Hello Everyone!!
I am not a professional and a novice at best. I am working on an ECHO SRM-225. The only history I have on this weed eater is my sister in-law had it and it hasn't started since she had it. So with that being said it will not start. Will not hit at all no matter how many times you pull the string. Here's what I have checked/done so far. It has good fuel in it with now water in it. It primes every time and fuel is getting to the plug. Checked the plug and it is getting wet. I did replace the Autolite that was in there with the correct NGK it calls for. Its getting spark I know because I have tested it and seen its getting spark. So moving on to the next thing I did a compression check. With the throttle wide open and pulling the string several times the gauge only reads 60-70 psi. That's not enough to start it I assuming. Pulled the muffler off just to check the spark arrestor screen and to look at the piston ring. The screen was a little nd I cleaned it off. Looking at the piston through the exhaust port, and it looks clean and the ring looks good from what I can see. With that being said where do I go from here???? I've been down this road with a Craftsman leaf blower and replaced all kinds of things including the piston ring and that blower still will not start and has the same compression issue .
I'm looking for any and all advise and again I am not a professional. I really want to figure this out on my own and fix it.