Frag

I have a Jett 50 and the high speed needle is too easy to turn. Engine vibration causes it to wander. My best guess is that there is a gasket in there that needs to be replaced. Maybe I can just put some fuel tubing around the needle and overlap onto the housing to keep it more secure.
I would greatly appreciate any other better fixes though-

kenhiraihnl

hi frag...i'm a sj50 owner...there's some info on the jett engineering forum...here's one that might apply to your needle problem...ken

"The nut holding the needle valve tension, should only be tight enough to hold the needle setting firmly. Any tighter and you would not be able to adjust the needle.

The needle "packing nut" area, should not leak at all. There are no rubber or plastic seals. For fuel to get out of there, it has to get past the needle valve threads, which is nearly impossible to do. If it is indeed leaking from the needle area, something is wrong, and you should contact Dub [email protected] to arrange for repair."

bob27s

My Feedback: (19)

Tighten the packing nut on the needle valve assembly.

This provides the needle tension and also in part provides an air seal.

Snug it down to the point you have to use a little effort with two fingers to move the needle.

Any questions... Im here in the forums (way too) often.

PM, post, email....

Bob Brassell

Frag

Thanks for the tips guys, I will give it a go in the morning. I'm glad I asked now because I really thought I was stuck with the old fuel line tubing fixer upper which wasn't really working that well[sm=48_48.gif]

Thanks again!

bob27s

My Feedback: (19)

How did things work out?

Frag

I cinched the packing nut down a quarter turn or so and thats all it needed. Now the needle has a nice secure fit with no tendency to drift about. Thanks!