Fuel mixture for a weed eater

The make and model of your weed trimmer will determine the correct fuel-to-oil mixture. Some models, such as Stihl, require a ratio of 50:1, while others, including Weed Eater, require a 40:1 mixture and still others, including Ryobi, run on a 32:1 mixture. Check your owner's manual to make sure you're mixing in the proper ratio.

Fuel mixture for a weed eater. SUMMARY: STIHL FUEL MIX. Using the right fuel mixture in your petrol tool protects it from damage such as piston seizure. We recommend using a 50 to 1 fuel mix: 1 part oil to 50 parts of petrol, or 20 ml oil per litre of petrol. When using other brands of oil, mix according to the manufacturer’s specifications.

However, generally speaking, weed eater oil will be mixed with the following ratios: 50:1. 40:1. 32:1. This means that, if your engine requires a 50:1 mix, you will need to mix 50 parts fuel to 1 part oil. If you can’t find the information in your user manual or you have misplaced it then the correct ratio is also usually found on a label on ...

Homelite string trimmers use a gas and oil mixture at a ratio of 50:1. Unleaded gasoline with a minimum 87-octane rating and maximum 10% ethanol content is mixed with a premium 2-cycle engine oil. Wipe around the fuel cap before filling it with fuel. Allow the string trimmer to cool for a couple of minutes before slowly removing the fuel cap.Do not mix more than one month’s supply of fuel at a time. Mix the fuel mixture thoroughly before filling the machine’s fuel tank. Mix the correct ratio as specified by the manufacturer. To find the fuel mix ratio, please refer to the operator’s manual for your product. Fuel and oil mixture should always be 2% (50:1). We recommend that ...Aug 1, 2017 · Solution. Two-cycle engines run on a mixture of gasoline and oil. Each engine type is designed to run on a specific gas-to-oil mix ratio. To confirm the correct ratio for your equipment, check your Operator's Manual. IMPORTANT: Use only oil that is labeled for use in “Two-cycle” or “Two-stroke” engines. Two-cycle oil is available at ... be mounted on it. The term "trimmer" is used to designate an FS unit that is equipped with a nylon line head or a head with flexible plastic blades (i.e., the PolyCut head.) FS models with an "R" on the nameplate were originally configured (at the time of distribution) as a trimmer with a loop handle. WARNING As more fully explained later in theseECHO string trimmers use a gasoline and oil mixture at a ratio of 50:1. 50 parts unleaded gasoline with a minimum octane rating of 89 and a maximum ethanol content of 10% is mixed with 1 part premium 2-cycle engine oil. Keep reading to learn more about the importance of using the correct fuel in your ECHO trimmer.http://bit.ly/1SXulN8This video demonstrates the correct oil and gas mix for 2 cycle engine yard tools. In order to extend the life of these lawn tools and k...

(Trimmer Only) WARNING: Before using any attachment, read and understand the manual that came with the attachment. Follow all safety information contained within. WARNING: To avoid serious personal injury and damage to the unit, shut the unit off before removing or installing an attachment. Page 8: Oil And Fuel Here’s how to properly mix the fuel.For more tips and tutorials about ga... If your outdoor equipment has a 2-cycle engine, it runs on a mixture of oil and gas. Here’s how to properly mix the ...Use a 32:1 gasoline to oil ratio. One gallon of gasoline combined with 4 oz of two-cycle engine oil. If you are in the state of California, use a 2-cycle oil mix ratio of 40:1. For two-cycle handheld equipment manufactured after 2002: Use a 40:1 two-cycle oil mix ratio. One gallon of gasoline combined with 3.2 oz of two-cycle engine oil.Summary: grass trimmer fuel mixture. Using the right fuel mixture in your grass trimmer protects it from damage such as piston seizure. We recommend using STIHL 1:50 2-stroke engine oil with petrol, at a mix ratio of 1:50 – 1 part oil to 50 parts of petrol. If you’re using a different brand of oil, make sure it has the TC classification.ECHO string trimmers use a gasoline and oil mixture at a ratio of 50:1. 50 parts unleaded gasoline with a minimum octane rating of 89 and a maximum ethanol content of 10% is mixed with 1 part premium 2-cycle engine oil. Keep reading to learn more about the importance of using the correct fuel in your ECHO trimmer.

