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Parts Question

    Edward Skala
    I have a 55 Rancher 53cc 18 inch Husqvarna Chain Saw. I...Answeredescalated
    Parts Question posted January 21, 2012 by Edward Skala, last edited February 10, 2012 
    6999 Views, 3 Comments
    Question:
    I have a 55 Rancher 53cc 18 inch Husqvarna Chain Saw. I don't have a spark. I replaced the Spark Plug then I replaced the coil. The original coil has a part number 5039014-01. I went to the dealer and they got me a coil with a part number 5440184-01. After installing it, I still don't get a spark. The on/off switch is ok and I even tested for spark with the ground wire disconnected from the coil.
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    Best Answer

    Greg P.

     Edward,

    Thanks for contacting Husqvarna to post your question.

    The part numbers are correct. There is something else going on with the saw. Because you have checked the ground (very important) my next recommendation would be to check the air gap. Should be about .012". This is also very important. Next make sure you are using the correct spark plug . It must be a resistor plug. Check the flywheel key, to make sure it is not sheared. Disconnect the stop start switch, this will bypass it and will allow to check spark without interference from the switch.

    Answer

     

    • Greg P.

       Edward,

      Thanks for contacting Husqvarna to post your question.

      The part numbers are correct. There is something else going on with the saw. Because you have checked the ground (very important) my next recommendation would be to check the air gap. Should be about .012". This is also very important. Next make sure you are using the correct spark plug . It must be a resistor plug. Check the flywheel key, to make sure it is not sheared. Disconnect the stop start switch, this will bypass it and will allow to check spark without interference from the switch.

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    • Edward Skala

       Greg P.

      The original Spark Plug is a NGK(R) BPMR7A and from a dealer they sold me a Champion CJ8Y which I assume is a resister type. The air gap on the plug is .012. I did have the the ground wire off the stop/start switch. The gap for the flywheel magnets (which are good) to the coil is a dollar bill tickness. I even used a calling card thickness. The flywheel is fine and spinning the piston when I pull the cord. I put the spark plug in the spark plug wire and hold the plug to the engine head in a dark room and pull the cord fast. NO SPARK. When I bought the new coil from the dealer that had a different part number which you stated that they were the same and okay, I checked the resistence from the tip of the Plug wire to the coil core and the readings(.0067) were the same between the two (Original and replacement). I returned the replacement to the dealer which he almost didn't want to take back. The cost was around $70.00. I've worked on small engines many times but apparently not ones that are made by the swedes. What am I missing?  Thanks a bunch.

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      • mike krup


        I too own one of these and i have NO spark.  resistence is 6.71  (.00671)- but still not spark. Is it the coil pack or something else. Did he ever get that one running?

         

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