The fuel mixture for ECHO string trimmers is made up of gas and oil.

A string trimmer may experience issues starting and running if old gas is left in it. In order to prevent carburetor and engine problems, it’s crucial to not only use fresh gas but also to mix it properly and store it.

50 parts unleaded gasoline with a minimum octane rating of 89 and a minimum ethanol content of 10% is mixed with 1 part premium 2-cycle engine oil when operating ECHO string trimmers.

To learn more about how crucial it is to fuel your ECHO trimmer properly, keep reading. I provide details on how ethanol affects your trimmer, how to mix 2-cycle oil and gas, and the necessity of a fuel stabilizer.

ECHO string trimmer fuel tank

ECHO string trimmers

Prior to diagnosing, repairing, or operating your equipment, make sure to follow all safety instructions provided in the operator’s manual. If you don’t have the knowledge, the skills, or the health to safely complete the repair, consult a professional.

Old or Bad Gas in an ECHO String Trimmer

An ECHO string trimmer shouldn’t be left unattended with fuel in the fuel tank. This is due to the fact that gas starts to degrade as soon as 30 days after purchase.

Most gasoline now contains ethanol, an environmentally friendly alternative fuel that draws moisture from the atmosphere. This mixture of ethanol and water evaporates, leaving behind a sticky substance that coats the fuel’s constituent parts.

This may prevent proper corrosion from occurring and clog the fuel system. A common cause of carburetor failure is using old fuel.

It’s crucial to use fresh gas and use it up within 30 days because gas starts to spoil so quickly. If you can’t finish it off that quickly, mix in a fuel enhancer like Sea Foam Motor Treatment.

Your gas will be stabilized by this product, and the moisture will be reduced, extending its shelf life. Additionally, you can verify whether the oil you add to the gas contains a long-term stabilizer. (Read the label: oil stabilizers added as a fuel can last up to two years and up to 30 days.)

Unleaded gasoline with a minimum octane rating of 89 and a maximum ethanol content of 10% is required for use with ECHO string trimmers. Prior to adding the gas to the fuel port, combine it with a 2-cycle premium oil.

Avoid using gasoline that contains more than 10% ethanol, including E15, E30, and E85. Up to 15%, 30%, and 85% of ethanol, respectively, are present in these fuels.

The best fuels are those without ethanol, which will lessen the problems you have with old fuel. You can buy ethanol-free fuel online or at your neighborhood hardware store. Two excellent choices are 2-cycle TruFuel 50:1 Premix or 2-cycle Red Armor Premix by ECHO.

They are also offered for sale as recreational fuel at some gas stations (REC-90). On, search for a fuel station in your area.

Gas and Oil to Use in a 2-Cycle ECHO String Trimmer

2-Cycle Gas and Oil Mix in an ECHO String Trimmer

Before filling the fuel tank, ECHO string trimmers need a 2-cycle premium oil mixed with the gas. Avoid the error of fueling your 2-cycle string trimmer with straight gas. You’ll come to regret this choice.

The engine will seize if you add straight gas because gas runs so dry. The internal components of the engine won’t be able to move freely without the lubrication provided by the addition of oil to the gas.

Your ECHO string trimmer will most likely need to be replaced if you accidentally add straight gas to it and turn it on. There will be harm to the engine.

The gas and oil ratio for ECHO 2-cycle string trimmers is 50:1. This means that 50 parts gas and 1 part oil must be combined. For information on how much oil you need to mix using standard gallon measurements, see the chart below.

Use unleaded gasoline with a minimum octane rating of 89 (mid-grade) and a maximum ethanol content of 10% when making this mixture. Include an ISO-L-EGD and JASO M345 FD certified 2-cycle premium oil. Note: Regular engine oil and 2-cycle engine oil are NOT THE SAME.

How to mix gas and oil for a 2-cycle ECHO string trimmer:

  • To calculate how much fuel mix to prepare, use the chart below.
  • An authorized gas can’s cap should be removed. Fill a gas can with unleaded fuel with a minimum 89 octane rating and a maximum 10% ethanol content.
  • For the number of ounces of oil required, see the chart below. To the gas can, add the 2-cycle oil.
  • Change the cap.
  • Shake the oil and fuel together slowly to combine them.
  • Fill up the fuel tank on the ECHO string trimmer.

Use ECHO Power Blend or ECHO Red Armor, the recommended oils by the manufacturer. This Kawasaki 2-cycle mixture is an alternative. It is available in 5.2 oz. and 6.4 oz. bottles, which can be mixed 50:1 with 2 gallons or 2.5 gallons of gas, respectively.

The lifespan of the gas and oil mixture can be increased by using one of these brands of oil that already contains a fuel stabilizer. Read the bottle, please. While some fuel stabilizers only last a month, others can last up to two years. A stabilizer like Sea Foam Motor Treatment can also be added.

2-Cycle ECHO Gas to Oil Mix

Gas to Oil Mix Ratio1 Gallon Gas2 Gallon Gas2.5 Gallon Gas
50:12.6 oz Oil5.2 oz Oil6.4 oz Oil
ECHO 2-Cycle Gas to Oil Mix Ratio

Fuel for a two-cycle, ethanol-free ECHO string trimmer

An ethanol-free fuel mixture is the best fuel to use in an ECHO string trimmer in order to decrease fuel issues and increase engine life. This oil and fuel mixture, which is ethanol-free, is prepared to be poured into the fuel tank of your ECHO string trimmer.

As was covered in the section on fuel, you won’t have to deal with the negative effects of ethanol. ECHO Red Armor and TruFuel 50:1 premixed fuels are examples of products that perform well.

In Summary

Your ECHO string trimmer’s fuel choice has an impact on both performance and the likelihood that the fuel system and engine will experience issues. When choosing a fuel for your string trimmer, remember these easy guidelines:

  • Use only brand-new gas.
  • Make sure the amount of ethanol in the gas is no more than 10%.
  • Pick fuel with at least an 89 octane rating.
  • Use a 50:1 mixture of two-cycle gas and oil.
  • So that your gas lasts longer without degrading, add a fuel stabilizer. Stabilizers don’t all have the same shelf lives. Fuel can be stabilized for up to two years with a product like Sea Foam Motor Treatment.