20 Most Recent RTO Echo 25.4 Cc Backpack Leaf Blower - Pb-265lc Questions & Answers

Check the exhaust port upstream from the muffler and make sure it is not restricted with carbon. Mine was less than half way covered over with carbon. Scraped out carbon, checked muffler and screen(ok), back-blow the fuel line harness including the fuel filter and fuel tank vent and took carb apart and blew out all passages, not replacing anything and now runs fine. Would not rev past high idle before. Be sure gas is FRESH and mixed at 40-50 to 1. Hope this helps.

new spark plug is first option as when hot plug or cil pack will get hot and short out causing misfire will lead to none starter

Simply use a srewdriver to adjust the mixture screw. Its located on the carburator. Clockwise is lean, counterclockwise is rich. If you can get the thing to idle, let it warm up first. Adjust the mixture lean until it just starts to sputter, then adjust it rich 1/2 turn. Test full throttle, if it sputters, you can adjust the mixture a little more rich so that it runs good at full throttle. I would suggest steering away from investing in 2 cycle engines for a pawn shop, unless you can see them running. These little engines are very picky and they only run well if they are in good shape. If you cant get them to start easily, there is probably a lot of internal wear/damage and these engines are hard to find parts and are not cheap to fix.Bad investments would include 2 cycle leaf blowers, trimmers, chainsaws, boat motors, and motorcycles that do not start easily. Believe me, they are a headache to fix.

White smoke means water. Change fuel filter and clean tank.

If its a two cycle engine it sounds like its loading up on fuel.. Need to lean out the fuel on the carb. Not much or it will be to lean an stick the piston..

This is easy enough to check. There are 4 screws that secure the recoil starter to the engine. Remove these 4 screws and remove the starter assembly. Pull on the rope and see if the starter is operating properly. If not, go to your local Echo dealer and get a new one...they are about $30. Also try to turn the starter cup by hand to see if the engine is locked up. If the engine is locked up, remove the spark plug and try to turn the starter cup again. If it is still locked up, then the repairs would cost more than a new blower.
Good luck!

Try removing the muffler and look inside of the exaust port, you should be able to see the piston in the full opening of the port. If you can, try starting and running at wide open throttle. If it runs fine( a bit loud, so wear hering protection), then you have a plugged or partialy blocked muffler or spark arestor. Sometimes rich mixture can cause excessive carbon build up.

Hope this was helpfull. If you need further help, I’m available over the phone at https://www.6ya.com/expert/matt_8dbc24bf722649ac

i have aecho pb 260l backpack style leaf blower and it will not start. it turns over well and has spark and reasonably new fuel. any thoughts

Maybe a plugged intake. Maybe a broken impeller. Air filter partly plugged causing reductiion of power. Check those things and I think you will find the problem. Good luck...Lee

blown moter from bad gas mixture

It's eithe your coil ha heat soak and needs replacing or your fuel circuit isn't venting properly and is creating a negative pressure