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  1. Z

    402 merc wiring ?????

    I just totally rewired a 402 40hp merc electric start. replaced most everything.stator,rectefier&switchbox.I am finally firing at spark plugs! my question to someone is,should voltage be present at the orang or salmon colored terminal on switchbox? I am getting about 8 volts dc with key in on...
  2. Z

    deadinthewater

    can someone tell me what model motor i have?its a 402 mercery 40hp seral #3476769.i cannot get fire to sparkplugs,i have replaced stator and rectofier.can you check switch box with standard test equipment. dvom,test lights????? i need a good wiring diagram. spins over good.... help.
  3. Z

    74 model 402 merc. 40hp not firing help please..

    I had this boat given to me, but it was a basket case.all the wiring was rotten.I rewired the internal harness,repaced stator,rectefier.........it spins over by key good.sounds strong.what next????? switch box? trigger coil,ign.coils.I'm a electrician but I do not know how to check this stuff...
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