zxr750 no idle

[wizzzard]

Well i finally picked up my 91 zxr750 this afternoon at 2 oclock and took it for a reasonable run about an hour just to get the feel of it.
Everything was running great until i decided on taking it out for another spin this evening and now it wont idle. I can ride it keeping the revs up with the throttle but but it wont idle even when warm.
A few other symptoms are it bogs down a little at 4000 rpm then picks back up and putting the choke on only makes it jerk and splutter.

Any suggestions would be really helpfull because the only thing i did this afternoon was wash it.

Many thanks

[Whosthedaddy]

First thing, when the bikes warm don't use the choke or it will start to cough and fart.

There is an idle screw by your right knee when riding, you may of knocked it a little. However as you mention a flat spot it could just need the carbs to balanced.

Has it an aftermarket can fitted?

Lastly, whats it like, fucking great aint they!

[wizzzard]

i did notice a black plastic screw when i washed the bike but didnt for one minute think that was anything to do with the idle. was about where my right knee should be and i turned it to see what it was . iif that works you are a star and omg they are fantastic machines

[wizzzard]

I forgot to mention it has a micron can fitted to.

[Whosthedaddy]

https://www.bikechatforums.com/files/idle_screw.jpg

[wizzzard]

You sir are indeed the daddy, it was my kackhandedness that knocked the screw and everything is idling well . Also you seem to be spot on about the carbs needeing balancing to.
Many thanks and lots of karma to you.