to be clear, valves, piston and all components are look in great condition. Can't see shaft sprocket but to the finger behind the tight squeeze, all sprockets seem to be in place, or maybe not. Tired of fiddling with it. This was bought brand new at Home Depot and has less than 200 hrs in the past 3 years. Don't tell me to warranty it as that expired one year in. Talked manufacture out of McKinney TX and service tech was no help. My question to you, what am I missing? What next? Dumbfounded 🤔

I've blown a head gasket and am in the process of removing head. Does anyone know if the timing chain can be removed with out taking the sprocket cover off? I've found a light colored link but don't see if it can be tapped apart there or not. Reluctant to do any more tear down than I need to. Thanks.