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50:1 Don’t use 2 stroke outboard motor oil

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To prevent a costly mistake, always mix the specified 50:1 gasoline-to-oil ratio for the Ryobi SS30 lawn trimmer. This will make for a smooth day working in the yard.
All Weed Eater brand two-cycle gas trimmers use a 40:1 ratio of gas to oil. That`s equal to 3.2 ounces of oil to 1 gallon of regular gas. The gas should be 87 octane with no more than 10 percent alcohol.
Genuine Poulan 2 cycle engine oil; 40:1 ratio – 40 parts of gasoline to 1 part Poulan oil. This blend is designed to extend engine life and to provide smokeless exhaust.
Ensure that the fuel you are using with your Ryobi is the correct mixture of gasoline and 2-cycle lubricant if the engine sputters or smokes while in use. The mixture should be 50:1. If it isn`t, let the engine run until all fuel is used in the fuel tank and fill the tank with the proper mixture.
Mix the fuel at a ratio of 1 part 2-stroke oil to 50 parts petrol, in a clean container approved for petrol.
Oil mix ratios explained

If your manufacturer recommends a 50:1 fuel/oil mix, it means you need 50 parts of gas to one part two-stroke oil. To mix one gallon of fuel at 50:1, add 2.6 ounces of two-stroke oil to one gallon of gas, as shown in the chart below.

You can do that but I wouldn`t 40 to 1 means 40 parts of gas one part of oil. 50 to1 means 50 parts of gas to 1 part of oil. So the 40 to 1 mixture is more oily and provides better lubrication for your piston rings.
For 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.
If there is too much oil in the mixture, it can cause excessive smoke in the exhaust, oil leaking from the filter and loss of power. Too little oil allows the piston and cylinder to become hot and destroys the engine. You must first remove the old fuel and oil mixture to replace it with the correct ratio.
Petrol Use unleaded petrol intended for motor vehicle use with an octane rating of 91 ([R+M]/2) or higher. Oil Use 2-stroke oil for air cooled engines.
The recommended ratio of fuel mix is 1 part oil to 50 parts petrol. For example, if you are using 5L of petrol, you will need 0.1L (100ml) of 2 Stroke Oil. To mix the fuel, pour the 2 Stroke engine oil into a mixing can that is approved for use with fuel, then add the petrol.
Use a 40:1 two-cycle oil mix ratio. One gallon of gasoline combined with 3.2 oz of two-cycle engine oil. Unsure of the age of your equipment? Use the 40:1 mixture.
oz 4-Cycle 20W-50 Oil.

Discover Relevant Questions and Answers for Your Specific Issue

the most relevant questions and answers related to your specific issue

Gas to oil mixture for a RY 26540 – Ryobi 30 Cubic Centimeter Curved Shaft Gas Trimmer
ANSWER : 50:1 don’t use outboard motor mix

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What is the gas/oil mixture ration for a Ryobi gas leaf blower?
ANSWER : 40 to 1

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Do you mix gas and oil in this trimmer – Ryobi 30 Cubic Centimeter Curved Shaft Gas Trimmer
ANSWER : Yes. Verifythe ratio, either 40:1 or 50:1

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What type of oil goes in the Ryobi 08570 Blower? What is the oil gas mix ratio?
ANSWER : You need 2 stroke motor oil or chain saw oil.Mix it according to the lable to make up 50:1 oil/gas mix.

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What is the fuel ratio mixture for the ryobi gas blower?
ANSWER : The best fuel/oil ratio for that is 25:1

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Ryobi gas blower 200mph 2 cycle what is the ration gas to oil
ANSWER : I mix mine 50:1

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I have a ryobi ss26 weed eater i would like to know what kind of oil do i mix with the gas
ANSWER : Two cycle oil you can purchase from ACE, Menards,Home Depot…. the list goes on. Good Luck…

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I have a ryobi weedeater model 764r. how do i reset the mixture screws.it won’t start.
ANSWER : I replaced the gas line hose and the spark plug on a 2075r ryobi proffesional weed eater. Now it will not start. Thank you

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