25mm PHBL Dellorto set up

[Lambr62]

Hi out there,
Please see my current carb set up below which is running with a 186 Mugello kit. When I try to set the air screw nothing changes with regard to revs when wound fully in. when I wind it out 1 1/2 turns the engine stalls. The air screw currently is fully screwed in as seems better like this.Also when riding the engine revs seem to hang when slowing down and generally sluggish when I get towards 3/4 to full throttle. Spark plug is a not chocolate brown more of a Tan colour after I've been out. Any thoughts anyone? Thanks in advance.

50 pilot
60 Choke
AQ264
D22 needle 2nd clip position from top
110 main
40 slide

[Warkton Tornado No.1]

As you don't mention what exhaust you are running, you could do worse than check your setup against:

http://www.lambretta.co.uk/downloads/carbjetting.html

[Lambr62]

Hi Warkton,
Its a 42mm Ancillotti. I'll check the link. Thanks.