I like to tinker with LawnBoy mowers. I have quite a few. More than once I have had issues with getting a spark, on the electronic ignition (pointless) coils, no matter what coil I put on. I was wondering if there was ever an issue of the magnets moulded into the flywheel can over a long period lose their magnetism thus not generating enough electricity in the coil to spark?
My Lawn-Boy repair manual (page 32) say weak flywheel magnets CAN cause weak or no spark. The 'remedy' says to see your authorized Lawn-Boy dealer, so they don't explain how to test for weak magnets.
Yes, magnets can loose their magnetism. That being said I have only seen it once in my 40+ years of working on engines. Does your magnet pull a screwdriver tight from a 1/4" away? If it does it is good.
Never cut one open but have read the coil pickup is electronic , meaning it may contain components such as transistor/capacitor in addition to the windings. If so the failure of the spark is more likely there due to heat damage of the transistor.
Never cut one open but have read the coil pickup is electronic , meaning it may contain components such as transistor/capacitor in addition to the windings. If so the failure of the spark is more likely there due to heat damage of the transistor.