How to Create the Oil Mix. Pour the correct amount of 2-stroke oil into a clean gas can. Add the correct amount of gasoline. Stir or shake the container to mix the oil and gas. Use the mixture within 30 days or add fuel stabilizer to extend the shelf life. 2-Stroke Oil Mix Calculator. For a 50:1 ratio of gas to oil, use 2.6 fluid ounces of oil ...Dec 15, 2023 · Summary: grass trimmer fuel mixture Using the right fuel mixture in your grass trimmer protects it from damage such as piston seizure We recommend using STIHL 1:50 2-stroke engine oil with gas , at a mix ratio of 1:50 – 1 part oil to 50 parts of petrol If you’re using a different brand of oil, make sure it has the TC classification. Spray individual weeds without catching your favorite plants in the crossfire. Learn more. Expert Advice On Improving Your Home Videos Latest View All Guides Latest View All Radio ...2-cycle weed eaters typically use a 40:1 or 50:1 ratio of fuel to oil. 4-cycle weed eaters keep the gas and oil separate, so you can use regular fuel. Never use fuel that contains more than 10% of ethanol, as many small engines aren’t equipped to handle that ingredient.Are you tired of clogged carburetors or engines that won't start? Maybe you're mixing your gas and oil wrong. Let me teach you the proper way to mix gas and ...

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Here at STIHL SHOP Ellerslie we are frequently asked about mixing our 2-Stroke Fuel, so we have decided to create a video to show you just how easy it can be.Currently, the most common mixtures are 50:1 and 40:1. If you don’t have the user manual, try searching online for your weed wacker model and recommended oil mixture, or contact the manufacturer. When you learn the correct oil mixture, write it down somewhere or on the side of the machine so you don’t forget. 2.Spray individual weeds without catching your favorite plants in the crossfire. Learn more. Expert Advice On Improving Your Home Videos Latest View All Guides Latest View All Radio ...Mixing Gas and Oil. The correct ratio of gas-to-oil mixture for Weed Eater line trimmers is 1 part oil to 40 parts gasoline. The best method of mixing is to start by adding 1 gallon of regular unleaded gasoline to a gas can. Then pour in a 3.2-ounce bottle of good quality, synthetic 2-cycle air-cooled engine oil.Two new string trimmers (aka weed whackers) recently ditched the traditional gas/oil fuel mixture for cleaner technologies. One switched to propane, the other to lithium-ion batteries.

Tired of struggling with your Echo weed eater and constantly buying pre-mixed fuel for it? Well, you're in luck because today I'm going to teach you how toFeatures. STIHL Easy2Start™. AutoCut® C EasySpool™. Loop Handle (R) Multi-Function Control Handle. This entry-level trimmer feels like first class. The STIHL FS 40 C-E trimmer is lightweight, balanced in hand, and features a curved shaft for exceptional handling. The STIHL FS 40 C-E trimmer is lightweight, balanced in hand, and features a ...Consider an example, the two-cycle oil mix ratio for weed eater is 40:1. For optimum performance, never use Husqvarna 4-stroke weed eater oil for two-stroke engines. You can also check out the Stihl chainsaw fuel mix ratio, which is th e same as Husqvarna. How to Calculate Fuel Ratio for Husqvarna Weed Eater. You can also calculate the fuel mix ...Jun 25, 2022 · Consider an example, the two-cycle oil mix ratio for weed eater is 40:1. For optimum performance, never use Husqvarna 4-stroke weed eater oil for two-stroke engines. You can also check out the Stihl chainsaw fuel mix ratio, which is th e same as Husqvarna. How to Calculate Fuel Ratio for Husqvarna Weed Eater. You can also calculate the fuel mix ... Fuel Mix. The FeatherLite trimmer is designed to run on a 40-to-1 mix of gas and oil. That is equal to 3.2 fluid ounces of two-cycle engine oil to 1 gallon of gasoline. Weed Eater recommends 87 octane regular gasoline with not more than 10 percent ethanol and synthetic two-cycle engine oil. When mixing fuel, add the two-cycle oil to the ...Two new string trimmers (aka weed whackers) recently ditched the traditional gas/oil fuel mixture for cleaner technologies. One switched to propane, the other to lithium-ion batteries.Too little oil and the engine will overheat and seize up. Because weed trimmers do not have separate compartments for gas and oil, you must get the mix just right in order to ensure a healthy garden tool. The make and model of your weed trimmer will determine the correct fuel-to-oil mixture. Some models require a ratio of 32:1, 40:1 …Homelite string trimmers use a gas and oil mixture at a ratio of 50:1. Unleaded gasoline with a minimum 87-octane rating and maximum 10% ethanol content is mixed with a premium 2-cycle engine oil. Wipe around the fuel cap before filling it with fuel. Allow the string trimmer to cool for a couple of minutes before slowly removing the fuel cap.Two-stroke oil • For the best results use HUSQVARNA two- stroke oil, which has been specially developed for clearing saws and chain saws. Mixing ratio 1:50 (2%). Page 16: Start And Stop 1.5 Nm. The tightening torque of the locking nut should be 35-50 Nm. • Check that the trimmer head and spray guard are not damaged or cracked.Here is a 6-Step guideline to help you with adjusting the fuel mixture by regulating the low-speed screw: Locate the carburetor on your Stihl weed eater. Identify the low-speed adjustment screw located near the choke. Increase or decrease fuel delivery by turning clockwise or counterclockwise using a fine-tuning tool.6 Jul 2015 ... This. 40-1, 50-1, 45-1 its not a big deal as long as you adjust your carb. I use 40-1 in just about everything that takes mix. Worst you'll do ...how to mix up 2 stroke gas for leaf blowers, saws, weedeaters/weedwhackers anything with a 2 stroke (two cycle) engine on it. be sure to use ratio that the m...

