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    Hope outboard ain't too heavt

    Your IL6 plus outdrive weighed 650#. A lot of that is the outdrive which is at the stern of the boat. I expect the boat to float much higher with the OB.
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    Mercury 850

    A distributor ignition model derives spark from battery voltage. The stator only serves to charge the battery. So missing spark is not the stator's fault. At this age, a lot of the spark plug wires are bad and arc to ground. They are solid stainless steel wire cored, and should have zero...
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    Near new old 1996 Mercury 115

    Like any motor, if you buy the service manual, and read it, you will understand what repairs you can do with no diagnostic equipment, which you can do with reasonable-priced diagnostic equipment and those which require expensive diagnostic equipment. Optimax motors require dual pressure gauges...
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    Throttle and idle controls

    Grease the stainless steel ends of the cables where they ride into the brass cable barrels. There are a couple of plastic "knobs" that ride in the grooves of the throttle disc. See if they are broken or worn.
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    Mercury 850 1973 Aftermarket Tach

    A lot of the bridge rectifiers have a hole in their center. Find a spot on the front cowling support, above the switchbox and bolt it on. There are usually some holes around there. You could also probably find one of the original bolts on the rectifier will hold it. That way the wiring will...
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    RPM won't go over 4000

    What pitch prop and what boat is it on? It could just be overpropped.
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    Throttle and idle controls

    You do have neutral at midnight, right? If so, and your control does not operate as I have described, you likely need a new control or a repair on yours's.
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    Mercury 850 1973 Aftermarket Tach

    I am shocked that you cannot find a replacement. Sierra used to make them. Your rectifier was the old large beige ugly one with the three colors. A newer black square style will work just fine. Alternatively, find a 15A-25A bridge rectifier on the web for $5 and install it. Just remember...
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    Throttle and idle controls

    Sometimes they move more than you would expect. On a MerControl from that era, midnight is neutral. Forward can engage as late as 10 o'clock. (right hand control). As long as you get full throttle, say by 8 or 8:30 you are OK. There is no adjustment on the MerControls. Worn parts can be...
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    hydraulic jack plate

    Sounds like a fit, then.
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    Near new old 1996 Mercury 115

    Well, then you would be in the minority. I predict a dark future for direct injection 2 cycle OBs. e-TEC is already gone. Optimax is still being manufactured, for now. I couldn't easily find out if Yamaha HPDI is still being made, but it doesn't appear so. The reason IMO, is that 2 Cycle DI...
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    hydraulic jack plate

    The Jack Plate will be rated by motor HP. What is the Atlas rated for?
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    Paint Recommendations please

    Use a lambswool pad and a rotary polisher, plus some liquid rubbing compound. She will buff up real nice. Then coat it with some good wax to hold the shine as long as possible. You will need to repeat every season. Painting will really screw it up. Leave it as a last resort.
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    Is an aluminum steel prop better than stainless?

    Gee, I think it depends on how much stuff you hit, and what kind of boat you have. In our shallow bay (sand and silt bottom), you will grind up an aluminum prop, with an 19' I/O runabout. The I/O weight causes the boat to dig in upon acceleration. In that case a SS prop is better, as sand...
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    pAm I thinking correctly??

    In theory, adding 2 " of pitch decreases RPM abut 400. So an 11P prop should give about 5800RPM.
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    Looking to add a drain plug to a jon boat

    If you want a floor drain, get one with a scoop fitting on the exterior. The scoop deflects water under the boat a bit, so the drain hole is dry at cruising speed, allowing you to pull the plug while cruising. I don't readily find a picture of one, but if you picture a clam shell, like this...
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    Help with motor height adjustment

    Mark, I was not referring to the trim tab, although, it is true that the higher the motor the less effect the trim tab has on steering torque. I added a wedge to the skeg to make up for reduced effect of the trim tab, due to the motor height on my speedboat. I was referring to the trim of the...
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    Inline6 90 to 115 hp?

    The block of the 90HP il6 has different porting and likely different pistons than the 115HP il6. If you bought a 90HP powerhead, you have a 90HP motor.
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    Mercury 850 1973 Aftermarket Tach

    Fazt is suggesting that one of the diodes in your rectifier is shorted, grounding 1 of the yellow wires. This will half your charging rate and could cause a discharge of the battery when not running. You should test the rectifier. It is simply a bridge rectifier with the -DC post internally...
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    Near new old 1996 Mercury 115

    Starcraftkid, Not sure what century or world you are living in, but most/all of your statements are incorrect. The weight difference between new 4 cycle and 2 cycle direct injection motors is small or nil. Older 2 cycle motors may be lighter, but boats are rated for power, not weight. No one...
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