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Questions and Answers for ECHO 21.2 cc Gas 2-Stroke Straight Shaft String Trimmer. Internet # 100675439Model # SRM-225Store SKU # 306575. Hover Image to Zoom. 21.2 cc Gas 2-Stroke Straight Shaft String Trimmer. by. ECHO (11492) Questions & Answers . ECHO SRM-225 pro-grade lawn trimmer for a well-groomed lawn;Amazon just announced a lineup of new Alexa-enabled Echo devices. Amazon has unveiled an expanded line of Echo products that are set to change the landscape of the home tech market...It starts easily and quickly converts from a blower to a vacuum/shredder, saving homeowners time, space and effort. TOP FEATURES. Three tools in one: easily converts from blower to vacuum/shredder. Patented 4-blade shredding mechanism reduces debris by a ratio of 12:1. 25.4 cc professional-grade, 2-stroke engine. 4.5.Be aware that, at 24.5 lbs, the Echo PB-8010T is on the heavier side of gas-powered backpack blowers. Engine: The engine boasts a displacement of 79.9cc. Please note that, because the Echo PB-8010T's engine is a 2-cycle one, it runs on a mixture of oil and gasoline. According to Echo, the proper fuel mixture ratio for this blower is 50:1.Fuel containing more than 25% ethanol is NOT approved for use in ECHO 2-stroke gasoline engines. Fuel containing more than 25% ethanol may cause performance problems, loss of power, overheating, fuel vapor lock, and unintended machine operation, including, but not limited to, improper clutch engagement.Use caution when handling fuel. Mix and pour fuel outdoors where there are no sparks and flames. Slowly remove the fuel cap only after stopping the engine and allowing the chain saw to cool. Do not smoke while fueling or mixing fuel. Move the chainsaw at least 10 feet (3 m) from the fueling point before starting the engine.ECHO Barrier and Harness Ring Product Knowledge Video. Tackle the toughest jobs with ECHO's best-in-class, commercial-grade outdoor power equipment. Find out more today.operation, or maintenance of this product, call the ECHO Consumer Product Support Department at 1-800-432-ECHO (3246) from 8:00 am to 5:00 pm (Central Standard Time) Monday through Friday. Before calling, please know the model and serial number of your unit. Product Registration Register your ECHO equipment on-line at www.echo-usa.com or by fillingThe ECHO X Series CS-2511TN 12 in. chainsaw is the lightest gas-powered top-handle chainsaw in North America with the most power in its class. The 25.0 cc professional-grade engine delivers incredible ... 12 in. 25.0 cc Gas 2-Stroke X Series Top Handle Arborist Chainsaw with Low Vibration SpeedCut Nano 80TXL Cutting System (6) ...Most chainsaw manufacturers recommend a 50:1 ratio. That means for every 50 parts of gas, you mix in 1 part of two-stroke oil. It's like making your grandma's famous soup — the right ingredients in the right quantities. Gasoline (in gallons) Two-Stroke Oil (in ounces) 1. 2.6.Echo PowerBlend Gold is a semi-synthetic blend 2-stroke engine oil that mixes at a 50:1 ratio with 89 octane or higher gasoline. Specially-formulate additives protect engine against rust, wear and corrosion and minimize exhaust port blockages. Fuel stabilizers allow mixed fuel to remain stable up to 1 month in a properly-sealed container.829447 - Echo Red Armor 2-Stroke Engine Oil Page 3/7 Issue Date: 17-Mar-2017 Status: FINAL storm drains, other unauthorized drainage systems, and natural waterways. Use water sparingly to minimize environmental contamination and reduce disposal requirements. If spill occurs on water notify appropriate authorities and advise shipping of any hazard.operation, or maintenance of this product, call the ECHO Consumer Product Support Department at 1-800-432-ECHO (3246) from 8:00 am to 5:00 pm (Central Standard Time) Monday through Friday. Before calling, please know the model and serial number of your unit. Product Registration Register your ECHO equipment on-line at www.echo-usa.com or by fillingEcho pb 500t gas mix. 