Shindaiwa C35 - Any way to test ignition module??

Discussion in 'Mechanic and Repair' started by davefr, Jun 7, 2009.

  1. davefr

    davefr LawnSite Member
    from OR
    Posts: 5

    My C35 brush cutter won't start. I've ruled out fuel and compression. The coil tests good at <1 ohm primary and about 3k ohms secondary.

    However I don't see a visible spark. Is there anyway to test the solid state ignition module? It's located on the outside of the unit. At $55 + freight it's a little spendy to buy if it's not really the problem.

    Is there a foolproof way to test for spark? (I've been fooled before trying to observe spark from a plug outside the engine and grounded).
     
    Last edited: Jun 7, 2009
  2. 4.3mudder

    4.3mudder LawnSite Silver Member
    Posts: 2,227

    That is the way I have done many in the past and never had a problem.
     
  3. Breezmeister

    Breezmeister LawnSite Bronze Member
    Male, from South Jersey
    Posts: 1,532

    If you have the shroud off, just put the plug up against the cylinder and pull the recoil. I'll assume you have changed to a new plug, just to rule the plug out. And disconnect the switch, many years back I had a Shindawa that had a bad switch that was grounding out the coil. Run your fingers along the wires for any rough spots that might be rubbing against the tube or crank case. Rule all these things out and you still don't have spark.......:)
     
    ericg likes this.
  4. ed2hess

    ed2hess LawnSite Fanatic
    Posts: 13,138

    Just an FYI...my module on a Kohler test okay for impedence but no spark. I put another one same impedence and it worked fine. I am going to get a darn good spark tester. I tested mine in a dark room but sometimes you can have a weak spark and still have a problem. Or at least that is what my shop says.
     

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