What Kind of Mix Do You Use in a Stihl Chain Saw?
Stihl gasoline-engine chain saws are powered by two-cycle engines that run on a mixture of gasoline and lubricating oil. The gas and oil must be mixed in the correct proportions or engine performance will suffer. Failure to follow fuel-mixing directions could also lead to piston seizing and other permanent, costly engine damage.
The gas-oil mix for a Stihl chain saw is 50 to1. That’s equal to 2.5 fluid ounces of low ash two-cycle engine oil per 1 gallon of mid-grade gasoline having an 89 octane rating and no more than 10 percent ethanol. When mixing, pour the oil into the container first and then add the gasoline. Shake well to mix them thoroughly.
Herb Kirchhoff has more than three decades of hands-on experience as an avid garden hobbyist and home handyman. Since retiring from the news business in 2008, Kirchhoff takes care of a 12-acre rural Michigan lakefront property and applies his experience to his vegetable and flower gardens and home repair and renovation projects.
Stihl Chainsaws Fuel Mix Ratio
If your car runs on regular gasoline, you would never even think of putting diesel fuel in your tank. Likewise, you wouldn't try to run a flashlight on D batteries when it takes AA batteries. That's because trying to operate any electronic device or tool with the wrong power source can be, at the very least, ineffective. In some cases, using the wrong fuel can even be damaging and dangerous.
Using the right fuel mixed with the accurate ratio of components is essential for the safe and efficient operation of your chainsaw. Stihl gasoline-powered equipment uses a 50:1 ratio of gasoline and 2-cycle engine oil. Learning how to mix your fuel properly is important in keeping your chainsaw in excellent condition over time.
Before You Begin
Before you begin mixing, make sure you’ve read the manual that came with your specific chainsaw for information on any unique needs it may have. If you lost your manual, online versions are available on Stihl’s website.
Make sure you use a gasoline container specifically created for this purpose. No-spill receptacles reduce splashes, spilling, and evaporation. When choosing which gasoline to use, keep in mind that this isn't the place to skimp.
Unleaded gasoline with a minimum octane rating of 89 is recommended. A lower octane can cause some issues, such as increased engine temperature, increased piston seizures, and engine damage. Stihl offers 2-cycle oils made especially for Stihl chainsaws. Premium quality 2-cycle fuels provide protection for your engine.
All Stihl equipment operates on a 2:1 ratio. Use the below as a guide for creating your mixture:
- 1 gallon of gasoline + 2.6 fluid ounces of oil
- 2.5 gallons of gasoline + 6.4 fluid ounces of oil
- 5 gallons of gasoline + 12.8 fluid ounces of oil
Pour the oil into your gasoline container before adding the gasoline. Close the container and shake it thoroughly to ensure it mixes together.
Usage and Storage
Before fueling your chainsaw, make sure you clean the fuel cap and the area around it to keep any debris or dirt from getting into the fuel. Position the machine so that the fuel cap faces upward. Remove the cap slowly, so any pressure that has built up can be gradually released. This precaution can minimize the risk of getting fuel on your skin or inhaling dangerous fumes.
Only mix enough fuel to last you one to three days at a time; this limit keeps the fuel fresh and minimizes the risk of any buildup. Never store fuel for longer than three months. If your fuel has been sitting for any length of time, shake the container to mix it up again. Storing the mixture should be done with care, away from anything flammable and away from your home.
If you find mixing to be too time-consuming or annoying, Stihl does offer customers other options to run their chainsaws, such as Stihl MotoMix, a pre-mixed, high-performance fuel that is ready to use straight away, eliminating the need for measuring, shaking and storing. Whether you purchase a pre-mixed fuel or mix your own, following the correct ratio can keep your chainsaw working properly and keep it working for years.
What is the oil ratio for a Stihl chainsaw?
Click to see full answer.
Keeping this in consideration, what is a 50 to 1 mixture?
You want to mix 2.6 ounces of oil to one gallon of gasoline for a 50:1 mixture. If you're mixing up two gallons of gasoline you will have to mix 5.2 ounces of oil to two gallons of gasoline for a 50:1 mixture.
Also, what is the oil to gas ratio for Husqvarna chainsaws? The ratio that is used when mixing 2 stroke oil and gasoline is very important, if there are ANY inaccuracies, your saw will not run efficiently. All Husqvarna chainsaws use the ratio of 50:1, this means that for every gallon of gas you will use 2.6 oz. of 2 stroke engine oil.
Likewise, what is the mix ratio for a chainsaw?
Read Your ManualMany gas-powered chainsaws run on a 40:1 mixture of gasoline and 2-cycle engine oil. Stihl chainsaws and others run on a 50:1 mixture of gas and 2-cycle engine oil. Some older models use a 30:1 ratio. Check your chainsaw's manual to be sure.
How much oil do I put in a 2 stroke chainsaw?
2-Stroke Oil Mix CalculatorFor a 50:1 ratio of gas to oil, use 2.6 fluid ounces of oil per gallon of gas. For a 40:1 mixture, use 3.2 fluid ounces of oil per gallon of gas. For a 32:1 mixture, use 4 fluid ounces of oil per gallon of gas.
Stihl Chainsaw Fuel Mixture?
Ive been running 50:1 since 32:1 was fazed out, and never had one problem. Ive run em in pretty hot conditions too. My saw shop says all there classes, for stihl, husky, and echo say that they have had the least problems with the chevron supreme, because as mentioned earlier the gas is very important!!!!!!!!!!!!!!! Found out about the chevron thing recently, and the funny thing is I have run it exclusively for years only beacause I have one gas card. Guess I was lucky that I was running what was prefered without knowing LOL! But I can tell you alot of guys around me run alot of different gases, and my saw shop rebuilds tons of carbs, and replaces many fuel lines. I run chevron with stihl 50:1 Nothing else ever! I have never seized blown up or had any problems with this combo, and since 1998 when I got a newer 044, and my husky I have only replaced one fuel line on the 44, and one on the husky. Only only one carb kit that was last summer on the 44. Take it easy NORM.................
Chainsaw ratio stihl
.Stihl Chainsaw Carburetor Adjustment
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