ECHO SRM 2100 GRASS TRIMMER HAS NO POWER

There is a hole just above the grass trimming head that you can slip a screw driver into. Turn the head so that the inner and outer holes align where you can put a screw driver or other hard steel object in. Put it in there and then turn the head counter clock wise until it comes off, it may take a little effort to get it to move, but you should be able to do this with your hands. Once you get the trimmer head off, put the blade on and hopefully you still have the nut and washer accessories to hold the blade in place. You will need to place your screw driver back in the alignment hole to hold the head from spinning while you tighten the blade nut back down. Make sure it is tight, you don't want that blade coming off at ~10,000 rpm!

All echo equipment is 50:1.
The Operators Manual for that tool can be found at
http://www.echo-usa.com/Technical-Publications/Operator-Manuals/Grass-Trimmer/SRM250EE_010186-pdf

Chainsaws Trimmers Blowers Edgers and Outdoor Power Equipment ECHO USA

Parts Manual
http://www.echo-usa.com/Technical-Publications/Parts-Catalogs/Grass-Trimmer/SRM250E_010185-pdf

Chainsaws Trimmers Blowers Edgers and Outdoor Power Equipment ECHO USA

no not fly wheel maybe coil if not sparking check switch fist is on for sure or bad plug coil expessive try squrying some starting fluid in the carb check compression has to be above 90lb to start check and see if carbon has block exhaust port do all this first

If it doesn't turn over when you pull the rope it could be in the starter assembly or the flywheel where the starter pawls engage it. If it turns over then you need to check for fuel, spark, air and compression.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/kelly_69a0cf1b13789df1

Carburetor is probably gummed up inside. There are very fine needle-thin holes in the spray nozzel through which gas has to flow. if they are gummed up, you will have an engine that starts, but has no power. try to take the brass nozzel out of the bottom of the carburetor, it unscrews & may be kinda tight. but take it out & clean the smallest holes with a thin piece of wire. should work great after that.

Check Your exhaust port.. not the muffler itself the actual port. More than likely carbon and Soot has built up clogging the port significantly. It commonly does this after a few to three years of use. Usually caused by to much two cycle oil added to the gas and just carbons debris building up from combustion.

Hope this helps because it sure helped me ????????????

Did you try pushing down hard and turning @ the same time? that should do it.

Take the shaft off at the motor,see if any thing is worn there.Also,take head off of end of weed eater,check for grass or any build up in there.

Doesn't sound like piston and ring problem. Sounds more like the flex shaft that connects to the engine may have an end that is worn not allowing for the extra load when you connect the attachments. Check the ends of the top flex shaft.