15-01-18, 10:56 AM
Hi Mitch,
From your photo it looks as though you're checking the float height with the floats fully down, that's to say compressing the needle valves. If so, that's wrong and explains your float heights apparently being so far out.
Check out Pat's Site and the Ivan's Installation section to see the correct procedure for checking float heights. Whatever you do, don't make any adjustments until you are 100% sure that you are doing it correctly.
If the tangs on the floats appear unbent, then they will be at the standard OE position and this should give you the correct height. I have only ever found one float (out of thousands!) to be incorrect from the factory and that was a whopping 0.5mm out ...
Yamaha built the carb coolant circuit the same way from first model to last. Yours has been disconnected by a previous owner. It matters not where the blue hoses go but by all means trace them if answers your curiosity.
From your photo it looks as though you're checking the float height with the floats fully down, that's to say compressing the needle valves. If so, that's wrong and explains your float heights apparently being so far out.
Check out Pat's Site and the Ivan's Installation section to see the correct procedure for checking float heights. Whatever you do, don't make any adjustments until you are 100% sure that you are doing it correctly.
If the tangs on the floats appear unbent, then they will be at the standard OE position and this should give you the correct height. I have only ever found one float (out of thousands!) to be incorrect from the factory and that was a whopping 0.5mm out ...
Yamaha built the carb coolant circuit the same way from first model to last. Yours has been disconnected by a previous owner. It matters not where the blue hoses go but by all means trace them if answers your curiosity.