Do you have to use 89 octane on a hitachi leaf blower

Would say 40:1 newer models are going to 50:1 with 89 octane.

change the spark plug--put fresh fuel in gas tank 89 octane mix

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old fuel--put new mix 89 octane fuel

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/david_2f6e03df6c124197

Almost every leaf blower uses gasoline mixed with 2-cycle mixing oil. Unless you have a larger, commercial model with a separate oil tank, you'll need to purchase mixing oil and mix it with your fuel. You can find mixing oil at PartsBuggy.com.

2 stroke means that it is a gas mixture. 4 stroke means that there is no gas oil mixture.

Fuel is VERY flammable. Use extreme care when mixing, storing or handling, or serious personal injury may result.

A 50:1 ratio with 89 Octane fuel can be used in all ECHO 2-stroke equipment, provided the oil is ISO-L-EGD and JASO M345 FC/FD certified. ISO-L-EGD and JASO M345 FC/FD oil must be used with a mid-grade (89 octane) or premium gasoline in all 1997 and newer engines.

A 50:1 Ratio = 1 US Gal. 89 Octane + 2.6 fl. oz. ECHO POWER BLEND OIL

Echo Power Blend Universal 2-Stroke Oil can be used in all of our 2-cycle air-cooled equipment ever made. You may also use this oil in any other brand of 2-cycle air cooled equipment, but it should always be mixed at the 50:1 ratio whether or not it was a 32:1 or 16:1 etc. machine. This oil is the highest quality 2-cycle oil on the market today. There is no need to have more than 1 tank of fuel for your 2-cycle equipment any more.

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IF it says 4 CYCLE then it uses regular gas.(87-89 octane unleaded) Another sign to prove it's 4 cycle it should have a crankcase you keep filled with oil.

its better to use the rated octane more often known as "Regular" higher octane will cause damage and could be dangerous

Here it is straight from ECHO:

Link is http://www.echo-usa.com/faqs.asp


A 50:1 ratio with 89 Octane fuel can be used in all ECHO 2-stroke equipment, provided the oil is ISO-L-EGD and JASO M345 FC/FD certified. ISO-L-EGD and JASO M345 FC/FD oil must be used with a mid-grade (89 octane) or premium gasoline in all 1997 and newer engines.
A 50:1 Ratio = 1 US Gal. 89 Octane + 2.6 fl. oz. ECHO POWER BLEND OIL
Echo Power Blend Universal 2-Stroke Oil can be used in all of our 2-cycle air-cooled equipment ever made. You may also use this oil in any other brand of 2-cycle air cooled equipment, but it should always be mixed at the 50:1 ratio whether or not it was a 32:1 or 16:1 etc. machine. This oil is the highest quality 2-cycle oil on the market today. There is no need to have more than 1 tank of fuel for your 2-cycle equipment any more.

GAS-- Use 89 octane r+m over 2 (mid grade or higher) This gasoline known to be good quality. Gasoline may contain up 10 15% MTBE (methyltertiary-butyl ether). Gasohol containig methyl alcohol is not approved.

TWO STROKE OIL-- 50: 1 is usable.

please rate and god bless.

bad fuel is prob your culprit, drain tank and carb and add fresh 89 octane gas oil mix, check for broken fuel lines and clogged inlet screen inside the carburetor. hope this helps