If you remove ENTIRE assembly and send them to five star Marine they will completely rebuild everything and new motors and send your unit back for under $500.00 if boat stays in the water they offer a several step protection and re paint to factory color for an additional $100.00 lncludes a full 2 yr warranty and guarantee they are better than original because they use superior parts. Getting ready to send mine soon. Cost of motor alone is almost $800.00 from Yamaha