08-11-11, 11:12 PM
I'd be a bit surprised if Yamaha still feel obliged to pay for replacement... I'd agree they ought to, but realistically not many manufacturers (of anything) will undertake warranty repairs a decade or so after the initial sale.
Assuming they don't want to play ball, you can:
a) pay someone to do it
b) do it yourself
c) buy a replacement engine and swap it
or
d) simply weld the nut onto the shaft.
I did that on my original engine since I couldn't be bothered with the hassle of losing the bike while the shaft was replaced under warranty. Sounds brutal, but it's cheap and can be done several times, just cut through the weld with an angle grinder when it's time to replace the chain and sprockets.
Assuming they don't want to play ball, you can:
a) pay someone to do it
b) do it yourself
c) buy a replacement engine and swap it
or
d) simply weld the nut onto the shaft.
I did that on my original engine since I couldn't be bothered with the hassle of losing the bike while the shaft was replaced under warranty. Sounds brutal, but it's cheap and can be done several times, just cut through the weld with an angle grinder when it's time to replace the chain and sprockets.