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    1974 Mercury 850 serial#4123383 / bad stator

    I recently picked up this 1974 Mercury 850. The wiring is toast and has rotted away. I removed all of the old wiring and used new wire to connect everything on the engine. With 12 volts (battery) connected - I have spark on all 4 cylinders. The stator is not putting out anything. My question...
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    1975 Mercury 500 / no spark help

    New to the forum and need some help. I have a 1975 Mercury 500 - serial number 3723346 ( confirmed 1975) I also have the Mercury service manual for the motor. I have no spark to the plugs. The manual describes the ignition system as " Lighning Ignition" - a Thunderbolt series. ( Has a...
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