Your Toro 2-cycle string trimmer uses a gas and oil mixture at a ratio of 50:1. This means 50 parts gas is mixed with 1 part oil. Refer to the chart below for the proper gas and oil measurements required. When creating this mix, use unleaded gasoline with a minimum octane rating of 87 (regular) and maximum ethanol content of 10%.

To make fuel for the FS55R string trimmer, mix 2.6 U.S. fluid ounces of high-quality, two-cycle, air-cooled engine oil in 1 U.S. gallon of midgrade unleaded gasoline. Shake well before fueling. The gas should have an octane rating of at least 89, with not more than 10 percent ethanol. Advertisement.Mix (shake) the fuel mixture. Add the remaining amount of precautions, will lessen the risk of fire: gasoline. Page 13 STARTING AND STOPPING Check before starting Choke: Set the choke control in the choke position. Check that the trimmer head and trimmer guard are not damaged or cracked.The most common fuel/oil mix ratio is 40:1. That means that you need 40 parts of gas to one gallon of oil. The same rule applies to the other two mixtures. If you know that one gallon of oil is equal to 128 oz. (1 US gallon), you just need to divide 128 oz. with the recommended mix ratio and you will calculate how many ounces of oil you need.Nov 29, 2023 · Follow these simple steps to mix fuel for your Husqvarna weed eater: Step 1: Safety First: Before handling any fuels or oils, ensure you are in a well-ventilated area away from open flames or sparks. Step 2: Prepare the Gasoline: Use a clean gasoline container and fill it with the required amount of gasoline. The accurate gas mix for a weed eater is 40:1. You can obtain this amount by mixing 3.2 ounces of oil into one gallon of regular gas; as time passes, the oil will separate from the gas. But to ensure a proper mix, shake the oil and gas thoroughly.ECHO string trimmers use a gasoline and oil mixture at a ratio of 50:1. 50 parts unleaded gasoline with a minimum octane rating of 89 and a maximum ethanol content of 10% is …Metal in Motion- Learn three ways to mix your 2 stroke oil, and how to calculate for mixing smaller amounts...when you're almost out of gas and need to finis...

