... Echo PB-251 Blower Won't start. I have checked the spark,the compression the muffler exhaust, primer bulb and the fuel lines. it had no spark so i installed a new ignition module and set the clearance at 15 thousands. Echo PB620-ST Leaf Blower: No spark. There is a lot of confusion about which spark plug to buy due to it having multiple part numbers (this spark plug is used in various Echo products like weed trimmer, leaf blower, chainsaw, etc.) and it still does not produce any spark.I also disconected the kill switch and still nothing. I am troubleshooting a recent problem with my Echo PB-400e (serial 224581) where it won't start. No Spark. Next Last. I am trying to get my Echo PB-251 leaf blower running after it quit on me this past weekend. echo 400e blower no spark. Ive replaced the plug, ignition module and spark plug wire, cap and plug spring, but I still cant get any spark out of it. If you have a weak spark, try cleaning, regapping, or replacing the spark … 1 of 2 Go to page. Go. For clarification, please note that Echo PB-413H leaf blower uses: Spark plug made by NGK; I figured this would be a good crash course and help me to improve the 2-cycle skills that I do NOT have. Air, spark, fuel - that simple, right? If you don't have a spark, you probably have to replace the ignition coil/module. Location Wallingford,pa. I have a Model C950-52052-0 11HP 30 inch Craftsman Snowblower that will not start. It is such a simple system and yet I cant figure out why. Faulty Ignition Coil. An ignition coil is a small component in the engine of a leaf blower. I have an echo backpack blower . Yesterday the spark was weak but the blower started. How to Test the Coil on a Leaf Blower. help please . Your model may vary, but the procedure will be similar. I have put in a new plug and still no spark. There's a good YouTube video that shows how to replace a lawn trimmer ignition coil. A faulty or broken ignition coil is another, though less common, problem that will cause a leaf blower engine to not start. 18 years old Not for me. Weak Spark. If your leaf blower has fuel but fails to start, either the ignition coil, the spark plug lead, or the spark plug is faulty. May 22, 2011 #1 i have a leaf blower here and cant figure out why it doesnt have spark. Today thre was no spark so I replacewd the spark plug but still … read more Typically the spark arrestor is very easy to access. I suspect that it is the ignition coil or the CDI module. Thread starter bikerpbl; Start date May 22, 2011; 1; 2; Next. If you’ve already checked all of the above (especially testing the spark plugs) your blower may need a … There is no spark to the plug. I set the module off the flywheel the same distance as the old one (dont have my glasses to read the gauge). This blower has me baffeld. B. bikerpbl LawnSite Member. 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