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    79 40hp tach Q

    I found a 3 pin harness to plug into throttle assembly, and bought a telefax tach . I've got the wiring correct but getting no rpm signal on any of the settings. Is there a way to use a multimeter or some other method to test for an rpm signal? I'd like to test the wiring all the back to see if...
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    1979 merc 40 hp timing related Q's

    5366788 engine number, my understanding is a 1979. I need to set timing as i messed with all the cables, linkages etc.. I only have the seloc manual to reference. Is there a way to check idle and max timing without engine running? Such as pulling the plugs, grounding them, turning the engine...
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