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    Compression

    IMO the compression values are close enough to indicate the motor is good. I say run it.
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    Kill Switch Lanyard

    The Johnnyrudes of that era had a different kind of kill lanyard. When the lanyard is connected correctly, and you pull it, the button on the ign switch pops out and turns off the ign switch mechanically. Look for the small button (say less than 1/4") in the center of the kill switch...
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    Mercury Tempest, Turning Point Mach 3 or Michigan Wheel Apollo?

    I currently am running a 21 or a 23 P 3 blade TP Hustler. The 23P prop is a bit faster, but not a lot, and it is a little slower out of the hole. Top speed is in the low 60's, or high 50's, with stock prop and set up. The TP props are OK, but it may be that the Apollo and Tempest are a bit...
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    wall carpet replacement

    I have used cleaning vinegar in the Windex dispensers. It was not as strong as the ammonia that is generally used, IMO. I think the mold will laugh at the vinegar. I am happy to be wrong.
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    wall carpet replacement

    Most boats use a marine carpet for places like that. Marine carpet fibers are some form of plastic, which doesn't stain easily and is pretty tough. They will normally hold up to gasoline and oil without damage. I would try some hydrogen peroxide and see if it kills the mold. Use it on some...
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    Wiring a 3 wire trim/tilt pump to throttle handle switch

    Relays are used on 2 wire motors, as they are capable of reversing polarity. Relays provide ground to the PTT motor when not energized. When energized, relays provide power to the PTT motor. They typically use wires for secondary power, primary power, primary ground, secondary ground and...
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    Check/Fix/Replace Starter Motor 1996 50hp

    Generally speaking, when cranking an outboard, the battery voltage should not go below 8.5VDC. It is not a hard and fast rule, but if your battery shows 7VDC when cranking, it is likely failing. In your case, 8VDC when cranking does not prove the battery is good or bad. If I were you, I would...
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    Ruh-Roh… a new gear case may be in order

    Jim, If your engine is like my Johnny 150HPV6, the Waterpump consists of (in order from bottom) a gasket, stainless wearplate, Impeller w/ oring, plastic pump upper w/ Oring, plastic water tube w/a seal. All should be replaced as a maintenance item. Don't forget the gasket sealer, silicone to...
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    Ruh-Roh… a new gear case may be in order

    A complete replacement of the waterpump is a normal maint. item. Your waterpump upper is pretty rough. Much rougher that any ones I have replaced.
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    How to Run on stand

    A lot of OB charging systems need a battery attached so the diodes in the voltage regulator don't blow or short. So when wiring up power to the ECU, also make sure the voltage regulator has power on the charging wire as well.
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    Power trim stalling motor (hpdi )

    Gee, the helm mounted PTT switch powers the relays that power the PTT motor. I think the relays take about 3ADC. It certainly is not much more than that, although it is apparently enough to affect the engine running. The PTT functions fine from the motor mounted switch, which uses the same...
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    Mercury Tempest, Turning Point Mach 3 or Michigan Wheel Apollo?

    On the Sharrow, the best performance review I saw, which is likely lies, showed the Sharrow to be a few percent better than std SS props. At $2500+ and custom made, the Sharrow needs to be a lot better than the Eneria and the others for it to make sense to me.
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    Power trim stalling motor (hpdi )

    Gee, I was trying to help him find the source of the voltage drop that affects the running of the engine. HDPI engines use lots of power for fuel injection and ignition. When the voltage drops, bad things happen.
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    oil pump location on 90hp 2000 model merc

    #18 is usually driven by a gear on the crankshaft. I do not know if they are removeable. Also, on some models, the crankshaft gear is plastic, and subject to damage. I am not sure what your model has.
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    Power trim stalling motor (hpdi )

    The PTT switch on the motor is likely powered directly from the starter solenoid on the engine. About 2' of wire which is pretty well protected from the elements and accessible for inspection. The control mounted PTT switch is powered by the boat harness positive wire, or perhaps a dedicated...
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    oil pump location on 90hp 2000 model merc

    Oil Injection on 2 cycle carb or EFI outboard engines is done justbefore the fuel hits the carbs or injectors. Trace your fuel line out of the fuel pump, and before it gets to the carbs, you should see a tee, where the oil is pumped into the fuel line containing gasoline. See diagram. Part...
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    Check/Fix/Replace Starter Motor 1996 50hp

    You can usually test the spark timing with all but one of the spark plugs removed, and a timing light on the remaining spark plug, in the top cylinder. Joe Reeves was an iBoats member who worked at OMC for a long time and published a timing procedure for OMC products that doesn't require their...
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    How to kill mold on billge/engine surfaces

    Gee, Straight bleach has never failed me and usually overperforms. I use any generic bleach I can get for a good price. Stronger bleach/chlorine is not necessary in my experience. Exercise caution when using any chlorine product. Remember the first poison gas used in WWI was Chlorine...
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    Lowe 185 Ski & Fish with Verado 150 – bow won’t lift

    I saw that in the photo. They way it looks in the picture is that it will direct water flowing over it, down, causing the bow to plow somewhat. I don't think it alone is responsible for the bow plowing, however. The strait edge test should tell the tale.
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    Check/Fix/Replace Starter Motor 1996 50hp

    So it cranks well with the spark turned off, but when spark is on, she won't crank well? I would check the spark timing. If too advanced, it can overpower cranking, when the spark plug fires too soon.
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