SOHC.co.uk Forums > CB350/400

Carb float settings - advice please

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Nurse Julie:
I have checked so often today Paul I'm now going cross eyed  ::) ::). Thing are looking hopeful, haven't got any bits left over and I didn't have to resort to the hammer which makes a change for me  ;D ;D ;D. Fiddly job but a nice job to do though. Will see if she fire's up in a couple of weeks before I start singing my own praises.

Clem2112:
Some people set the float heights at 22mm !   >:(
It's worth checking the actual fuel levels in the bowls once they are all assembled to the rack and before re-fitting them.
This should verify that the float adjustments you made are accurate.
You can make a diy level gauge from a modified float bowl drain plug and some clear tubing.
There is no Honda data for the fuel level required but all four should be the same when measured from the joint face.

Bryanj:
Before you finish make sure that the tiny pin on the float valve actually moves and is spring loaded, sometimes a sticky one can be freed with a dose of carb cleaner.

When setting the float level the "Tang" should be just touching the pin and not depressing it at all

Nurse Julie:
Well, I have checked the float levels, re adjusted them, checked again and again and again. I think I will leave them alone now for the weekend and then fit them on the bike Monday.........after checking them again I suppose  ;D ;D ;D

Johnwebley:
setting the level is a pain,if you do it with the carbs in normal running position,its VERY tricky not to compress the little plunger,

if you invert the carbs,so the needle sits on the top of the fuel inlet,maybe its easier,either way,its a pain,

 good luck
 and I am sure all your hard work will be worthwhile

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