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. How much oil do I need for a 50 to 1 ratio?2.6 For a 50:1 ratio of gas to oil, use 2.6 fluid ounces of oil per ...Welcome to the ECHO family. This ECHO product was designed and manufactured to provide long life and on-the-job-dependability. Read and understand this manual as well as your attachment operator's manual and SAFETY MANUAL (if available) before operation. You will find these manuals easy to read and full of helpful operating tips and SAFETY messages.Fuel Mixture ratio 50:1 ratio with ECHO brand two-stroke oil. 89 octane unleaded. Do not use fuel containing methyl alcohol, more than 10% ethyl alcohol or 15% MTBE. Tank Capacity liter 0.25 (8.6 fl oz U.S.) Oil Bar and chain ECHO bar and chain oil (or motor oil) Tank Capacity liter 0.15 (5 fl. oz. U.S.) Guide bar Saw chainSite www.echo-usa.com. When presenting your unit for Warranty service/ repairs, proof of purchase is required. ECHO Consumer Product Support If you require assistance or have questions concerning the application, operation, or maintenance of this product, call the ECHO Consumer Product Support Department at 1-800-432-ECHO (3246) from 8:00 a.m. toECHO Red Armor Fuel Product Knowledge Video. Related Content. ... Users who buy ECHO need to be rewarded with what they need most. Performance. The Red Armor® family is designed exclusively for ECHO to deliver the ultimate performance for your outdoor power equipment. These best-in-class solutions offer a wide array of outdoor applications and ...Service. Service of this product during the warranty period must be performed by an Authorized ECHO Service Dealer. For the name and address of the Authorized ECHO Service Dealer nearest you, ask your retailer or call: 1-800-432-ECHO (3246). Dealer information is also available on our Web Site www.echo-usa.com.Ryobi string trimmers require unleaded gasoline with a minimum octane rating of 89 and a maximum ethanol content of 10% (E10). If your Ryobi trimmer has a 2-cycle engine, mix a 2-cycle premium oil with the gas before adding it to the fuel port. Avoid gasoline that includes ethanol contents greater than 10% including fuels sold as E15, E30, or ...What is the fuel mix ratio for the echo pb-2100? I have a pb 2100 made in 2000 all my echo prouduct's call for 89 octane fuel and echo two stroke oil mixed 50-1 .Summary of Contents for Echo PE-200. Page 1 Power Edger Operator's Manual MODEL Read rules for safe operation and instructions carefully. ECHO provides an Operator's Manual and a Safety Manual. Both must be read and understood for proper and safe operation. X7702275300 PE-200 Serial Number 05001001 - 05045500...Debris doesn’t stand a chance. ECHO battery and gas-powered blowers make cleanup a breeze.For questions about service and repair, please call Echo at 1-800-432-ECHO or reference the Service & Repair document; 110 oz. can of ethanol-free 93 octane pre-mixed fuel; Recommended for use in all air-cooled 2 cycle engines; Compatible with ECHO, Husqvarna, Shindaiwa, Stihl and other equipment brands; Protects against future carbon build-upsFUEL • Fuel used for 'this model is a mixture Of regular leaded grade gasoline and ECHO brand motor Oil Mixture ratio 32 1 ratio With ECHO oil or 50 ratio With special oil approved dv ECHO Fuel mixture at a ratio other than directed may cause malfunction Of the engine. Pour 1 2 of the gasoline into a safe container, add oil and mix thoroughly.Shred 'N' Vac® professional leaf blower, vaccum and shredder clears leaves and other garden debris quickly and efficiently. It also shreds the material, reducing its volume 12:1. Combining 3 functions into the convenience of one, professional quality, light weight tool. Blowing, vacuuming and shredding leaves with ease.10 % of ethyl alcohol. • Recommended mixture ratio; 50 : 1 (2 %) for ISO-L- EGD Standard (ISO/CD 13738), JASO FC grade and ECHO Premium 50 : 1 oil. - Do not mix directly in engine fuel tank. CAUTION - Avoid spilling petrol or oil.Product Support Department at 1-800-432-ECHO (3246) from 8:00 a.m. to 5:00 p.m. (Central Standard Time) Monday through Friday. Before calling, please know the model and serial number of your unit. Product Registration Register your ECHO equipment online at www.echo-usa.com or by filling out the product registration sheet included in this manual.1-16 of over 1,000 results for "echo gas trimmer parts" Results. Repower Fuel System Maintenance Tune-Up Fuel Line Air Filter For Echo SRM225 GT-200R PE-200 PPF-210 SRM-210 SRM-210SB SRM-211 SRM-2100 SRM-2400 GT-2000 Weed Eater Trimmer PB250LN PB-250 ES250 Blower. 