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  1. L

    Merc 75HP, 1986 output voltage

    Hi All, I was just wondering what the typical output voltage of these motors should be. Im trying to work out if the motor will charge the battery. The battery has enough to start the motor but my electronic battery charger indicates the battery has a fault. When the motor is running and...
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    1986- 75hp, 4 cylinder Fuel consumption

    Hi All, Just wondering if anyone would have an idea of what theroretical fuel consumption I should get with a 75HP, 86 Model Merc running at about 4500RPM. Its on the back of a Glastron V-156 so its not a haevy boat for the motor. It has no tach so Im guess RPM but not full throttle, engine...
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    Mercury Switch Box Failures

    Hi All, I really appreciate the input from members with the issues I have come across with my new to me 75HP 1986 2 stroke 4 cylinder Merc. Faztbullet you were on the money I appreciate you advice. After looking at the forum and doing a bit of a search it seems that switch boxes are a bit of a...
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    Thermostat on 4 cylinder 75HP, where is it

    Hi All, Just want to do a full service on the boat motor I have on a Glastron V156. Its a 75HP, 1986 model 4 cylinder 2 stroke, made in Belgium. Thought as part of changing the impeller Id also replace the thermostat but I cant find it. Is it possible it does not have one? If it doesnt have one...
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    How can you test a switch box on 4 cylinder 1986 model.

    Hi All, Just wondering if its possible to check if a switch box has started to fail. Been trying to find something but there really doesn't seem to be a black and white way to definitively determine it. The trigger plate is brand OEM part, and confirmed its not that. Depending on what you read...
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    No spark #2,3 & 4 on 75hp, 1986

    Hi All, Im new to these older larger outboards but looking for advice. I purchased a Glastron V156 as a bit of a project. It was fitted with a 1986 75HP Merc in good condition. Started straight away from cold stopped and started a few times no issues, idled perfect. Towed it about 600miles...
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