Where did this thing come from?

[les372]

well after letting her warm up the other day I was getting on to take off and heard a slight 'ping'
didnt think anything of it but noticed I had a backfire or two on a real short ride and wasnt running as well
as previous time I rode, when I got home I found this sitting on the ground where the bike had been parked
while warming up.

Anyone care to tell me where this came from and what it is?   

[scratch]

Mixture screw.

[TragicImage]

oh, thats your high speed occilatory.... doo-hicky.




I have no idea, but I"m guessing.... Carb Part?

[3imo]

air/mix screw mabob thingy

air/fuel mixture screw in the pic. it is normally covered by a brass disc.

be sure its clean and replace. screw all the way in then back 4 turns.  I think

[groff22]

Air mixture screw.

[Alphamazing]

You are SO lucky you heard that and found it!!! I lost mine a little while back and it cost roughly $20 to get the whole thing replaced. Seriously. So lucky.

[3imo]

funny, clymers makes no mention of it.  after full dissasembly, not including the air/mix screw clymers says, no further dissasembly required.

hmmmm.. why is that?

is this preset at factory and not meant to be disturbed?
anyone have a write up on how to adjust this? (I am search handicapped at the moment)

[Alphamazing]

funny, clymers makes no mention of it.  after full dissasembly, not including the air/mix screw clymers says, no further dissasembly required.

hmmmm.. why is that?

is this preset at factory and not meant to be disturbed?
anyone have a write up on how to adjust this? (I am search handicapped at the moment)

It's the air/fuel mix screw. You have to drill through brass plugs, then adjust them in our out with a flathead screwdriver. Out means richer, in means leaner.

[les372]

ahh no wonder she was running spotty, lol, I suppsoe the air fuel mix is important, haha 

[Alphamazing]

ahh no wonder she was running spotty, lol, I suppsoe the air fuel mix is important, haha 

Very much so. Be careful and only have it AT MAX 3.5 turns out. More out, and you run the risk of having it vibrate out on you again.

[Mandres]

Wow, the o-ring and washer are still there too.  Today's your lucky day man, go buy a ticket or something.

-M

[richbomb]

Should you Locktite these kind of screws in?  Or just wrench it and hope it stays?

[Alphamazing]

Should you Locktite these kind of screws in?  Or just wrench it and hope it stays?

It will stay in if you don't unscrew it too much. Like I said, 3.5 turns out maximum.

[RVertigo]

Just throw some duc tape over it.