Most handheld power equipment is run with a 2-stroke engine, which means it operates on a 2-cycle engine oil mix of gas and oil. Two-cycle internal combustion engines need the mix to allow them to compress and combust simultaneously to give you the burst of high power you need to trim weeds, clean up leaves or take down tree limbs. Without the proper 2-cycle oil mix ratio, your small engine won't ignite and operate correctly. To learn more about the correct mix for your outdoor power equipment, check your Owner's Manual for the proper ratio, and use our 2-cycle oil mix ratio chart to create it or purchase a pre-mixed fuel.
Use a 40-to-1 two-cycle oil mix ratio (to aid in the reduction of emissions). This can be made by mixing 3.2 ounces of two-cycle engine oil with 1 gallon of gasoline.
Use the 40:1 mixture. All of our handheld two-cycle units can operate on a 40:1 two-cycle oil mix ratio.
OIL per 1 U.S.
OIL per 1 IMPERIAL
OIL per 1 LITER
|32:1||4 oz.||5 oz.||31.25 mL|
|40:1||3.2 oz.||4 oz.||25 mL|
|50:1||2.6 oz.||3.2 oz.||20 mL|
Before you mix fuel and oil for your 2-cycle engine, make sure you take note of the amount of ethanol in your gasoline. In recent years, ethanol has become more prevalent in gasoline mixtures. While your mower can usually tolerate this, handheld equipment has a more difficult time using anything with more than 10% ethanol. Anything higher can cause problems in your carburetor and engine. You will still encounter problems if you don't store your fuel properly and run stale fuel that is over 30 days old.
Ethanol in your gasoline attracts moisture when exposed to air, causing water to collect in your fuel can. Plus, high humidity or a poor seal on your container can make it worse. After absorbing just ¾ of an ounce of water, the gasoline or 2-cycle engine oil mix will start to separate and if used, the water can cause rust and corrosion in your engine or carburetor. For this reason, avoid ethanol if you can, and never use gasoline with more than 10% ethanol. In addition, store your fuel in proper containers, shaking them gently before adding fuel to your machine to mix any moisture with the oil and gas.
After changing your fuel, let your handheld equipment run for a few minutes before operating so the 2-cycle engine oil mix can work its way through the engine. Consider creating a system to track when you last changed the fuel mixture to avoid running stale oil in the equipment.