I've gotten my snow blower fixed up a bit but I've got one more hurdle. But first let me give you some background info. This thing is older than I am and it sat for a while. Over the last 15 years its been used a handful of times and always started. I've actually had it for 3 seasons and I've had very little problems with it. Up until now just a leaky fuel line. I fixed that last season. This season I pulled it out of the shed and it started within 4 or 5 pulls. That was normal even on really cold days. The first snow it worked fine. The second snow it would die every so often, but if I primed it no problem it would fire right back up.
I suspected an air leak of some kind. So I decided to tear it apart and clean up the carb (since it hasn't been for a long time). I did the carb service and fixed a leaking fuel hose which I suspect was the issue. Now when I prime I can feel the fuel being sucked in, before i could feel/hear it really just sucking air. I thought I was in the clear, then after I got it back together it won't start very well.
Right now if I get the engine started it will stay running if I have it choked until is starts to choke itself out. This seems normal to me.
The problem is when I take the choke off. The engine seems to rev up extremely high. I'm not really sure because I don't really have a good way to test the RPMs but they seem extremely high. I think I found someone on this forum say that the idle rpm should be 1700 and the high should be 3800.
As it runs I'd guess that the idle is closer to 3000-4000. Now thats a total guess based on the sound of it and what I know of other small engines (not much).
My initial thought was I just needed some carb adjustment but so far I'm not having any luck. I can get it started and keep it running but it seems like it is running way too fast.
So far I've mainly tried adjusting the power screw. Its labeled as part 22 in this diagram.
I turned that down until it seems more normal but then it dies on me.
I haven't adjusted the idle screw (#24 in the diagram) really but I could try that too I suppose.
I tore it apart again and checked the throttle linkage and it seems to be hooked up correct. But I can't tell for sure.
The short version of this long story.
It starts really hard and revs up way high without the choke.
Does anyone have any ideas?