Tecumseh Snow blower engine won't run unless on fluu choke - after it warms up.
My father in law gifted me his snow blower last fall. It's getting up there in years (Toro Power Throw 622) and has a Tecumseh engine model HSK60-76008B. It starts on first pull, and actually runs pretty well.
However, as the last "never-ending" winter came to a close, I noticed that after I ran the snow blower for a while, let's say 30 45 minutes, the engine would start to "surge" (fast, then slow, then fast, then slow) and if I put the choke very close to on full, it would continue to run (at close to full speed). Last month I got it out and cleaned things up, tightened some of the loose bolts and wanted to let it sit for the rest of the year. However, after it ran for just 5 minutes, the engine started to slowly surge, and I needed to have the choke on almost full.
I'm pretty handy with engines, but not a pro by any means. I'd like to see if I can fix this before it gets cold. What suggestions would you have for me?
In advance, thanks for the help!!