Re: Yamaha Carb(s) Rebuild??
With O-rings, you can clean without rebuilding most of the time. Yamaha carb kits are astronomically expensive. I know the complete carb kits for the late 80's Yamaha 220 "Special" are $170 each, and you need six of them!
Most people make a "poor boy's" carb kit, replacing just the float valve/needle and o-rings, and using a product like Quicksilver "PowerTune" to clean out the jets. It works 90+ % of the time.
If you take your o-rings to the local NAPA auto parts store and replace with generic metric o-rings, they cost under $1 each, and they are now formulated for use in ethanol-rich fuels. They have more than 200 different sizes of just metric o-rings here at my local NAPA, and about the same # is SAE sizes.
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Common Sense is learning from your mistakes. Wisdom is learning from the other guy's mistakes.
Fr. Frank says:
Jesus liked fishing, too. He even walked on water to get to the boat!
Currently without a SeaCraft 
(2) Pompano 12' fishing kayaks
'73 Cobia 18' prototype "Casting Skiff", 70hp Mercury
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