sparker, something seems to be keeping the vane from moving freely. I suggest you temporarily remove both governor springs, then try to move the vane with very light finger pressure. If there is any resistance whatever, the vane or linkage is physically stuck. Disconnect the link between the air vane's arm and the throttle, and see if the vane is free. If it is, your link between air vane arm and throttle was stuck. If the vane isn't free, loosen its pivot bolt and see what is causing it to stick - the pivot bolt might be too tight.

With regard to your earlier comment that the use of a second governor spring is on a "later model", and therefore applicable to your engine, there seems to be a mismatch of information. As far as I can tell your ignition coil does not have the Magnatron fitted, so your engine is pre-1982.

Post-Edit: I was wrong, the ignition coil is clearly a Magnetron, so the engine is post-1982 (unless the Magnetron had been fitted later).

The one you showed with the second governor spring has a Pulsa-Prime carburetor, not a Pulsa-Jet like yours, and is therefore at least ten years newer than yours, probably more than that. This makes it seem unlikely that your engine had that second, small-diameter governor spring when it was new, or that it should have it now.

Last edited by grumpy; 19/03/13 04:39 AM. Reason: Post edit to correct original text