Originally Posted by
ululi1970
Hi all,
I made a stupid mistake reassembling the carb of a ST G-51, and ended up loosing the little O-ring on the HSN. For now, I just used a piece of fuel tubing over the brass knurled piece to minimize air leaks, but I would
rather have the thing fixed properly.
I would just buy the whole HSN replacement, but everybody seems to be out of stock. So I was wondering if anybody can tell me the dimensions of the o-ring, and I can order it from mcmaster-carr...
Thanks
Alberto
My Italian made G51 doesn't have an O-ring on the main needle. There might be one on the low speed needle but if it's needed, take the carb to a mom and pop hardware store and use black rubber plumbing O-rings. The good shops have a big selection so you can stick one on, test fit, and try another if needed. It's ludicrous to buy O-rings any other way unless you can get them for $.05/ea. and free shipping. Even then it's still crazy.