143bhp

[ogri48]

While you have the carbs out, I also recommend that you replace the O-rings on the float needle valve seats.  These harden and start to leak as they get older, and most are old enough to be at that stage now.  Do it while you have the carbs on the bench and save having to pull them again any time soon.

Mike should I order proper Yamaha o rings/carb rebuild set or just use four that are the same size mate. just read the whole job from start to finish on pats page along with the addendum you added, it actually all seems pretty straightforward. I'll take the carbs off in the lock up, but do the work in the kitchen, on the table under good light..