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MTD 115/76 Tecumseh 12.5 HP OHV Carburettor Issue
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Export threadYou sdid. I couldn't get any sign of a spark, so replaced the coil & spark plug but still no joy. Even removing the kill switch wire doesn't make any difference. Terry. There is no other way to test the ign module. Once you disconnect the kill wire and spin the engine over and check it with a spark tester and get no fire you have a bad coil. They either work or they don't work.
bertsmobile1
Lawn Royalty
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- Nov 29, 2014
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Out of curiosity can the coil be put on the other way round ?
The hall effect chip is polarity sensitive so the voltage generated in the coil generated has to be negative 0 then positive if it is + 0 - then you will get no spark
The only other thing is a bad magnet in the flywheel . very rare for this to happen .
The hall effect chip is polarity sensitive so the voltage generated in the coil generated has to be negative 0 then positive if it is + 0 - then you will get no spark
The only other thing is a bad magnet in the flywheel . very rare for this to happen .
Hi, thanks. I tried flipping the coil and still no spark. I think the magnet on the flwheel is ok as it grabs the coil when fitting & is difficult to prise apart to set the air gap. Thanks, Terry