4.5 out of 5 stars.Echo premium Power Blend TM Universal 2-Stroke Oil may be mixed at 50:1 ratio for application in all Echo engines sold in the past regard-less of ratio specified in those manuals.For example, the Echo CS 400 fuel mixture requirement is 50:1. For 1 gallon of fuel, you must mix (128/50) 2.56 oz of motor oil. After rounding the figure, it becomes 2.6 oz. Each bottle contains 2.6 oz of oil. …If you own a 2-stroke engine, you know how important it is to mix the right amount of oil with your fuel. The correct oil-to-fuel ratio ensures optimal performance and longevity of...As technology continues to advance, smart home devices like the Amazon Echo have become increasingly popular. With its voice-controlled assistant, Alexa, the Amazon Echo has transf...GMSLuu Handheld Gas Blower, 2-Stroke Gas Powered Leaf Blower, 750W 25.4cc Gasoline Grass Sweeper for Lawn Care, Snow Blowing & Yard Cleaning, Heavy Duty Grassland Cleaning Machine dummy Husqvarna 150BT Gas Leaf Blower, 51-cc 2.16-HP 2-Cycle Backpack Leaf Blower, 765-CFM, 270-MPH, 22-N Powerful Clearing Performance and Ergonomic Harness SystemWhat is the fuel mix ratio for the echo pb-2100? I have a pb 2100 made in 2000 all my echo prouduct's call for 89 octane fuel and echo two stroke oil mixed 50-1 .• Recommended mixture ratio; 50 : 1 (2 %) for ISO-L- EGD Standard (ISO/CD 13738), JASO FC grade and ECHO Premium 50 : 1 oil. - Do not mix directly in engine fuel tank. …Incorrect gas-to-oil mixtures can cause serious engine problems in your chainsaw. Getty. Your Echo chainsaw is a two-stroke engine that takes a mixture of unleaded gasoline and two-stroke motor oil at a ration of 50 to 1. This mixture equates to one gallon of gasoline to 2.6 ounces of the two-stroke motor oil.Page 15: Fuel Recommended mixture ratio; 50 : 1 (2 %) for ISO-L-EGD Standard (ISO/CD 13738), JASO FC, FD grade and ECHO Premium 50 : 1 oil or 25 : 1 (4 %) for JASO FB grade oil. - Do not mix directly in engine fuel tank. Page 16: Operation Stopping the engine WARNING If engine does not stop, close choke to stall engine. ©05/2023 ECHO Incorporated. Service. SerThe popular, professional-grade PB-770T backpack blThe ECHO PPF-2620 pole chainsaw features a 25.4 cc 2-stro
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Operator's Manual MODEL HC-150. Hedge Clipper. Operator's Manual. MODEL HC-150. X7532247005 X753002865 12/11. warning. Users of this equipment risk injury to themselves and others if the unit is used im- properly and/or safety precautions are not followed. ECHO provides an operator’s manual and a safety manual.Replacement Operator, Safety Manuals, and Parts Catalogs are available from your ECHO dealer or at www.echo-usa.com or by contacting ECHO Inc., 400 Oakwood Road, Lake Zurich, IL 60047 (800-673-1558). Always check the ECHO Web Site for updated information. Safety Videos are available from your Echo dealer. A $5.00 shipping charge will be ...Site www.echo-usa.com. When presenting your unit for Warranty service/ repairs, proof of purchase is required. ECHO Consumer Product Support If you require assistance or have questions concerning the application, operation, or maintenance of this product, call the ECHO Consumer Product Support Department at 1-800-432-ECHO (3246) from 8:00 a.m. toWhen it comes to purchasing a car, finding the right dealership is crucial. If you’re looking for a reliable Echo Park car dealership, you’re in luck. Echo Park has a wide range of...Pro-Torque String Trimmer Attachment with 17 in. Cutting Swath for ECHO Gas or Battery Pro Attachment Series. Shop this Collection. Add to Cart. Compare. Top Rated $ 199. 