echo srm210 string trimmer bogging down

[The motor guy]

well my echo trimmer keeps on bogging down. It idles perfectly and it will go all the way to about 3/4 throttle and then it boggs down and won't put out any power. It worked fine the week before. I took the carb off and cleaned it out. Still does the same thing. I may have missed the clogged jet though since the carb was completely different than the other echo carbs i've taken apart and cleaned. This trimmer probably has 2000hrs on it so I don't know if it finally lost enough compression to just not run right or if it's still a carb problem. Anyone know what's wrong?

 

[Drew99GT]

Have you tried adjusting the carb jets? If your Echo is anything like my ancient Homelite, it might need to be leaned out up top. Does it have 2 carb screws, or just one?

:edit: I mean 2 seperate carb jet screws for acceleration and full throttle, separate from an idle jet for idle air fuel and idle rpm?

 

[The motor guy]

It actually has a single adjustment screw. The kind that has a plug that has to be removed. I leaned it out as much as possible and i got it to run ok for like 15 minutes but then it went back to bogging down running rough. I pretty much leaned it out as far as it would go. lol. Probably burned the piston. Do you think I missed the clogged jet when I took it apart the first time? I adjusted it by holding the throttle wide open and turning the screw and then listening to the engine btw. I guess it seems like it's not getting enough fuel.

 

[Drew99GT]

You can't possibly have done to weed eaters what I've done to them growing up! I doubt it's ruined.

If it seams like it's not getting enough fuel, open up the jet. With one screw, I wouldn't try and adjust the mixture based on wide throttle alone. get it to where it seems to act normal based on idling and snapping the throttle and holding it.

 

[Errtt]

Originally Posted By: Drew99GT
You can't possibly have done to weed eaters what I've done to them growing up! I doubt it's ruined.

If it seams like it's not getting enough fuel, open up the jet. With one screw, I wouldn't try and adjust the mixture based on wide throttle alone. get it to where it seems to act normal based on idling and snapping the throttle and holding it.


Yes - keep snapping open the throttle and adjusting until it torque's up and scream like never before.
Make sure fuel is fresh and not from a forgotten jug that was tucked away a few years back

 

[Errtt]

^ maybe add a shot of fuel system cleaner in the tank just in case

 

[wayne50]

Just a guess, but it may be time for new carb. diaphragm. That fixed my Homelite.

 

[The motor guy]

i've already tried adjusting it. didn't do anything.

 

[punisher]

Take off the muffler and clean the crud out of the exhaust port, examine the piston for scoring, verify muffler isn't clogged.

Complete carbs are $35 on ebay, kits ~$12.

Never ever lean out a 2 stroke unless absolutely positive you have a clue what you are doing.

 

[Rick65]

I've found the Gunk one gallon carb cleaning kit from the auto store cleans better than anything I've used before. 30 minute soak, then hot soapy water rinse, clear rinse and dry with compressed air. Gave new life to a carb I was going to replace.

 

[The motor guy]

Originally Posted By: punisher
Take off the muffler and clean the crud out of the exhaust port, examine the piston for scoring, verify muffler isn't clogged.

Complete carbs are $35 on ebay, kits ~$12.

Never ever lean out a 2 stroke unless absolutely positive you have a clue what you are doing.


I may try this. I suppose it's possible the spark arrestor could have carbon clogging up the holes. I'll try that and also try that gunk stuff the other poster was saying. I think soaking it is probably the best way to get it cleaned out. I've already bought a new trimmer but I would still like to get this one working again as a backup.

 

[afoulk]

I've used something similar, called chem-dip I think. Works great.

 

[tig1]

Originally Posted By: motor_oil_madman
Originally Posted By: punisher
Take off the muffler and clean the crud out of the exhaust port, examine the piston for scoring, verify muffler isn't clogged.

Complete carbs are $35 on ebay, kits ~$12.

Never ever lean out a 2 stroke unless absolutely positive you have a clue what you are doing.


I may try this. I suppose it's possible the spark arrestor could have carbon clogging up the holes. I'll try that and also try that gunk stuff the other poster was saying. I think soaking it is probably the best way to get it cleaned out. I've already bought a new trimmer but I would still like to get this one working again as a backup.


I've been using Amsoil Saber 50:1 in my Echo weed wacker and it's 10-12 years old. So far I have had no carbon build up, almost no smoke, and the engine still runs great. This oil really works well in 2 stroke engines.

 

[Warstud]

Since it runs...why not just run some Chemtool or Seafoam in it before tearing it apart.