engine will not rev after being driven on low revs

[Jakobi]

Do you know where they ended up with the jetting? I had a little play with mine again yesterday and decided to switch to the Suzuki needles for the next round of testing. I still need to do some plug chops as well to establish whats going on with the main, but the weather hasn't been conductive to testing. I was thinking about taking the time to check the reeds just to be sure as well, and have all intention of double checking the PV setup as soon as I find a reason to remove the pipe.

[rubber Jonny]

Jakobi - what are you checking in the power valve? That its clean or something else?

[Jakobi]

Originally Posted by rubber Jonny

Jakobi - what are you checking in the power valve? That its clean or something else?

Making sure there is a little preload on the flapper from the governor/actuating arm. Sometimes they get a little slop and don't hold the PV flapper down completely at low rpm.

I'll probably check the spring and number of shims in the governor as well.