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Feb 16, 2024 · The most common ratio for a weed eater gas mixture is 50 parts gasoline to 1 part oil, although this can vary depending on the manufacturer’s recommendations. It’s important to follow the correct ratio to ensure optimal performance and longevity of the weed eater. Air purge removes air from carburetor and fuel system for easy starting. View more. Detachable Shaft. ... Gear ratio: 19: Drive gear angle: 30 ° ... Weed Eater & String Trimmer Line. Titanium Force® Trimmer Line. 4.3 (12) ...Hover Image to Zoom. $ 6 97. Fuel is pre-mixed and ready to use. Designed for portable 2-cycle gas-powered equipment. Advanced formula keeps fuel fresh for over 2 years after opened. View More Details. South Loop Store. 106 in stock Aisle 45, Bay 013. Pickup at South Loop.The fuel-oil mixture ratio for all Weed Eater products is 40:1. You can obtain this ratio by mixing 3.2 oz. of two cycle air cooled engine oil with one gallon of regular gas. Over a period of time oil will separate from gasoline. To properly insure oil and gas mixture, we recommend thoroughly shaking your oil and gas mixture before refueling ...What is the gas mixture for an ECHO trimmer? If you use Power BlendX oil — or an equivalent product — mixing it with gasoline at a ratio of 50 parts gasoline to 1 part oil is acceptable for any Echo product, even if the manual specifies a different mixing ratio. To achieve this ratio, add 2.6 ounces of oil to each gallon of gasoline.Grid. TruFuel. 32-oz 50:1 Ethanol Free Pre-Blended 2-Cycle Fuel. 1101. • Ready-to-use premixed fuel engineered for 2-cycle engines using a 50:1 mix. • Ethanol-free formula provides easier engine starting and smoother idling. • No more mixing, no more mess with premixed ready-to-use fuel. TruFuel.6 Mar 2020 ... Unfortunately the diagnosis isn't very good. Craftsman trimmer is ran on a light oil/fuel mixture ... How to Mix Gas and Oil for Weed Eater: Tips ...Jul 27, 2022 · Measuring the 40:1 fuel mixture for a Bolens weed eater is simple: With one gallon of fresh gasoline, add 3.2 ounces of oil. Alternatively, if using one liter of gasoline, mix in 25 ml of oil. For a 50:1 fuel mixture ratio, combine one gallon of gasoline with 2.6 ounces of oil or 20 ml of oil for one liter of gasoline. Step 1. Mix the fuel and oil. If your Troy-Bilt string trimmer has a 2-cycle engine, you will need to mix gasoline with 2-cycle oil before you fill the string trimmer tank. Fill a gas can with 1 gallon of gasoline and add a 95 ml (3.2 oz.) bottle of 2-cycle engine oil. Do not pour the gasoline directly into the string trimmer without mixing it ... ….

