Question about Echo Pb - 413t Backpack Blower

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My pb-413t has been giving me problems it would start then die i rebuilt carb and fixed a broken suction line it seems to have spark from what shop says but it wont start at all even on ether.. i change plug also the magneto and coi look brand new it sounds like it has good compression and i dont think that is an issue so what next?

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Posted on Aug 13, 2010

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86 4.3 4BC 1500 Chevy Die rolling up to light Started up and ch of fuel and it died 3 times now no start smell fuel and quit yellow spark Have replaced cap rotor plugs wires EGR coil ECM Rebuilt carb

It sounds more like a fuel problem to me then a bad coil or spark ign the spark should be blue but its hard to see in daylight
You say you rebuilt the carb are you sure your main mixture jets are at least 2 to 3 turns out off the stops .
Try pouring fuel down the barrel fill the float bowl if it runs then dies its fuel don't let it catch unfire you should have 45 sec. of run time then adjust the the mixture screws 2 turns is base but when its is running good turn them in 1 at a time and give it 30 sec. to adjust until it starts to stumble then back it out a 1/4 two 1/2 turn then repeat on bank 2

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My pb413T want to run only on choke

Its a lean condition... Its not getting enough fuel. Check fuel filter and fuel lines, be sure to use fresh fuel then either adjust the carb or rebuild it.

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I have and echo bp250 runs but has no power change carb but didn't help is there something iam missing

Hello Margaret,
I would purchase a compression tester from a local parts store and check compression. They simply screw into the spark plug threads, then you pull on the starter rope a few times and observe the reading. You should have at least 60 psi of compression. If compression is good, I would then check spark. Spark testers are fairly cheap and are available at your local parts store too. If you just replaced the carb, Im willing to bet you will find your answer with the two solutions I mentioned. If spark is weak, the coil can be adjusted closer to the flywheel. If compression is weak, your probably looking at a new cylinder/piston and may not be worth fixing. Hope this helps. Good luck and happy wrenching!

Sep 18, 2013 | Echo Pb - 413t Backpack Blower

1 Answer

Starts dies

Fuel lines could be collapsing from being soft, mush from ethanol in gas, possibly you have wrong carb kit, or something put together wrong, fuel lines reversed, double check everything then make sure you exhaust screen is not plugged, cause this will do same thing.

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This sounds like the rubber tipped inlet needle is leaking on its seat, you can try another needle, however if the seat is pitted it will need a new carb, you need to do a pressure test on the fuel inlet of the carb, with a small pressure ( 2 psi approx ) there should be no leakage

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May be the carb needs a rebuild kit....or may be a stuck float or something of that nature...if the mower runs with the filter off then that could indicate a fuel mixture setting is set too rich...with the filter on..the engine would have more suction causing more fuel to be consumed ...thereby choking the engine out...if you know where the fuel mixture screw is, then try this...first turn the screw in all the way until it stops(be gentle, as the needle will be damaged if too much force is used). then turn the screw out 1 & 1/2 turns...this will be a good starting point for setting the carb...while the engine is running(with the filter on) slowly turn the screw ccw until the engine starts to die then turn it cw in till it starts to die...find the "happy medium" and this should solve the problem(assuming the carb does not have to be rebuilt

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Two things which may be the problem: 1) carb need to be rebuilt or replaced, and 2) you need a new spark plug. The carb with shipping is around $50.00 from sears ( ) A sparkplug can be had at any small engine repair shop and most auto parts stores for less than $5.00 Start with the cheap solution... Also make certain you have fresh gas and that the oil mix is correct.

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1 Answer

Pb413t starts........idles, but when I try to throttle up, it dies. I have tried adjusting low and high idle, but with no change. what do you suggest the issue is?

A couple of questions for you...
1. Are the plastic covers still on the adjustment screws? If so, you need to remove them. On most carbs, they are just pressed on and can be pulled of with needle nose pliers.
2. How old is this blower? If it is less than 2 years old, it probably just needs a carb adjustment. If older than 2 years, take the time to either rebuild the carb or replace it.
3. Are the fuel lines/filter still intact? Drain the fuel out and inspect the fuel lines. If the lines have broken (very common) then they will need to be replaced before continuing. If the filter has fallen off the line, then the lines must be replaced and the carb will need to be cleaned. There is a strainer inside the carb that acts as a second filter.

After you have the locks off of the adjustment screws, gently turn them clockwise until they stop. Count how many turns it took to reach bottom. From the factory, they should have been about 1.25 turns out. Set the Hi screw (closest to air filter) out about 1.75 turns. Set the Lo screw (closest to engine) out about 1.5 turns and see how it runs. If it still won't rev up to speed, turn the Lo screw out another half turn. If this is not effective, then the carb must be rebuilt or replaced.

Good luck!

Oct 21, 2010 | Echo Pb - 413t Backpack Blower

1 Answer

Runs good for about 20 minutes then dies out.

sounds lke the carb needs cleand and may need a kit

Nov 04, 2009 | Echo Pb - 413t Backpack Blower

1 Answer

Wont start, carb is clean will start with ether

It sounds like you have a clog somewhere. Fuel filter in the tank may need to be replaced. The diaphragms in the carburetor may not be as flexible and need replacing. You may have a hole in a fuel line not allowing gas to flow or introducing air to the system. Good Day.

Oct 05, 2009 | Echo Pb - 413t Backpack Blower

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