Discussion in 'The Guru's Pub' started by dk_lightning, Mar 2, 2012.
Whats this screw for?
Ive not got a clue. Its not for idle speed or fuel/air mix
Can't speak for that carb...
But the typical suspects could be :
low rpm mix
high rpm mix
But since it's not one of those...
Does it connect to anything?
Have you tried unscrewing it all the way to see what's on the other side?
ill upload a pic, 1 sec
Ok looks like this:
What motorcycle does it belong to? Short answer is it's a mixture needle valve.
I would guess it is a low/high rpm mix?
Some olde bikes had to be manually adjusted dependent if you were after top speed or low down grunt. I had a old commie bike that had a weird mix like that.
Think i got it, Its the throttle stop.. what ever that is lol.
Its a fast idle valve, so yes a throttle stop.
Its so you can set the idle tick over speed manually.
Screw it in a little and the throttle will open resulting in the engine speeding up on tick over.
The screw dont even touch the throttle tho. thats the odd thing
It could be a mixture screw the for air/fuel.
If not connected to anything then it will be for air.
It appears to be your main needle valve not a throttle stop.
EDIT: nvm main needle is in the middle not on the side.
^This...Again...>What motorcycle does it belong to???
Hyosung Cruise II 2001
Well my best guess is it's the idle adjustment screw. Mine doesn't touch either but that is only because I have adjusted my throttle cable instead.