Two new string trimmers (aka weed whackers) recently ditched the traditional gas/oil fuel mixture for cleaner technologies. One switched to propane, the other to lithium-ion batteries.Mixing gasoline and oil for your weed eater is like creating a lethal cocktail, except the only ones who get high are the weeds. Ratio of Gasoline and Oil Mix for Weed Eater. The recommended gasoline and oil mixture ratio for 4-cycle weed eater engines plays a vital role in the performance of the machine. Below are three essential points to ...26 Oct 2009 ... It was once a common mix ratio. The difference between then and now is not the engines but the oils. Oils have gotten much better in modern ...Yes, you can mix regular oil with gas to lubricate the weed eater during use and never do so in the fuel tank. The two-stroke outboard fuel mix ratio is 40:1 for all weed eater products, translating to 3.2 ounces of oil to 1 gallon of gas. Use a container bigger than the gas volume to mix the oil, close it tightly and shake them to mix properly.Typically, a 2-cycle weed eater will require a fuel mixture of 50 parts gasoline to 1 part oil. Once you have determined the correct ratio, you can mix the fuel in a clean, empty gas can. Start by pouring the appropriate amount of oil into the gas can, and then add the gasoline.STA-BIL Full Synthetic 2-Cycle Oil - With Fuel Stabilizer For Up To 12 Months Protection - 5 Gallon Multi-Mix - 50:1/40:1 Mix Ratios - Low Smoke Formula, 13 fl. oz. (22404) 4.7 out of 5 stars 1,101The L screw controls the fuel mixture when the trimmer is operating at low speed, and on a chainsaw, it's usually the first one you adjust, although following an adjustment sequence isn't as important for a string trimmer. The H screw controls the mixture when the trimmer is operating at full throttle, and the LA screw adjusts the idle …Features. STIHL Easy2Start™. AutoCut® C EasySpool™. Loop Handle (R) Multi-Function Control Handle. This entry-level trimmer feels like first class. The STIHL FS 40 C-E trimmer is lightweight, balanced in hand, and features a curved shaft for exceptional handling. The STIHL FS 40 C-E trimmer is lightweight, balanced in hand, and features a ... Fuel mixture for a weed eater, Yes, you can mix regular oil with gas to lubricate the weed eater during use and never do so in the fuel tank. The two-stroke outboard fuel mix ratio is 40:1 for all weed eater products, translating to 3.2 ounces of oil to 1 gallon of gas. Use a container bigger than the gas volume to mix the oil, close it tightly and shake them to mix properly., Weed eaters need to use unleaded regular gas with a high-octane content, often varying from 87 to 89 octanes or higher, depending on the brand and model. Furthermore, weed eaters can’t take gas that has more than 10% ethanol. Therefore, it’s recommended to use an ethanol-free gas to avoid damaging the trimmer’s engine., Confused by the vast number of weed control products crowding the aisles of your garden center? Find out what you need to know to prevent and control weeds in your yard, as well as..., Fuel Your STIHL power tool uses an oil- gasoline mixture for fuel (see the chapter on "Fuel" of your instruction manual.) Always wear gloves when handling the machine and metal blades. Heavy-duty, non-slip gloves improve your grip and help to protect your hands. Clothing must be sturdy and snug-fitting, but allow complete freedom of movement ..., For two-cycle handheld engines produced after 2003: Use a 40-to-1 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. If you are unsure of the year your equipment was made: Use the 40:1 mixture. All of our handheld two-cycle units can operate on a 40:1 mixture., Too little oil and the engine will overheat and seize up. Because weed trimmers do not have separate compartments for gas and oil, you must get the mix just right in order to ensure a healthy garden tool. The make and model of your weed trimmer will determine the correct fuel-to-oil mixture. Some models require a ratio of 32:1, 40:1 …, 14 Apr 2005 ... I knew a guy that did that once, old farmer. Would but weedeaters at garage sales and use what life they had left in them., How to Mix Gas and Oil for Weed Eater: Tips from Sears Home Services - YouTube. Sears Home Services. 16K subscribers. 1K. 221K views 8 years ago. http://bit.ly/1SXulN8 This …, 6,234. Reaction score. 5,336. Location. Ulster County NY. Jan 24, 2007. #2. Use the Stihl oil at 50:1. The same goes for Husky oil, or Red Max, Jonsered, Echo, Solo, or Dolmar oils, even though a lot of them essentially say the same thing on the back of their respective containers., The gas/oil ratio for Ryobi two-cycle trimmers is 50:1. That means you add 2.6 ounces of oil to every gallon of gasoline. ... If you have a four-cycle trimmer, the recommended oil is Ryobi four-cycle 20W50 engine lubricant. You can also use SAE 30, 10W30 or 10W40 engine oil -- in short, virtually any oil suitable for an automobile engine., Learn how to correctly mix and store 2 stroke fuel used in RYOBI power garden equipment., A Weed Eater two-cycle engine requires a mixture of gas and oil in the ratio of 40:1. To obtain this ratio, one gallon of gasoline should be mixed with 3.2 ounces of engine oil., trimmer or a brushcutter – therefore, the power tool is referred in this manual as a "trimmer / brushcutter". Some smaller and / or lightweight FS models may only be used as a trimmer, i.e., they may not be used with metal blades. FS models with an "R" on the nameplate were originally configured (at the time of, Step 1: Start by reading