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  1. S

    1994 Mercury 115 hp - No Spark

    There's no spark at the plugs when turning over the motor. Removed what I thought was an ignition module (I now believe it might be the voltage reg) and could see burn marks on the circuit board. Dealer told me it was about to burn and that the board is fried. So I'm replacing it but I'm not...
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    79b Evinrude 115 Carb Issue

    "My engine (115999R) c "My engine (115999R) continues to idle poorly. We tried a set of carbs from a 79 Johnson 100 and it performed perfectly, so I believe we've narrowed it down to the carburetors. I have cleaned these things many times over. I can see fluid rushing out the idle orifices...
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    Lower Unit Measurement

    This is probably a dumb questi This is probably a dumb question but I'll ask it anyways. What are the measure points on the lower unit to determine whether it's a 20" or 25" shaft?
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    1999 Mercury 50hp 3 cyl 2Stroke Serial No

    Why does Mercury have to use a Why does Mercury have to use a marking system that fades over time? The number appears to be 6905214. Does that sound right? There also appears to be digit before the 6 but it looks like a zero. I need to order parts but with the Merc system I must know the...
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    Impellers

    "As a general rule of thumb, w "As a general rule of thumb, what is the timeframe in which an impeller on any outboard lower unit should be changed?"
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    99b Merc 50 Cooling issue

    "The alarm at the control box "The alarm at the control box goes off after long-idle, increase the rpm and the buzzer goes off. Also, I don't see water ejecting out the holes below the cover on the lower unit after running it in my backyard with muffs. Shouldn't I see that water ejecting...
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    79 Evinrude Rebuild

    Can I use my die taps for clea Can I use my die taps for cleaning out the various bolt-holes or do I need to use Thread Chasers?
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    79b Evinrude 115 Upper Main Bearing

    Is there not a replacement bea Is there not a replacement bearing for the upper crankshaft bearing? I've been looking and it appears that I have to purchase the whole assy at about $330. That's outraguous! Are there other options?
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    79 Evinrude Piston Skirt Clearance

    "I'm on a tight budget but "I'm on a tight budget but I don't want to do anything stupid either. With my engine rebuild I'm hoping to reuse the pistons and install new rings. What are your thoughts regarding max piston skirt clearance for a piston reuse? The book gives a range of .0045" to...
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    Evinrude V4 Flywheel Removal

    Does anyone have any suggestio Does anyone have any suggestions as to how to hold the flywheel in place while removing the large nut? I found a slotted flywheel puller that should work in pulling the flywheel after the nut is removed.
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    79 Evinrude 115 Wonbt Cooperate

    "It continues to stumble, lous "It continues to stumble, lousy idle, very difficult to start when cold, seems to run better when it gets above 2,000 rpm, sometimes stops dead in it's tracks (1,000 rpm to nothing in a fraction of a second). When attempting to start it sometimes takes hard hits...
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    Bad Fuel Pump

    "I'm running a 79' Evi "I'm running a 79' Evinrude 115 and I think I've discovered what may be causing the poor running...fuel pump gasket was torn. Since the pump is driven by the crankcase pressure, can a bad pump cause fuel to backfeed into the crankcase?"
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    b79 Evinrude 115 Float Setting

    Could someone please tell me w Could someone please tell me what the float setting should be or what the measurement on the float guage shows? I checked my floats today and noticed the top float was 3/32" less than the bottom float which means the top float is running richer and potentially...
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    1979 Evinrude PwrPack Verification

    "I'm trying to verify the "I'm trying to verify the diode in both Pwr-Pks. Manual says it should read some ohms in 1 direction and Infinity ohms in the other. I get the Infinity on both packs in 1 direction, but when I check the other direction I get about 1500 ohms when I first touch the...
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