Question D4 Pony Motor Throttle spring loaded to be at full throttle?

full throttle or Governed speed??? if it is running full throttle don't run it until it is fixed. most likely though it is just running at governed speed. the hand throttle just pulls against the governor to overcome the spring on the governor arm. mine has a small friction button on the throttle control that will hold at idle if i set it.

The governor spring wants to keep the throttle positioned such that the pony maintains governed rpm, which is about 3000rpm. So, the throttle rod is "fighting" against this. There is a spring bearing on the throttle and choke rods that is supposed to help the throttle rod maintain its position. However if the rod is lubed, or the spring is weak, it won't be able to, so the governor spring eventually pulls the throttle rod back into high idle position. Clean up the throttle rod, do not lube it, and check that the spring is sufficiently firm to hold it in place. If not, swap it out for a stronger spring

Thank you bursitis and Neil. I will look into the spring between the two throttle and choke to try and get a bite on them so they will hold. Where would I adjust the governed speed, is it the set screw? The pony motor seems to be running a bit more like 4k instead of the 3k everyone talks about.

I always thought you adjusted the high speed by changing the tension on the governor arm spring that pulls the throttle open. More tension equals higher rpm. At least thats how most other simple governors work. Adjusting governor-throttle linkage length is usually done to fix "hunting".

Yes, think you are right. I dis-remenbered that, it's been a while I guess.

Yes, it's the set screw adjusting the spring on the governor. I just put the tach on my pony and it's running 3170 high idle so I'll tweak it down a little

Thank you, all the information shared has been very helpful. I'll adjust the high idle spring set screw and bring it down to the recommended spec of 3150 using my digital tach gauge. I think taking some of that spring tension off might help with my choke/throttle control spring back as well.