the manual for your weed eater. You can get additional information regarding the fuel mixtures and fuel grade if you RTFM. If you’ve …, Before operation, gasoline must be mixed with agood quality synthetic 2-cycle air-cooled engine oil d esigned tobe mixed at a ratio of 4 0:1. Poulan/WEED EATER brand synthetic oil isrecommended. Mix g as- oline and oil a taratio o f40:1. Page 7: Troubleshooting , The professional-grade ECHO SRM-230 gas straight shaft trimmer provides outstanding power, durability and performance. It comes packed with commercial features enabling all day operation. Easy-to-use custom ergonomic controls, lightweight design and powerful 2-stroke engine enhance productivity., What is the correct weed eater gas mixture ratio? The correct weed eater gas mixture ratio is usually 50:1, which means 50 parts gasoline to 1 part oil. How do I mix weed eater gas mixture? To mix weed eater gas mixture, you will need to first determine the correct ratio for your specific weed eater., What is the correct weed eater gas mixture ratio? The correct weed eater gas mixture ratio is usually 50:1, which means 50 parts gasoline to 1 part oil. How do I mix weed eater gas mixture? To mix weed eater gas mixture, you will need to first determine the correct ratio for your specific weed eater., How much gas should I put in my weed eater? It is recommended to use a fuel mixture of 50:1 which means 2.6 ounces of oil per gallon of gas. Can I use regular gasoline in my weed eater? No, you cannot use regular gasoline in your weed eater. You need to use a fuel mixture of gas and oil to prevent damaging the engine., Summary: grass trimmer fuel mixture. Using the right fuel mixture in your grass trimmer protects it from damage such as piston seizure. We recommend using STIHL 1:50 2-stroke engine oil with petrol, at a mix ratio of 1:50 – 1 part oil to 50 parts of petrol. If you’re using a different brand of oil, make sure it has the TC classification., The TB25S gas string trimmer features a 25 cc, 2-cycle lightweight engine that is comfortable for everyone. It comes with a Fixed-Line Trimmer Head that loads line in seconds by simply inserting precut lines into the cutting head until even on both ends. ... Would not start after one tank of gas mix. Used it only for about 30 minutes. Bad sign ..., 4 Jan 2013 ... TOM: Yes, it's fine to use it in your car. It's a relatively small amount of oil (1 part oil to 40 parts gasoline)., Fuel/Oil Ratio.....50:1 with Shindaiwa Premium 2-cycle mixing oil Fuel Tank Capacity .....554 ml/18.7 oz. ... Fuel Tank T230 GRAss TRIMMER T230X GRAss TRIMMER Outer Tube Trimmer Head Grip Cutting Attachment Shield Gearcase Throttle Trigger Tank Protector Ignition Switch Spark Plug Fuel Tank, How to Mix Gas for a 2-stroke: First your gonna need to know the gas to oil ratio on your 2-cycle engine whether its 32:1 or 50:1. On a standard weed-eater the gas to oil ratio is 50:1. but on a high performance dirt bike it may be 30:1 it all depends on each machine you use. It …, Mixed Fuel Ratios. Echo used to specify a variety of ratios for its air-cooled, 2-cycle engines, including 32:1 and 16:1 blends. However, the company now specifies a 50:1 ratio for all their 2-cycle, air cooled engines, even if the original equipment manuals specified a different ratio. Echo states that improvements in oil formulations allow ..., The most common ratio for a weed eater gas mixture is 50 parts gasoline to 1 part oil, although this can vary depending on the manufacturer’s recommendations. It’s …, A weed eater carb diagram provides a visual representation of the carburetor, allowing you to identify its various parts and understand how they work together. The carburetor diagram typically includes labels for the fuel tank, throttle, choke, primer bulb, fuel line, and various adjustment screws. Each part plays a crucial role in controlling ..., Echo Grass Trimmer Operator's Manual. GT-2000 trimmer pdf manual download. Also for: Gt-2400, Gt-2400 type 1e, Gt-2000 1e, Gt-2400, Gt-2400 1e. ... IMPORTANT Echo Premium 2-Stroke Oil may be mixed at 50:1 ratio for applica- tion in all Echo engines sold in the past regardless of ratio speci- fied in those manuals. Mixing Instructions 1., Summary: grass trimmer fuel mixture Using the right fuel mixture in your grass trimmer protects it from damage such as piston seizure We recommend using STIHL 1:50 2-stroke engine oil with gas , at a mix ratio of 1:50 – 1 part oil to 50 parts of petrol If you’re using a different brand of oil, make sure it has the TC classification., If you have been using the wrong mix in your weed eater, all you need to do is swap to the right mix. So, if you still have gas in the gas tank of your weed eater, pour it out and fill it with the right mixed fuel. You should quickly notice a significant improvement when operating your weed eater with the right gas. … See more, STIHL String Trimmers use a 50:1 fuel mixture of gas and 2-cycle engine oil. An unleaded gasoline with a minimum 89-octane rating and maximum 10% ethanol content is mixed with a 2-cycle engine oil that is ISO-L-EGD and JASO M345 FD certified. Take caution when working with gasoline and follow safety guidelines found in the operator’s manual. , 8 Apr 2020 ... Chainsaw weedeater blower mixing gas., Your Craftsman 2-cycle string trimmer uses a gas and oil mixture at a ratio of 40:1. This means 40 parts gas is mixed with 1 part oil. Refer to the chart below. When creating this mix, use unleaded gasoline with a minimum octane rating of 89 (mid-grade) and maximum ethanol content of 10%.