I recently purchased a nicely refurbished Cub 129 (love it). Apart from a few annoyances, it is in great running condition.
The chief annoyance is the PTO engagement disc. The three pronged disk fails to find its way back into the 3 slots located on the engine once it is running(forgive my ignorance re: specific part names -- I have a manual on order). Therefore, I have to disengage the PTO manually. I have tinkered with the PTO engagement lever set-up extensively but to no avail.
I believe that the issue is that the 3 prong disc seems to be at an angle so that only the top two prongs engage (I think that all 3 should engage). Either that, or perhaps the slots on the engine are warn down too much. Also, is the disc supposed to "float" between the PTO lever disk and the engine? It seems that the only thing keeping the 3 prong disk from flying off is the PTO lever aparatus itself.
Any advice would help.