143bhp

[ogri48]

all good advice and much appreciated mike. I think you'll be sick of hearing from me come Christmas when I tackle it lol..

[Falcon 269]

Probably LOL!

[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..

[Falcon 269]

You'll probably find that you can't get the O-rings separately from a Yamaha dealer, as they're included as part of a carb rebuild kit that also has the float valve needle and other bits in it.  I guess a friendly dealer might let you have suitable O-rings from his workbench stock, though.

I just ordered some online from an ebay listing:

https://www.ebay.co.uk/itm/7-5-x-1-5mm-Viton-75-ORing-50x/141201447601?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649

[ogri48]

aha mate that will do nicely! and good call..my ageing vfr750 (my commuter before the thou) had a rear pot fill with petrol because one leaked. Unwittingly went to start it next morning and the hydraulic lock bang convinced me i'd knacked a con rod! it was ok as it happens, but gave me a turn thinking id buggered the engine for the sake of a o ring...

[slimwilly]

That "Falcon is such a helpful man " true