99 (457) ECHO. 21 in. Hedge Trimmer Attachment for ECHO Pro Attachment Series Gas or Battery PAS Power Head. Shop this Collection. Add to Cart. Compare. Top RatedEcho CS-4400 Service Data Manual for repair and service of The Echo 4400 chainsaw. Workshop Manual is available as a PDF download ... ASPEN2 pre-mixed Alkylate fuel is best at 93 octane, no ethanol, has very long shelf life MIX OIL SPECIFICATION: ECHO two cycle. ISO-L-EDG. Jaso M345/FD ASPEN Synthetic mix oil is best CHAIN PITCH: .325 in. BAR ...Echo 6450001 Power Blend 1 Gallon Oil Mix (50:1) 6 Pack ... Echo 16 in. 34.4 cc Gas 2-Stroke Engine Rear Handle Chainsaw - CS-3510-16. **CAN NOT SHIP TO THE STATE OF CALIFORNIA** **ORDERS WILL BE CANCELLED** The lightest chainsaw in its class, ideal for storm clean up and mid size tree felling, it powers through with reliability and ...What is the fuel mix ratio for the echo pb-2100? I have a pb 2100 made in 2000 all my echo prouduct's call for 89 octane fuel and echo two stroke oil mixed 50-1 . I run the same mixture in my pb ...Since all 2-cycle small engines use the same fill port for both fuel and oil, a 2-cycle oil mix is necessary for your outdoor power equipment to function properly. Note: never mix oil and gas in the engine fuel tank. Only mix oil and gas in an approved fuel can. The Specific oil/gas ratio your small engine requires can be obtained in your ...Use a 50:1 ratio of fuel to oil mix for 2-stroke cycle engines, recommend using only fresh gas with a minimum octane rating of 89 or higher (mid-grade to premium) at all times; 50:1 ratio equal 1 US Gal. 89 Octane plus 2.6 fl. oz. ECHO PowerBlend gold oil or ECHO red armor oil; Bush trimmer features a 25.4 cc professional-grade 2-stroke gas engineEcho premium Power Blend TM Universal 2-Stroke Oil may be mixed at 50:1 ratio for application in all Echo engines sold in the past regard-less of ratio specified in those manuals.Highlights. For questions about service and repair, please call Echo at 1-800-432-ECHO or reference the Service & Repair document. 32 oz. can of Ethanol-free 93 octane pre-mixed fuel. Recommended for use in all air-cooled 2 cycle engines. Compatible with ECHO, Husqvarna, Shindaiwa, Stihl and other equipment brands.6 Pack of Echo Red Armor 2-Stroke Engine Oil 12.8 oz Bottle 50:1 Mix for 5 Gallons 6550005S-6PK Available for 3+ day shipping 3+ day shipping Echo Genuine OEM Oil and Gas Cap # COMBOShindaiwa string trimmers use a gasoline and oil mixture at a ratio of 50:1. 50 parts of 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 Shindaiwa.A complete solution to blowing, vacuuming and shredding fallen leaves and other debris. Powered by professional grade ECHO petrol engines, Shred 'N' Vac products provide the power and efficiency you need to get the job done. Switch quickly and easily between functions and shred to reduce waste volume by 12:1.Page 24: Servicing Information. • Purchasing from your Echo Dealer. • Manuals are available by sending a written request stating the model number and serial number of your Echo unit, part number of the manual, your name and address, and mail to the address below. View and Download Echo GT-200 operator's manual online.All told, it weighs 22.7 lbs — the Echo PB-580T is neither the lightest nor the heaviest gas-powered backpack blower on the market. Engine: The engine boasts a displacement of 58.2cc. Being that this is a 2-stroke engine, it must be fuelled using a mix of gas and oil. The proper fuel ratio set by the manufacturer for the PB-580T is 50:1.How many eyes do we want the world's largest online retailer to have in our homes? A different kind of question for Alexa. Amazon’s Echo Look, a selfie-camera-meets-AI-fashion-assi...The Mix Ratio for the Echo GT 200R. The Echo GT-200R nylon-line grass trimmer features a two-cycle engine that runs on a 50-to-1 mixture of gasoline and two-cycle engine