I know this subject seems to come up virtually every week, but I wondered if you could help me interpret the feel on my Lambretta. Here's the details...
It's an LI150 Series 2 with RT195 top end. I've recently fitted an Avanti Ex-box exhaust (not straight-through) and it also has a 28mm Dellorto.
This has the following:
* Needle = X7 (two clips from top)
* Slide = 40
* Air Screw = 1.5 turns out
* Main Jet = 125
* Choke = 70
* Pilot = 55
* Atomiser = AV266
It starts second kick every time, choke for 20 seconds and then ticks over fine.
When riding, it is a little "chuggy" at lower revs but really not too bad and I could live with it. When full throttle it goes very well and really flys along nicely.
The main issue is between the two and it feels a little like it is 'holding back' and I am not experienced enough to work out whether that means it is running weak at that point. I'm therefore not sure whether I should try moving the clip to the top, or even change the needle to X13?
Any other suggestions from those much more knowledgeable than me?