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I have an old echo weedwacker that runs excellent for 10 minutes then dies when the trigger is squeezed until it cools down again. I checked all the obvious please help

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Sounds like a fuel problem, first check the fuel tank vent, thats the little whithe thing on the 3rd line comming out of the fuel tank, make sure you can **** air thru it
then check the fuel line for cracks, and of course the in tank fuel filter are clean. If none of these help take the carb apart and see if the screen on the metering diaphragm is obstructed with dirt. These are the most common solution for your problem. On the wild side, if it dies again, remove the spark plug as soon as it happens and see if you have lost spark, some of the ignition modules have a heat sensor in them that will short and stop the spark when it gets hot, if thats the case you will need to buy a new module, Not a common broblem but I have seen it a few times, Echo is probably the best built 2 cycle on the market..

Posted on Nov 13, 2009

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Suggest that you check compression, exhaust screen, remove muffler and inspect cylinder and piston. Then start, and when it quits, check for spark and the condition of the spark plug.

No-start
Basics to check:
1) Spark plug - brown or dark brown - OK
a) is it carbon or fuel fouled (black and carbon deposits)
b) is there spark

2) Muffler remove for inspection
a) exhaust screen clean or plugged
b) inspect cylinder wall/piston as the flywheel is slowly rotated
3) Check cylinder compression

Ignition related issues due to time and heat
a) Flywheel looses magnetism (not too common, but does happen)
b) Ignition switch or circuit breaker overheating
c) wire connection on plug-ins to switch or wire harness
d) points/condensor breakdown
e) ignition/armature coil
f) spark plug wire
g) electronic trigger/coil overheat
Fuel starvation - 'lean fuel' condition
Basic things to check:
1) spark plug
2) spark arrestor in muffler
3) fuel lines and tank filter
4) turn adjustment needles out (counterclockwise) 1/4 to 1/2 turn
Chain Saws:
5) check impulse tube and intake boot for cracks or leaks
*if all of the above are OK and/or do not improve performance then:
Remove Carburetor
6) replace gaskets/diaphragms
a) use a spray carb cleaner to clean jets, holes, and body of carb
b) fuel pump diaphragm goes against the carb body,
then the gasket towards the outside
c) metering gasket goes against the carb body,
and the diaphragm goes towards the outside

Posted on Nov 13, 2009

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1 Answer

I have a honda power washer and it will run for about 30 minutes and then start losing pressure,gaining pressure back and losing for about a minute until dying, if i let cool off it will be good for...


Since you did not include a model number.. I have to speak in generic terms. On the output side of the pump there is a high pressure / unloader / bypass valve. There is probably corrosion on the stem of the unloader and the corrosion is causing the stem to stick in the brass stem guide. Remove the unloader valve assy from the output side of the pump. Clean off the corrosion with some scotch brite and the GREASE the stem. (Make sure the input water supply hose is connected but NOT on.) Dump about 2 oz of engine oil into the hole where you removed the unloader valve. Place a liberal amount of grease in the hole where the unloader was then install the unloader valve.

Start the unit but do NOT turn on the water for about 1 minute. Squeeze the power wand knowing full well your going to get oil and grease out of the end of the nozzle for about 45 seconds. Begin cycling the wand trigger rapidly.... multiple times. Your forcing the unloader valve to work.... Then try normal use.

I Not only work on these I have an Excell 2400 with the honda 5.5hp GX 160 engine that just this last weekend I had to do this exact procedure for the same reasons.... It is working like a champ again and it was new in 1997.

Thanks for choosing FixYa,
Kelly

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spill valve is stuck and needs to be cleaned and greased common problem....also check all connections for blockage in line

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Hello, I have a couple year old brigs and strattion upright pressure washer. It has always ran great untill recently. It will run for a acouple minutes before dying, like it is starving for fuel. i give it...


Check the oil level in the engine itself. Verify that your oil reservoir is full, then try again.

You may also want to refer to the owners manual for other trouble shooting tips. Click this link to go to your manual.

http://www.pressurewashersdirect.com/manuals/020244%20manual_2.pdf

And remember
Automatic Cool Down System
(Thermal Relief)
If you run the engine on your pressure washer for
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The high speed needle valve needs adjusting and it takes a special splined tool to adjust it. I currently am trying to find where I can purchase the tool to adjust the high and low carburator screws.

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This is as simple as it gets. If the carb is 10 years old and has not

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If your carb has limiters which will only allow the adjustment

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1 Answer

The weedwacker dies when I squeeze the throttle trigger


You need to clean the carburetor. Remove and disassemble carb. Use a den Tek Brush, (used to clean between teeth), to clean the small portals in carb. Use a carb. cleaner while cleaning. Make sure the small screen in carb. is free of debris. The smallest of paticles can cause the carb. not to run right. Reassemble the carb. and try starting. If there is no change, then you will need to buy a carb. kit for your trimmer. Replace all appropriateparts: gaskets, diaphragm, needle valve, and the small screen.

Jim

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