my Echo srm-210 sometimes just takes a few pulls to get her started. Runs fine once started. Other times it might take 10, 15, 20, 25 pulls to get her started. Sometimes i give up, then the next day she might start up after just a few pulls. Spark plug is fine. Replaced the fuel mixture. Air filter is fine.

I push the prime button as instructed in manual: "4-5 times after fuel is visible"

It never has started with the choke on. I learned long ago to cold start her with the choke off. Still, when she wont start some times I go ahead and on the choke, but that never helps.

What could be wrong?

tks,
pa