SOHC.co.uk Forums > CB350/400

carburettor overhaul and seized screws

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ricardo:
Hi. I'm overhauling the carbs on my 400-4 . I've got as far as removing the carb pistons to replace the needles. I can't unscrew the 2 small screws at the bottom of each cylinder. I've soaked overnight in wd 40 to no avail. Any other suggestions please. I don't want to buy new ones as they are so expensive. If push comes to shove I can continue to use the existing jets but I'd rather know that they were all new.

HELP
Ricardo

Bryanj:
It is better to use original jets and needles if undamaged rather than aftermarket parts

andut:
Those little screws can be a pain - you need a good, well fitting screwdriver, and I found giving the screwdriver a bit of a tap helped them free off.

I would echo Brians advice to keep the original jets and needles unless they are definitely not usable.  The jets will not wear - they just need to be clean. 

Andy

paul G:
+1on what Andy says a really good fitting screwdriver is a must.

Nurse Julie:
I think I used a little PH bit as him indoors doesn't own any JIS screwdrivers, I can't remember having any issues getting them out.

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