X7502257007 17
© 4/2016 ECHO Inc.
SHC-225/S OPERATION
Fuel
Diesel fuels and 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 
diesel or 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. Diesel or 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. M345-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.