SOURCE: ECHO PB-650 Spark plug gap size
20 thousandths
Testimonial: "Thanks just what I needed great result thanks again"
SOURCE: need oil/gas ratio for Echo back pack lblower -
Since every engine is different the manufacturer almost always has it printed in the gas cap. It should look like 50:1 or 50/1 (50 parts gas to 1 part oil).
SOURCE: not getting fire to plug,replaced
With a good plug and a new switch there are a few remaining basic options. There is either a bad ignition coil or a bad wire or bad connection somewhere.
I hope this helps.
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