There is absolutely nothing wrong with the original bearings either..after all try getting the taper bearings out when they need replacing..Mr Yamaha knows best..

Thankyou for all your help in answering my enquiry..now to find a good welder in brisbane..

Hi, Can anyone tell me or know if the outer castings on a TY250A engine are aluminium or Magnesium..I need to have a few deep scratches and dents welded up..