How to Identify and Fix Common Gardening Problems ?

We provide a variety of viewpoints on how to identify and fix common gardening problems. Our sources include academic articles, blog posts, and personal essays from experienced gardeners :

The fuel and oil mixture should always be 2% (50:1).
Yes. All gas-powered chainsaws need gas mixed with oil in order to work correctly. The mixed gas ensures the smooth operation of the engine by providing lubrication and reducing its temperature to manageable levels. This is achieved by mixing oil and gas in specific ratios.
All STIHL gasoline-powered equipment uses a 50:1 gas and oil mixture.
Most modern chainsaws, string trimmers, leaf blowers and other small-engine two-stroke equipment recommend a 50:1 oil mix ratio, but some recommend 40:1 and older two-stroke equipment might even call for 32:1.
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.
Without lubricant, the speed at which the chain moves over the chainsaw bar can cause some serious friction. A slowed-down chain and excessive fuel burning mean there`s a lot of friction between your bar and chain, which means a lot of heat is being produced that could do major damage to your saw.
For a mixing ratio of 1 : 50 you need 5 litres of high-octane gas and 0.10 litres (100 ml) of STIHL two-stroke oil.
Mixing ratios

For a mixing ratio of 1 : 50 you need 5 litres of petrol and 0.10 litres (100cm³) of STIHL two-stroke oil.

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. I would recommend using fresh gasoline that has an octane rating of 89.
We recommend in all of our owners` manuals that you should only use high-quality brand-name petrol with a minimum octane rating of 90, but we can reassure you that petrol with an ethanol content of 10% or less, like the new E10 petrol will not cause a problem with your STIHL petrol tool.
STIHL currently recommends that you do not store or use fuel older than 60 days, and preferably no longer than 30 days, even with a stabilizer. Read more about storing your outdoor power equipment.
STIHL recommends that customers use a minimum of 89 octane fuel. If a customer chooses to use a 91 or 93 octane fuel, no damage to the engine will result. However, using an 87 octane fuel could lead to serious engine damage.
What happens if the mixing ratios in a 2 stroke engine are incorrect? If you put too much oil, it can generate additional carbon build-up, making it difficult to start the engine, blow excessive smoke which is particularly bad for the environment and may (with time) cause the engine to stop operating correctly.
Use for lubricating moving parts, pivot points and bearings. Lubricate small to larger motors found in sewing machines, fans, lawnmowers and trimmers, drills, chainsaws, and other tools.
Two-stroke oil will last for a couple of years when it is not mixed with petroleum. Once mixed with petroleum we would not recommend keeping for more than 3-4 months in a sealed airtight approved storage container. I HAVEN`T USED MY CHAINSAW SINCE LAST SEASON AND IT WON`T START.
Use a minimum of 89 octane gasoline and always use fresh fuel. Only buy enough gasoline that you can easily use up within a two- month period. For air-cooled, two-cycle engines, use a quality mix oil that meets the engine manufacturer`s recommendations.
It`s best to use ethanol-free gas in small engines. If you do decide to use ethanol, don`t use a fuel that is more than 10% ethanol (E10), and be sure to add fuel treatment to prevent the fuel from separating.
2-Stroke Oil Mix Calculator

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.

Running a 2-cycle with the wrong fuel to oil mixture can cause severe damage to your engine. Running the machine without any oil mixed in the fuel can cause severe damage to your equipment within just minutes. This damage is generally very costly to repair and is usually irreparable.
To make a 5:1dilution ratio for a gallon, we add the ratio numbers together like this: 5+1=6. Then, take 128oz and divide that by 6 and we get 21.3333333 ounces. So put 21.3oz of chemical in the container and fill the rest with water totaling 128oz to make a gallon of solution at a 5:1 dilution.
Four-cycle engines do not require mixing of oil & gasoline and have separate gasoline and oil tanks.
Step 1: You`ll need STIHL 2-Stroke oil, an empty and clean fuel can and fresh unleaded fuel from a reputable petrol station. Step 2: Mix at 50:1 (20mls oil per 1L fuel) when you`re using STIHL 2-Stroke oil. If you`re mixing a larger quantity, check out our useful mixing chart.
40 to 1 ratio

If you are unsure 40:1 is a middle range 2 stroke fuel ratio. This equals 25mls of two stroke oil to 1 litre of petrol. It is pretty easy to calculate, you just multiply the litre amount by 25.

The relevant difference between regular lubricating oil and two-stroke oil is that the latter must have a much lower ash content, to minimize deposits that tend to form if ash is present in the oil when it is burned in the engine`s combustion chamber.

Discover Relevant Questions and Answers for Your Specific Issue

the most relevant questions and answers related to your specific issue

ANSWER : 40 to one is a good mix

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Do I need gas and oil mix – Poulan Super 250a Chainsaw Plate
ANSWER : I think Poulan uses a 40:1 ratio to one gallon of gas, however I have always used 50:1 the same as my sthl saws with no issue. I would rather have more oil mix that to little.

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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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Oil-gas ratio – Homelite ZR10926 16 Chain Saw
ANSWER : Hi. 50 to 1.

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What is the gas oil ratio – Poulan Wild Thing 2375 18" Gas Chain Saw 2.5 Cuin
ANSWER : Half and half

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I need the gas mix oil ratio for the Poluan Pro 42…
ANSWER : 40:1 gas to oil ratio.

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How do u mix the 50/1 ratio oil and gas mixture
ANSWER : Mix 2 1/2 oz of 2 cycle oil into 1 gal of gas

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What is ratio of oil in gas – Hitachi RB24EAP 23.9cc 2 Stroke 170 MPH Gas Powered Handheld Blower
ANSWER : Anywhere between 25:1 and 50:1

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