HCA-266 OPERATION
X7502028600 15
© 10/2014 ECHO Inc.
Fuel
Alternative fuels, such as E-15 (15% ethanol), E-85 (85% ethanol) or any fuels not meeting ECHO 
requirements are NOT approved for use in ECHO 2-stroke gasoline engines. Use of alternative fuels 
may cause performance problems, loss of power, overheating, fuel vapor lock, and unintended 
machine operation, including, but not limited to, improper clutch engagement. Alternative fuels may 
also cause premature deterioration of fuel lines, gaskets, carburetors and other engine components.
Fuel Requirements
Gasoline - Use 89 Octane [R+M/2] (mid grade or higher) gasoline known to be good quality. Gasoline may 
contain up to 10% Ethanol (grain alcohol) or 15% MTBE (methyl tertiary-butyl ether). Gasoline containing 
methanol (wood alcohol) is NOT approved. ECHO brand Power Fuel
™
 is 93 octane, ethanol-free fuel 
premixed with ECHO Red Armor
®
 engine oil at 50:1 ratio. Use of ECHO Power Fuel
™
 is recommended to 
extend engine life in all air-cooled 2-stroke and 2/4-stroke hybrid engines.
Two Stroke Oil - A two-stroke engine oil meeting ISO-L-EGD (ISO/CD 13738) and J.A.S.O. FD
 Standards 
must be used. Echo brand premium Power Blend X
™
 Universal 2-Stroke Oil meets these standards. Engine 
problems due to inadequate lubrication caused by failure to use an ISO-L-EGD (ISO/CD 13738) and 
J.A.S.O. FD
 certified oil, such as Echo premium Power Blend X
™
, will void the two-stroke engine warranty.
Echo premium Power Blend X
™
 Universal 2-Stroke Oil may be mixed at 50:1 ratio for application in all Echo 
engines sold in the past regardless of ratio specified in those manuals.
Handling Fuel
Fuel is VERY flammable. Use extreme care when mixing, storing or handling, or serious personal 
injury may result.
• Use an approved fuel container.
• DO NOT smoke near fuel.
• DO NOT allow flames or sparks near fuel.
• Fuel tanks/cans may be under pressure. Always loosen fuel caps slowly allowing pressure to 
equalize.
• NEVER refuel a unit when the engine is HOT or RUNNING!
• DO NOT fill fuel tanks indoors. ALWAYS fill fuel tanks outdoors over bare ground.
• DO NOT overfill fuel tank. Wipe up spills immediately.
• Securely tighten fuel tank cap and close fuel container after refueling.
• Inspect for fuel leakage. If fuel leakage is found, do not start or operate unit until leakage is 
repaired.
• Move at least 3 m (10 ft.) from refueling location before starting the engine.