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    What to do if electrical load exceeds charging system capacity?

    I'm replacing a fried Mercury rectifier/regulator p/n 815279-3 with a CDI 194-5279. (1994 40HP Mercury, s/n 0G084586, red stator.) As part of the battery charging system check, my Clymer manual says to determine if the accessory load on the battery is greater than the charging system's capacity...
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    How do I remove the spark plug wire from a coil?

    This is undoubtedly a dumb question, but what's the secret to removing a spark plug wire from a coil on a 40HP AD-CDI Mercury? I slid the boot back, and see the ignition wire has a small Ty-Wrap on it about 3/8" down inside the coil -- too deep to get a pair of dikes on it. I've pulled on it...
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    Help with ignition problem diagnosis, please?

    I'm working on a 1994 40HP 4cyl Mercury, s/n OG084586. Symptoms are sudden failure after running for about 40 minutes, then it won't start for days. Found no spark on any cylinder after failure. Stator resistance values, ground isolation, and cranking DVA at switchbox all check good. Trigger...
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    Mercury 40HP, bogus serial number

    I'm working on a 40HP Mercury that was apparently built up from scattered parts. It looks good, but the s/n on the transom mount appears to be 05084586, which, according to Mercury customer service, is from a '78 20HP motor. All I can tell from looking at it is it's a 2-stroke, 4-cyl motor...
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