SkyStalker

I bought a 47 last year and it gave me a lot of problems with the carburation, it was unreliable, as it was mentioned above, the problem is within the carburator itself, I did not find any leaks in it but the problem was in the needle valve. The conical shape of the needle´s end is too irregular (machining problem I guess) so no matter how many turns you give it in or out it never keeps the same clerance with the seat. thus carburation changes with temperature and other factors. I solved the problem by installing an O.S. 4B carburator that was sitting around from a damaged engine and now it runs like a jewel, very reliable at the whole RPM range, however, not too powerful.


Remember, The one that keeps trying is the one that acomplishes.

Thanks.