After draining the tank and blowing out the fuel valve I'm able to get up to 1/2 with stable running. Choke just chokes it out as it would normally. It backfires worst when I try to rev it all the way open, about blew out my eardrum.
Re: idles but can't throttle up in reply to soundguy, 10-19-2013 14:57:57
Yes, acts as choke should up to the point that it starts to stumble (about 1/2 - 3/4) at that point the choke doesn't seem to do much. With the improvement I saw after blowing out the fuel valve, I wonder if I need to adjust the timing. I had to move the timing plate to get the top right screw out when changing points this morning. Thought I had it back in the right spot. Would it idle well and run smooth up that far if timing was out?
Re: idles but can't throttle up in reply to soundguy, 10-19-2013 16:32:58
Just loosened the screw on the left outside of the housing and turned the plate to remove the screw on the top right to remove the breaker points. After replacing I adjusted back as described in FO-4 manual. Used the same screw that was already there.
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