Have a 200cc chinese quad. I think its an air cooled Lifan engine. I can hear starter motor spinning but dosnt turn engine. any advise would be apreciated

Try taking a look at the starter and flywheel while attempting to start the engine. Does the small gear at the end of the starter move forward and engage the flywheel when you try to start the engine? Could it be stuck? The small gear must move forward to engage the flywheel. Keep your fingers away from the moving parts.