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I picked up this McCulloh chainsaw at a yardsale a few days ago. I am not sure if it takes regular gas or 2 cycle gas...and the oil-- could you tell me the mixture? It is a gas powered 32" chainsaw. Other than the 'M U C' engravings, theonly detectable writing I can find on the saw is one number printed under the filter top/cap. thanks for any help you might be able to give. :-)

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It will take 2 cycle mix. I run all of my saws at about a 40: 1 mixture. I could likely run them at 50: 1 even but 40 is a little safer. The older saws had to have a richer mix due to the oils not being as good back then, not to mention the changes in engine technology. You can buy the 2 cycle mix at just about any hardware store. It will have a chart that tells you how much oil to mix in with the gas for a given ratio. If you really want to be safe with an older saw you might try it at 32: 1 Hope that helps you.

Posted on Jul 19, 2009


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Posted on Jan 02, 2017


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I have a Ryobi 4-cycle S430 weedeater. Do you use regular gas? If so,what type of oil do you use?

A 4-cycle engine requires regular gasoline whereas a 2-cycle engine requires oil to be mixed with the gas.
A 4-cycle engine requires regular gas in the gas tank and engine oil in another tank. Your owners manual will tell you what grade of oil to pour into the oil tank compartment of the weed-eater.
A 2-cycle engine requires regular gas plus a certain amount of 2-in-1 oil mixed with it. The oil that is mixed into the gas container and shaken together to "mix" the gas and oil before pouring into the gas/oil tank helps to lubricate the moving parts of the engine like the piston movement between the piston and the pistons' wall known as the cylinder wall. Also the oil aids in the creation of a tight seal which causes compression to occur that is responsible for optimum operation of the engine itself. It also provides lubrication to the piston rings and reduces friction as the piston rings push against the cylinder wall.
4-cycle engine oil can be purchased at any oil store like Canadian Tire/Sears/Napa Auto Parts. Just ask for oil for your weed-eater and let them know that your engine requires 4-cycle engine oil. I am sure the service clerk will point you in the right direction.
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Looks like oil and fuel is leaking or blowing from exhaust.

John - Husqvarna makes really good power equipment that seldom offers trouble. The unit you are talking about is a 2 cycle system, meaning you mix oil and gas together in lieu of having an oil sump at the bottom of the engine like 4 cycle motors have. First question, did you mix a bottle of One Mix 2 cycle oil to a gallon of regular gas to start off using your machine? If you did, then I would think your unit is badly flooded, which happens a lot with 2 cycle equipment. Try taking out the spark plug and see if the spark plug looks wet from too much fuel. If it is, leave the spark plug out for a day or so to allow the cylinder head to vent the gas fumes. Replace the wet spark plug with a new one and try to start the unit again. Here's a tip: If you do flood a 2 cycle piece of equipment (trimmer, chainsaw, blower, etc.) again, make sure the choke is off and hold the throttle trigger wide open. Pull the started cord several times until the unit starts to run. Keep holding the throttle wide open until it clears itself out. Remember, you run the equipment, it does not run you :-)

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Regular gas (not 2 cycle) was put in my Poulan Pro chainsaw

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Start it and run under light load till empty.
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Does 2 cycle oil get mixed with gas on McCulloch chainsaw or just put gas in?

Fuel/Oil Mixture
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1 Answer

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That is still what the factory recommends. Don't use a cheap 2 cycle oil, go to a Stihl store and buy their 2 cycle oil in the orange plastic bottle.

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