Question about Craftsman 4 Cycle Blower/Vac

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Snowblower: fire from muffler

After about 10-15 min. of using the snowblower it belches fire from the muffler.

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Try changing the spark plug. You may be having some misfiring going on here. Is your fuel to oil mixture right?

Posted on Feb 03, 2009

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Most muffles have a small screen on them where the outlet is. It's called a Fire or Spark arrester. they clog. when they do clog it generally causes lack of RPM's and a build up of heat.

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How long has it setup? Could be varnished up, maybe broken ring, damaged needle bearings. Remove muffler an try to spray some cleaner or fuel in port to free it.

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Soak an old cloth in coca cola and wrap it then pour the rest of the coke over the area give it 10 - 20 minutes and tap it with a hammer or mallet

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My echo pb410 blower shuts down after 5 min of use i think it's the coil but which one the cdi coil or main coil?

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Snowblower smokes

Try running it for a while, also check the oil level and make sure it is not overfilled. If it is a 2 cycle make sure the oil and gas mixture is correct, most are 50/1 ratio. That is to say 50 parts gas and one part oil.

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1 Answer

Stalls out

This is usually caused by a stopped up muffler. Remove the muffler and see if this makes a difference. If it runs smoothly without the muffler then you must clean the "kook" out of it. This is done one of two ways. If you have a torch, even a portable handheld one, you can burn the muffler clean on the inside by removing it from the equipment, placing it on a burnproof surface and aiming the torch inside the muffler, letting it burn for 7 to 10 mins.
Also you can build a fire either outside if you live in an area this is allowed or in your fireplace if you have one, and just toss the muffler into the fire. This will remove the carbon buildup in the muffler, Just remember...LET THE MUFFLER COOL COMPLETELY ON IT'S OWN NOT DIP IN WATER as this will warp it and it will no longer seal tightly to the engine. This should solve your problem.

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Starts and runs fine when cold, dies after 10 to 15 min.

i would try first change gas make sure its a mix of gas and 2 cycle engine oil,second new spark plug third make sure theres nothning in the gas line hope this helps

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Smoke from snowblower muffler

Your gas to oil ratio is 32 to 1. Should cut down on smoke. replace sparkplug at same time.

Please rate this response and Good luck

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