OK, you have what appears to be a pristeen early engine. That engine has a bushed main bering of which I have not run accross before most are ball bering.

The muffler is an after market strap on tongue muffler by the way. The carburator is a Perry Varsane which fortunately is still around. It the type used on early K&B's. The reason there are two throttle arms is that second arm was intended to use a short pushrod to a flap that rotated to cover the exhaust coupled to the throttle (in those days mufflers were not used). You can further confirm this by removing the muffler and checking in the exhaust boss there will be a small threaded hole with no bolt in the middle of the exhaust manifold.

Now back to the problem, that carb has a brass or alum colored disc on the left side (otherside from the photo) and the needle screws into the disc. It is smaller than more contemporary needles but has a tiny thumbwheel to which you can turn easily. If it is not there there will just be a tiny scrw hole in that brass/alum disc. Is it there? If not you will have to get another from possibly a fellow old club member or finding the Perry Varsane website, try a search on Conley engineering. My apologies I don,t have a link. Perhaps some else knows.

If you do have a needle I can offer further info to get you going.


John