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  1. 7

    Will longer fuel line cause any probs with Merc 90

    Right now my tank is in the back of my boat with about 6 feet of fuel hose to the motor. I want to move the tank to under the console. The hose would then be 10 or 11 feet include primer bulb and filter. Would this cause any extra strain on the fuel pump or fuel starvation?
  2. 7

    Easier way to remove decals on engine?

    I am trying to remove the decals and residue of my Merc. so I can put new style ones on. So far, I used a hairdrier and peel off a lot but the letters remain. Seems like a layer of sticker was over the letters. There is a ton of residue left. I have used Goof Off but it required a ton of...
  3. 7

    tach and charging problem update

    My rectifier tested bad at the shop. The guy had a used one for $20 so I bought it. I bid on one online so I will have a spare. So I put it on and have tested while running the motor. 12.85v at 1200 RPM at the the rectifier and 12.65v at the battery, 12v at the fish finder on the dash. Tach...
  4. 7

    tach doesn't work & charging problem

    I hooked up my tach tonight that I used on a prev. motor. tach signal to grey wire. It wouldn't move. Hooked up meter to battery and had no increase in voltage while running. What is the link between no tach and no charge, stator or rectifier? Rectifier passed alt to + terminal test but not...
  5. 7

    weight of a 70HP Johnson?

    How much does a 1978 70 HP Johnson weight?
  6. 7

    What is the wire next to the # 1 spark plug?

    Is it for a tach? Is it terminal E on the instrument connector on the shifter? If the wire isn't was is it and which one is for the tach? It is an '84 90HP. Thanks! :cool:
  7. 7

    Getting bigger motor, strengthen transom?

    I sold my 70HP Johnson and will be putting on a 90HP Mercury from my Dad's boat. His transom is 3" thick. My transom is 2" thick. Do I need to strengthen the transom because of 20 more HP and additional weight? My transom is solid.
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