Bought second-hand from Japan while on holiday,came with flywheel and counter weight,not sure model( max or pro),tried put it in but the first motion shaft would go into the clutch, got about 8-9mm left and its stuck, could'nt push in any further,do i need to take anything off or something?any help would be appreciated.thanks.

 

you going to need to either take pictures of this, or describe it a bit better