SOHC.co.uk Forums > CB350/400

Carburetor Overhaul

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Deano400:
Hi, can anyone advise on the following before I break something.
Would like to get the butterfly shaft out so I can overhaul all the parts. The shaft rotates freely but has little lateral movement. I am assuming that it is held in by a pin (see pic).
Is this something I have to drill out to remove the shaft? Any advise appreciated.

Nurse Julie:
There may be a woodruff key in there, some have them, some don't. Whatever is holding it would most certainly not need drilling out.
Edit, you learn something every day....Graham says if it's a pin, you may have to drill it out.😊😊
Graham says try tapping it on the other side to see if it pops up a bit enough to grab hold of it with plyers or drill a very small hole in the pin, insert a small self taping screw and pull.

Deano400:
Thanks Julie, will give it a try.

Laverda Dave:
I had the same problem when I overhauled my carbs. It was a pin and I had to drill it out. When it came to reassembly I used a suitably cut down 3mm grub screw and tapped the hole to suit. I applied a bit of thread lock to the grub screw to be on the safe side.

Deano400:
Thanks Laverda120, looks like I'll be drilling one way or another.

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