oil. The gasoline should be a mid-grade unleaded fuel rated at 89 octane or better, with no more than 10 percent ethanol.The best 2-cycle oil mix comes from either Echo or Pennzoil. The 50-to-1 fuel mix gallons chart we've included makes it easy to mix the fuel you need for your 2-cycle oil-requiring machines! Summary. The best 2-cycle oil is the one from Pennzoil, as this company is known to make the best products in this industry. ...In general, the ratio of gas to oil is 50:1, which works out at 2½oz of oil to a gallon of gas. However, not all leaf blowers require the same ratio of gas to oil, and some require a ratio of 40:1, for example - so you should check your user manual to find out the correct proportions to mix. When mixing gas and oil for your leaf blower, take ...50:1, or 1 gallon of GAS to 2.6oz. of 2-stroke oil. What is the fuel mix ratio for the echo pb-2100? I have a pb 2100 made in 2000 all my echo prouduct's call for 89 octane fuel and echo two ...The Amazon Echo offers our first serious glimpse into the future of an intelligent home. It’s not perfect, but whether you’re you’re thinking of getting an Echo, hear people talkin...Read page 2 of our customer reviews for more information on the ECHO Red Armor 110 oz. 50:1 Pre-Mixed Ethanol Free 93 Octane Gasoline Fuel for 2-Stroke 2-Cycle Outdoor Power Equipment.View and Download Echo GT-251E operator's manual online. Echo Grass Trimmer Operator's Manual. GT-251E trimmer pdf manual download.Echo string trimmers with two-cycle engines require a mixture of gasoline and oil to keep the engine lubricated while it's running. Mixing the fuel components in the proper proportions is essential. If the mix ratio is oil-rich, the engine performs poorly; and if the mix is oil-lean, the engine can seize.Echo SRM-225 Review: CUSTOMERS FEEDBACK.Take advantage of the interchangeability o
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Operator’s Manual PAS-225/225SB/ 225VP/225VPB Pro Attachment Series™. The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. Read and understand all provided literature before use. Failure to do so could result in serious injury.View and Download Echo SRM-2100, 2110 operator's manual online. Echo Grass Trimmer/Brush Cutter Operator's Manual. SRM-2100, 2110 trimmer pdf manual download. Also for: Smr-2110 type 1e - 11-01, Srm-2100 type 1e - …Pro-Torque String Trimmer Attachment with 17 in. Cutting Swath for ECHO Gas or Battery Pro Attachment Series. Shop this Collection. Add to Cart. Compare. Top Rated $ 199. 99 (457) ECHO. 21 in. Hedge Trimmer Attachment for ECHO Pro Attachment Series Gas or Battery PAS Power Head. Shop this Collection. Add to Cart. Compare. Top Rated$334.99 Echo Backpack Blower PB-580T on Amazonhttps://amzn.to/2z61UrcHow to mix 50:1 Fuel Ratio for Echo back park Leaf Blower and other landscaping equipmen...Page 17 Stored fuel ages. Do not mix more fuel than you expect to use in thirty (30) days, ninety (90) days when a fuel stabilizer is added. Stored two-stroke fuel may separate. ALWAYS shake fuel container thoroughly before each use. X7722279201 ©3/2015 ECHO Inc. Page 18: Starting Cold EngineFuel Mixture ratio 50:1 ratio with ECHO brand two-stroke oil. 89 octane unleaded. Do not use fuel containing methyl alcohol, more than 10% ethyl alcohol or 15% MTBE. Tank Capacity liter 0.25 (8.6 fl oz U.S.) Oil Bar and chain ECHO bar and chain oil (or motor oil) Tank Capacity liter 0.15 (5 fl. oz. U.S.) Guide bar Saw chainFeb 18, 2023 · The 50:1 fuel mix ratio for Echo weed eaters is calculated as follows: 50 parts gasoline to 1 part of two-stroke engine oil. To mix the fuel and oil, you’ll need a clean gasoline container and a measuring cup specifically designed for measuring small quantities of liquids in fl. oz. Then do the calculations as per the guidelines.ECHO 90104Y SRM-230 Fuel System Kit Specs. Part Manufacturer: ECHO. Product Number: 90104Y-A. 90104Y-A 90104Y SRM-230 Fuel System Kit Manual and Additional Information. If you're unsure whether the "90104Y SRM-230 Fuel