Question about McCulloch 16 Inch Gas Chain Saw MCC1635AK

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Chain saw won't start after not not being use for 10 years.

I mixed up some fresh gas mix , the tank was emety, filled it up.
Pulled and pulled, nothing. Pulled the spark plug and there was spark.

Thanks
Jack

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  • jammatson May 06, 2010

    Thanks, I am a shade tree machinic , so I will need to get the manual the see where the parts are you said I should look at.



    Thanks

    Jack

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Chainsaws are a 2 stroke engine, when you use mixed fuel in a saw or any type of two stroke machine and let it sit, the oil in the fuel will varnish the inner workings of the engine.Sort of like eating lots of fat foods and getting clogged up aterys. Carburators are notorious for clogging up on 2 strokes. Most people mix there gas a little rich to be on the safe side so when you let this mixture sit without the engine running it through it will clog up everything. This is why when you are done for the season you should empty out the fuel tank and then start the engine , this will burn all the remaining fuel up and nothing will be there to clog it up over the winter. So with a saw thats sat for 10 years. Shes clogged! Get a carb rebuild kit, clean everything with raw fuel, no oil. All the smallest little holes will be plugged up"Jets"Use air to blow through everything.Then mix some new fuel up and it should work fine. Another thing to watch for with all of this is, inside the fuel tank, if fuel sits for too long it will harden up the fuel line. Sometimes it will actually break off inside the tank. Preventing the engine from getting fuel.If you use a little flash light you can usually see inside the tank and check this as well. Hope this helps. Have fun!

Posted on May 06, 2010

Testimonial: "Thanks for the help. I wll be trying the gas tank thing first. "

  • fergesonmich Aug 08, 2011

    Do you have a picture of the fuel line routing

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When you pulled the spark plug, was it wet? If not, then the fuel system is not putting fuel into the engine. Try spraying some fuel into the plug hole and attempt starting again. If it pops a few times, then look to the carburetor and the fuel filter in the tank. The filter is combined with the outlet port at the tank. Make sure the air cleaner and muffler are not plugged. Make sure the choke mechanism closes the choke plate fully and that the throttle plate opens fully when the throttle is pulled. Hope some of this helps!

Posted on May 05, 2010

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  • drallim May 06, 2010

    On Macs, the engine case splits vertically. Remove the rear case to expose the oil and fuel tanks. The only fuel line is a short length from the bottom of the fuel tank out to a port in the engine case. The tank just pulls off when the fuel line is removed (it is plastic line, so it may be hard to remove--replace with the proper-sized rubber line obtainable from a saw service shop). To get to the carburetor, you have to remove the front case--many bolts and screws in many locations, plus dealing with the throttle mechanical connection is a nightmare. See if you can get fuel to run out of the tank port first before tackling the carburetor--which may not be in trouble. I have a small Mac that is nearly 20 years old, has had fuel in it at all times summer and winter and never fails to start with more 4 or 5 pulls. Good luck!

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Easiest way to replace fuel filter and fuel lines in a mac 3214 32cc?

Posted on Aug 30, 2010

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