Craftsman Chainsaws Use This Type of Gas and Oil Fuel Mix

Making sure you’re using the correct gas and oil combination is an integral element of routine maintenance for a long life of reliable service from your chainsaw.

When a Craftsman chainsaw stops starting or running, poor gas or fuel quality is usually the blame.

Two-cycle Craftsman chainsaw engines require a fuel-to-oil ratio of 40:1.

  • Unleaded gas with no more than 10% ethanol and a minimum octane value of 89.
  • Superior 2-cycle oil that meets the standards set by ISO-L-EGD and JASO M345 FD.

The blending of gas and oil should take place in an open location with plenty of ventilation, apart from any flammable materials.

Craftsman Chainsaws

Blend of Gasoline and Oil for a Craftsman Two-Cycle Chainsaw

The 2-cycle engines found in Craftsman chainsaws require a fuel blend of gas and oil.

Don’t destroy your Craftsman 2-cycle chainsaw by putting undiluted gas in it.

When used in a two-cycle engine, straight gasoline causes the engine to seize up and stop working because of the extreme dryness of the fuel. If oil isn’t mixed up with the fuel, the engine won’t have the lubrication it needs to function smoothly.

Tools of the Trade: Craftsman Chainsaws A 40:1 ratio of gas to oil should be used as the fuel source.

Your Craftsman chainsaw features a 2-cycle engine with a single fill port requiring a 40:1 mixture of gas and oil. Therefore, the ratio of gasoline to oil should be 40:1.

Specifically, 3.2 ounces of oil are needed to produce 1 gallon of gasoline. To find out how much oil you need add to your unleaded gas, use this handy chart.

Gas to Oil Mix1 Gal Gas2 Gal Gas2.5 Gal Gas
40:13.2 oz Oil6.4 oz Oil8.0 oz Oil

Craftsman Chainsaw Fuel Type

Never use stale gas in your Craftsman chainsaw. The breakdown of gas with age makes it less explosive.

Ethanol-laced gas causes varnish to form in the fuel system because it draws atmospheric moisture. Carburetor and fuel system components will become clogged with gummy deposits, reducing their efficiency.

Because of this, there’s a chance that your Craftsman chainsaw won’t start, will die, or won’t have as much power as usual.

Unleaded gasoline having an octane level of at least 89 and no more than 10% ethanol is recommended for use in Craftsman chainsaws. This fuel can be purchased at any regular petrol station. Combine this fuel with a premium 2-cycle oil.

Never put your vehicle in danger by running gas with an ethanol level higher than 10%, such as E15 or E85. These fuels have between 15% and 85% ethanol content. If possible, use fuel with no or very little ethanol in it.

Oil for Craftsman Chainsaws

Premium 2-cycle oil meeting ISO-L-EGD and JASO M345 FD standards must be used in Craftsman chainsaws. The MTD 2-cycle oil is effective. High-quality oil is also available from Briggs and Stratton.

Keep in mind that 2-cycle oil and motor oil are two entirely different things. Avoid using regular motor oil in your chainsaw.

2-Cycle Craftsman Premixed Fuel

One viable fuel choice is a pre-mixed fuel like TruFuel, which already includes an ethanol-free gasoline and oil. Fuel that is already stored and waiting to be used is a huge time saver.

The fuel issues that come with using ethanol-based fuel will also be eliminated.

Formula for Blending Craftsman Chainsaw Gas

Find out how much fuel mixture you’ll need to make. To find out how much 2-cycle oil to put in the gas, use the table provided.

  • Open a legal gas container and remove the lid. Fill a gas can with unleaded fuel (at least 89 octane and no more than 10% ethanol).
  • Fill the gas can with the proper amount of 2-cycle oil (3.2 oz. per gallon of gas).
  • Put on the cap again.
  • Mix the gas and oil by gently shaking the container.
  • Incorporate into the chainsaw’s gas container.

Gas cans should have labels indicating the type of fuel contained within. If you put the improper fuel in a machine, it could break. Although you might recall which gasoline can you used to mix petrol, it’s possible that someone else doesn’t.