Carby question

[Benjo]

Where do i find the mixture screw on a MIKUNI carb, could somebody please post a pic of where it is.
Any help would be much appreciated.

[solomon]

Some are unadjustable, its usually on the side in the middle

[Kaptain Krunch]

What kind of mikuni?

Generallythere is an air bleed screw, and idle adjustment. If its a slide carb you can adjust needle position for midrange, top end is adjusted by replacing or drilling the mainjet.

[Kenny_McCormic]

You can make fine idle adjustments with the air bleed screw, midrange is adjustable to an extent with the needle height, top end requires a jet swap. Large idle changes can be made with a new idle jet. Tuning these carbs can be strange to people not familiar with them, changing one jet can affect the others.

[Benjo]

not sure what kind ( I'm not a carby person) ill measure it and get some pics up soon.

[Benjo]

here's pics sorry for the crap quality (cellphone)
the choke cable (3rd pic) was like that when i got the bike, i have had the engine running fine like this but it has been running funny lately. When i say funny i mean it hates to start it sounds really "weak" when it does start running, it coughs/splutters and when i rev it, it dies. i have adjusted the idle many many times but i still have this problem.
i put these problems down to a fuel issue, if you guys think it is something else let me know, i really want this engine to run.

[Benjo]

oh yea and its a 31mm (this is the ID of the carb that goes to the engine just to confirm, if i have measured the wrong thing let me know.)

[Kaptain Krunch]

Looks like a CV carb. Take off the top cover on the carb and see if the diaphragm in there is ripped, if so that may be causing your problems.

If not, just clean the carb really well, these CV carbs are pretty fussy.

[Benjo]

Diaphragm? rubber thing, its not ripped. i guess i will just have to give it a good clean. is there any special way to clean it?

[Benjo]

i have given it a good clean and now it runs great, thanks for all of your help.

[Kenny_McCormic]

CV carbs are a real PITA, you got lucky.

[Kaptain Krunch]

CV carbs are a real PITA, you got lucky.

Agreed.

[Benjo]

i didn't realise how lucky i was :Angel_anim: