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    2005 Evinrude 175

    Zinc Chromate is the best for all aluminum. I have used self-etching primer which is avail at home stores. It is pretty good. If you want a good job use a some Rustoleum marine enamel and spray it. Otherwise, rattle cans work OK.
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    Fuel gauge / sender….weird issue

    When the engine is on and the gauge is pegged, you are just sitting in neutral? If so, the engine charging voltage may be affecting the gauge. Make sure the grounds are good, and the sender wire is good as well. Of course, if the boat is moving my fuel gauge shows different readings as most...
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    Solar Power Installation . . .

    Gee, 100W max is not much for 7 batteries. That is a bit over 1A each in full sunlight. Can you increase the wattage? What was the cost of the system?
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    Durable Paint for My New Boat Deck??

    How about making the gel coat non-skid? It is a lot tougher than most paints.
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    2006 Yamaha SX230 Hard Initial Starts

    A lot of EFI motors run the fuel pump when the key is first switched on, to pressurize the fuel system. You can hear it run. So with the motor cold, turn the key on, wait a few seconds and then crank the motor to start. If that fixes it, you know what the issue is.
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    Control lever removal?

    You might look for a manual for it, if you know the brand. The ones I have had, either had to have the throttle-only button come off or had a set screw. See if the throttle-only button will pop off. If so, there can be a fastener under it. In the other control I had, the throttle handle had...
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    Tach non working on Mercury classic 50

    Glad it worked out. Mercury charges a arm+leg for rectifiers. Sierra is better, but they were a $10 part at radio shack, for a much better one. Tach setting is likely 6c or 12P whichever you have.
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    Please help 1975 mercury 200 20hp

    Prop is bad. Gearcase is OK to use, except for bent propshaft. It will be a real PIA to replace the propshaft, if you can find one for reasonable cost. Much easier to find a used gearcase and swap 'em. Not sure what you mean by shift lever broker.
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    1979 mercury shifts backwards after impeller replacement

    That is a common problem. The cure is to remove the gearcase, turn the shifter CCW until it clicks into neutral, set the control to neutral and reinstall the gearcase.
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    1984 35hp mercury steering part

    Along those same lines, sometimes the steering cable allows the motor to turn more in one direction. An adjustable length steering arm can fix that.
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    Silicone question

    Where fiberglass hulls meet their caps, silicone is often applied to seal the seam. This is usually covered by a rub rail. Not sure is aluminum boats get this treatment.
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    2006 Yamaha SX230 Hard Initial Starts

    If carb motor, is your choke (enrichener) working?
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    Blown fuse

    The fuse on a lot of motors runs starter solenoid, power trim and gauges. Look for a shorted purple wire, a melted purple wire or one with the insulation rubbed off. Check areas on the engine and boat where the wire runs thru the cowling. The control can also wear down the insulation, as...
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    Tach non working on Mercury classic 50

    That is a full wave rectifier. Move the tach wire to the other yellow wire terminal. If the tach works, replace the rectifier, as at least one diode is open.
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    1988 mariner 75 one cylinder not working

    Did you even look at the spark plugs? They can tell you a lot more than spraying ether into a carb. If you do use ether, have a fire extinguisher at your fingertips. If the motor catches fire and you use the extinguisher, the powder is real corrosive, and can get sucked into the cylinders...
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    Tach non working on Mercury classic 50

    John, What is the model number of the motor? How many wires on the rectifier? A full wave rectifier has 3 wires (red, yellow, yellow), plus the rectifier body is grounded. A half wave rectifier will have 2 wires, (red, yellow)
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    Tach non working on Mercury classic 50

    Jimmbo, My Mercury's from the 70s all had full wave bridge rectifiers, when did they change to half wave rectifiers?
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    Prop talk?

    Gee, why not get the SS prop fixed? Most prop shops will rehub them.
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    1988 mariner 75 one cylinder not working

    Inspect the spark plugs. If one is real clean, you may be getting water in that cylinder. Also, which cylinder drives the fuel pump? If the fuel pump diaphragm leaks, raw fuel can foul the cylinder. If you have spark, the coil pack is good, no?
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    Mercury Motor Mount upper 923373

    Sierra makes them for less $$. Solid mounts were used for racing purposes.
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