I have a 2001 Yamaha F100. Bought used 1 year ago. After about 30 hours it blew a head gasket. Had the head shaved but still had a very slight deformity in the head surface. Head gasket blew again after a few hours. Anyone got a great idea how to deal with this problem!!! Right now I have an expensive anchor bolted to the back of my boat. Yamaha has been no help at all other than to say sorry.
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