Idle screw problems

Hi guys,

Currently having an issue with my Dellorto phvb 20.5 idle screw, first of all I noticed that somehow I'd lost the screw from the carb so I went and got another, put it on and all was fine, went for a ride and returned home to find once again the screw has gone while riding..

Ideas?

Thanks.

 

Did you fit the spring on the adjuster screw?

 

Yes of course

This is the screw I ended up getting which is a perfect replacement of the old one but don't fancy buying another for it to fall out again lol.

http://www.dellorto.co.uk/shop/phvb-parts/idle-speed-screw-assembly/

 

Suggestions anyone?

It seems the idling has gotten rough and not much I can do without a new screw

 

Have you checked the thread in the carb? It's either drill/lockwire screw or change the carb! That's what I'd do anyway.

 

Daft bodge suggestion is to use something to keep it in place?

 

Thread was fine, stuck another one in which is slightly different and a weaker spring as advised by local garage.

 

Should it have a small inner rubber washer / gromet , some do and this may snug it up or reduce vibration.
If you know the right setting then you could consider threadlock if you want to risk it on your carb?