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How do you make a kill switch for a mower?

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βˆ™ 2007-06-30 07:50:23

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Any gasoline engine on lawn & garden equipment is killed by shorting out the coil, also known as the magneto, this is the part the spark plug wire comes from. Killing the engine is merely shorting it out, a ground wire, so you could actually run a toggle switch with a wire to the coil. If this happens to be a Briggs & Stratton they have a spade connection on the side of the coil you can connect to, Tecumseh has a wire ran from within. It is not clear above that you need to connect to the low voltage side of the coil. This will depend on the stype of motor, but you can short or open the points or open the ground for the magneto. Don't connect to the high-voltage wire going to the spark plug or you will be in for a nasty surprise when you go to use it.

2007-06-30 07:50:23
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