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My echo cs 440 wont start now I cleaned air filter gas filter oil filter and exhaust it has spark and is getting gas.

The spark plug is wet after a bunch of pulls

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Every saw has its own starting quirks. I've got several that require choking while starting hot OR cold and others that start without the choke when hot.... When the choke is used on some while hot, they flood immediately.

Start over fresh with a clean dry plug and after blowing some compressed air into the cylinder to dry out residual gas. Hopefully with a cold saw. Give it full throttle, full choke and try it 8 or 10 pulls. If it doesn't start, pull the plug and check it for wet gas.

If its wet, repeat the above sequence and try with half choke....if no go, do it again with no choke at all.

Somewhere you should find the 'sweet spot' for starting the saw and if not, check the brightness and the strength of the spark. You could be experiencing a faulty coil and not being provided a consistent or bright strong spark. Check the gap between the coil and the flywheel and make sure its where the manufacturer recommends. If the gap is to wide, it will deliver a weak spark or no spark at all.

Posted on Apr 13, 2015

Testimonial: "ya thanks a lot i did not think of that but ya most saws are different to start. and now that you say that I think the spark may be week. it has spark just not a solid blue. so I will check points."

  • Ben Shield
    Ben Shield Apr 13, 2015

    thanks your the best


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Posted on Apr 12, 2015

Testimonial: "ya i know its flooding but why is it flooding on me is what i need to find out"

  • Ben Shield
    Ben Shield Apr 12, 2015

    thanks alot i rilly need help with this one its getting the best of me and i dont like it



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1 Answer

I have a psa 225 echo weed eater. The engine readily starts but will only rev up using the choke lever back and forth. No power. What's my problem?

Carb or filter
. replace fuel filter in tank while checking both pickup and return fuel lines.
remove carb and disassemble cleaning all parts with carb cleaner and some soft air blow . look for small screen its round and about 1/4 round in carb these are so small that the gas that's available gells and plugs the openings . try to use non-ethonal high octane gas and use echo 2cycle oil .

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1 Answer

22' snapper walk behind mowewont start .cleaned spark plug and still wont start .swapped spark plugs from another mower that does work and the other mower starts with the snapper mower's spark plug .

You need several things for a running internal combustion engine:
  • Air
  • Spark (to start)
  • Fuel
  • Compression
  • Lubrication
  • Exhaust.
You've shown that you have a workable spark plug so far. Going from the above, consider as well
  • Fuel. Bad / old / contaminated fuel. Clogged fuel filter. If it's a motor that needs gas/oil mix, does your gas have the right oil mix?
  • Air: Dirty, clogged air filter or air inlet.
  • Spark. Is any electricity making it to that proven-workable spark plug?
  • Compression. For this one, the most likely problem (other than a toss-the-engine thing like a broken piston) would be if the spark plug is not tightened into the mount hole, allowing the air to leak out rather than compress.
  • Exhaust. Most lawn mowers will have a spark arrestor on the exhaust to make sure you don't set a dry yard on fire with your exhaust. It's often overlooked in diagnosing two-stroke engines. Make sure it's not clogged or blocked.
  • Lubrication. Is there oil of the right type, and up to a proper level on the dipstick. No oil equals way too much friction in the engine.
Good Luck!


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1 Answer

Need a manual for above

echo air filters do not have a manual nor fuel specs.

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2 Answers

Echo PB 251 won't run. replaced plug, gas, fuel filter, air filter. took carb a part, and cleaned with carb cleaner, used the compressed cleaner to clean out venturis/ports.

Wow! with all you have done it should run. Be sure the switch is on but if you are getting spark, it should be on. I would take it to the echo place for service.

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I have a echo pb251 gas blower,stop running,has spark,rebuildt carb.fuel filter,after no start,plug is wet & sparks but wont hit/start

screw air mix screws in the out like a half turn each, one controls the high end speed and one controls the idle, do idle first and adjust just a little rich then do high speed screw.

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1 Answer

Echo CS-3400 runs hot and stops, will not start until cooled down

It sounds like you have the wrong spark plug installed and/or your gas/oil mixture is incorrect. Make sure the air filter is not clogged - usually a sponge type at the air intake.

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1 Answer

I have a CS 440 chainsaw. Accidentally placed chain oil in the gas/oil chamber. Cleaned it out quickly but now the chainsaw will not run. What else can I do?

The filter, fuel hose, and possibly the carb is now full of chain oil, pull the fuel pipe off the carb, with the fuel filler cap off blow through the pipe to clear any oiltrapped. now replce the filter on the end of the pipe, go through the start procedure, if it still will not start, remove the air filter and drizzel a small amount of fresh fuel oil mix straight into the filter elbow, this should start the engine, if it stops again repeat the process until it clears itself.

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1 Answer

Echo cs-370 chainsaw wont start. running fine the day before. good spark. fuel wet at muffler. plug always wet.

Check air filter- is it clean?
Some plugs are without cilinder ok but if in place dont work. cahange the spark plug.

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2 Answers

I have a echo cs 4600 chainsaw & am having problems with starting the saw. When it sits for awhile it starts up, but when you shut it off it will not start again. I check the plug and it is wet with...

First thing to do is a new plug.Also clean the air filter.Might help?When you take the plug out.Look down the hole to see if there are any scratches on the cylinder?usually muffler side is where they will be if any.I had one doing the same thing.It was blowed up.Needed a new piston and cylinder.Hope yours don't?

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3 Answers

My Echo GT-200R will not start. The plug is clean and wet. The switch is "On". Fuel (50:1) is new. It was working 2 weeks ago. Thanks, Chuck My echo gt-200r will start and idle but any time you push...

Try cleaning the screen that is located behind the spark arrestor screen cover. This is located on the muffler. Soak it with gasoline and clean it with a wire brush.

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