System Kit" is the right replacement part for your outdoor equipment, don't worry.ECHO Red Armor Oil is a premium 2 stroke semi synthetic engine oil formulated with powerful detergents and anti oxidants to clean existing deposits, protect against future carbon build up, and promote longer engine life.With unique fuel stabilizers blended in, the fuel stays fresh for up to 2 years in a properly sealed container.JASO FD registered and ISO L EGD compliant.Red Armor cleans and ...Product Support Department at 1-800-432-ECHO (3246) from 8:00 a.m. to 5:00 p.m. (Central Standard Time) Monday through Friday. Before calling, please know the model and serial number of your unit. Product Registration Register your ECHO equipment online at www.echo-usa.com or by filling out the product registration sheet included in this manual.Ryobi string trimmers require unleaded gasoline with a minimum octane rating of 89 and a maximum ethanol content of 10% (E10). If your Ryobi trimmer has a 2-cycle engine, mix a 2-cycle premium oil with the gas before adding it to the fuel port. Avoid gasoline that includes ethanol contents greater than 10% including fuels sold as E15, E30, or ...It starts easily and quickly converts from a blower to a vacuum/shredder, saving homeowners time, space and effort. TOP FEATURES. Three tools in one: easily converts from blower to vacuum/shredder. Patented 4-blade shredding mechanism reduces debris by a ratio of 12:1. 25.4 cc professional-grade, 2-stroke engine. 4.5.Read rules for safe operation and instructions carefully. ECHO provides this Operator's Manual, which must be read and understood for proper and safe opera-tion. X750012940 XX/XX X7501182000 InTroduCTIon Welcome to the ECHO family. This ECHO product was designed and manufactured to provide long life and on-the-job-dependability.ECHO knows engines and that's why Red Armor® Fuel Treatment was extensively tested and formulated with just the right mix of detergents, anti-oxidants and corrosion inhibitors without the use of alcohol based solvents to provide superior protection, corrosion prevention and fuel stabilization. Red Armor® Fuel Treatment is a formula rich with ...SRM-420ES/U. Extremely Powerful 41.5cm³ professional U handle brushcutter. Dry Weight (kg): 8.5. Engine displacement (cm³): 41.5. Output (kw): 1.8. ECHO brushcutters are robust, light weight, ergonomic and packed with features to make your work as effortless as possible. With trimmer head, Brushcutter by ECHO.Quick Summary. The gas mix ratio for the ECHO PB 580T is typically 50:1, which means 50 parts of gasoline to 1 part of oil. This ratio is recommended by ECHO for optimal performance and engine longevity. It is important to use a high-quality 2-stroke oil that is specifically designed for small engines to ensure proper lubrication and prevent ...The popular, professional-grade PB-770T backpack blower with tube-mounted throttle pushes an astonishing 756 CFM at 234 MPH to send leaves and debris out of sight, out of mind and off the workday to-do list. TOP FEATURES. Side mounted, heavy duty, dual-stage air filtration system for longer engine life. Padded shoulder straps and backrest.TruFuel. 110-oz 50:1 Ethanol Free Pre-Blended 2-Cycle Fuel. 1177. • 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.Looking for ECHO, 392 cfm Max. Air Flow, Gas-Powered Handheld Blower? Find it at Grainger.com®. ... Their engine provides consistent, all-day running power as long as it's fueled and properly maintained. Gas blowers are used in locations where their exhaust fumes won't be a hazard. Product Details Feedback. Compatible Products. Web Price. $306 ...Page 17 Stored fuel ages. Do not mix more fuel than you expect to use in thirty (30) days, ninety (90) days when a fuel stabilizer is added. Stored two-stroke fuel may separate. ALWAYS shake fuel container thoroughly before each use. X7722279201 ©3/2015 ECHO Inc. Page 18: Starting Cold EngineMixed 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 X Series ECHO SRM-2620 weed trimmer redefines the