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  1. W

    Cannot stop engine with key switch.

    My 1989 70 hp Merc will not shut down when I turn the key off. I can kill the engine by pushing in the key (choke) and putting the engine in gear.<br /><br />The switch is new (about 3 months old) and the connections are clean.<br /><br />Any suggestions?
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    Charging 2 batteries at the same time

    I just checked the charge on the batteries on my boat. I switched my selector to 1 and the voltage to my Depth finder and my GPS read 12.3V. Switching to battery 2, the voltage was 11.7V <br /><br />Of course, the one that reads 11.7 is the hardest to get to. Both batteries are new, less than 2...
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    Merc 70ELPT 1989 model not charging

    My dash gauge shows 11.3 volts as does both depth finders. The gauges show the same whether the engine is running or not.<br /><br />Is there any way for a novice mechanic to trouble shoot the problem.
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    1989 Merc 70 ELPT cranks then dies.

    I pump up the primer bulb and can see gas in the gas filter but it drains back to the tank in a few seconds. As long as I pump the bulb, the engine will run. <br /><br />There are no gas leaks anywhere. I have not replaced the end fitting on the hose but it does not leak. The primer ball is...
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    Generic (or maybe OMC) keyswitch as part of boat wiring package?

    I have a 1980 Sea Nymph boat with a 1989 Merc 70hp. The wires in the harness going to the switch are Yellow/red stripe, Purple(3 hitched together) Black (2 hitched together)and 2 others (one may be B/w) Red/blue stripe. Solid red. Purple/white stripe.<br /><br />The switch is labled...
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    Need wiring diagram for '89 Merc 70 ELPTO

    The engine is almost new. Very low hours. Key switch failed and owner removed all wiring so the could take it to buy a replacement switch. Before he installed the switch, he died. The boat has been in storage for 13 years.<br /><br />Now I need a wiring diagram. I have both the old switch...
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