Gavin Mackenzie
XS650 Member
Recently purchased my first road bike 81' xs650 bobber. Fun little bike so far! Issue I'm running into is, the the bike starts fine, idles fine, and rides fine, as long as I don't get on the throttle (like i want to). I don't have a tacometer or speedometer so I can't really relay any speeds or RPMs to you. But it feels like what's happening is when I try to get to the top of each gear too quickly, or even when I do it slowly, it reaches this flat point and sputters a little bit. Where as I would think I should be able to give it to her as hard as I want in each gear, no ?
Anyway what I can tell you is I changed the main jets from 140- 142.5 this morning, thinking it wasn't getting enough fuel, messed around with the mixture screws ALL day with no significant changes, other than it was very slightly better when I had the screws almost 4 turns out.
I've got these fishtail shaped exhausts, and metal screened AirPods with 142.5 main jets, pilot jets (I think that's what they are) are plugged with rubber plugs.
Also checked the needle height as i had read earlier there may be 3 settings for that clip, but I only saw one setting for the needle.
Any help at all is greatly appreciated and I will document any changes I make on here to hopefully benefit the next guy. Thanks!