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    1991 Mercury 200hp V6 Overvoltage and Dropping Power

    I'm having an issue with high voltage and motor dropping cylinders (power). Just had both switch boxes replaced (one tested bad) and the stator checked. Stator tested good. My mechanic indicated two cylinders were dropping out. BTW, compression at or about 110 on all 6. After the repair, it...
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    Johnson/Evinrude Trim Motor Replacement

    It seems that there are several 3-wire replacement trim motors available for the older V6 Johnson outboards. I have have a 1980 200HP Johnson and I'm needing to replace the motor. Does anyone have a preference? They can run from $70(Ebay)-$300 elsewhere. Iboats offers the Mallory, Sierra, or...
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    Compatibility of 1980 Johnson 200hp and 1982 150hp Motor?......Should I purchase?

    It looks like many parts are interchangeable? I can buy this 1982 150 locally in hopes of using some of the parts on my 200. The 150 overheated, but all of the ancillary parts are there except for the lower unit. What would be a fair price for this parts motor? Will the carburetors interchange?
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    V-6 Temperature Inconsistency..Overheat?

    I have an extreme difference in temperature readings between the port and starboard banks on my 1980 200hp Johnson. In cool 65 degree outside temperature, using a laser temperature tool, the port side is running at about 92 degrees, starboard at nearly 150 degrees after 15 min. idle. Here's...
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    1980 Johnson 200hp "Tell Tale" Problem

    Well, I have everything running well on this old motor...got rid of the rough idle, but now I'm concerned about potential cooling/water flow issues. I replaced the impeller several months ago, but now I'm seeing no water coming out of the exhaust leg (in the middle), only light smoke...
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    1980 200HP Johnson V6 Rough Idle (Sensor Coil?)

    Hi All: I'm working through a very rough idle issue. I have rebuilt the carburetors with kits and replaced one fuel pump. I feel comfortable that the fuel system is now solid. As background, compression is 90 lbs. on 5 cylinders and 95 lbs. on one. I'm moving to the ignition area supported...
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    Tricks to install electrical pins in connectors

    Can I get some advice on installing/removing pins in the waterproof connectors on a 1980 200HP Johnson? I purchased a couple of new coils and would like to install with new pins into the original connectors rather than splicing. The original manual I have shows some specialized tools, but I...
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    Water Pump Plastic Impeller Wedge--New Style

    Howdy: I need some clarification relative to the installation of the impeller wedge on a 1980 200HP Johnson with the new style pump housing. The plastic wedge, which acts as the key, goes with the narrow (tapered) end forward while turning the shaft clockwise...correct? This makes total sense...
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    200HP 1980 Johnson Compression?

    Well..I think I just recorded some bad news. I picked up a motor that had not been run for a number of years. Before spending much time on a tune-up, etc., I took a compression reading on all six cylinders. The readings varied from a low of 75 to a high of 90 on all six cylinders with most...
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    Trim/Tilt 1980-200HP Johnson O/B won't go down!

    No down tilt/trim action! Trim rams will not go in either. I feel like it's not an electrical issue since I've gone directly to the blk, grn, and blu wires feeding the trim/tilt motor. Motor runs fine in both directions. Tilts up, but not down. I've tried to push on the tail of the motor to...
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    Water Pump 75 HP 757HB (1976)

    Hi Everyone: I removed the lower unit for a seal replacement on my 75 HP and noticed there is no "Lower Water Tube". This is a plastic sleeve like doodad that fits on the water tube just before it goes into the top of the water pump housing. Currently, the water pump housing is a 474060 and...
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    1976 Chrysler 75 HP Alternator System

    Can a person run two Batteries in parallel with these motors? Sometimes we anchor and swim several hours using the stereo and accessories. Will the alternator charge two batteries at once or should I just have a completely separate battery?
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    1976 Chrysler 75HP Outboard Tachometer

    I need to get back to this project. It's almost Spring??? Last year I installed a new tachometer, but it seems to read significantly lower than it should. Possibly as much as 25%? It's a 20 pole, but I set it to the 12 position. The documentation I have (manual) shows that a '76 75 hp is a...
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    75 HP Starter, 1976, Prestolite

    While replacing the bendix, my starter (prestolite) came apart and I believe I have the 4 brushes out of place now. When I put back together, it has very little torque--like 1/2 power?? Are the brushes from each set of poles opposite of one another, if that makes any sense? The manuals make...
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    Stuck Bypass Valve

    Well, my 1976 75hp is still overheating. After about 10 minutes the tell tale quit delivering water. I have replaced the impeller (twice) and then the thermostat. The water pump housing looked good and then I ran water from a garden hose up the tube to the top of the block and it apppeared...
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    Thermostat Gasket Problem??

    On my 1976 75HP the Thermostat is not located under a 4-bolt cover. You have to actually split the head to get in to remove and replace the thermostat? The problem is that I cannot find a new gasket for that area. I destroyed the old one upon removal.. It's not even on the parts diagram...
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    Heating Up!

    1976, 75HP: Any ideas on overheating? I have a light on the dash hooked up to the thermoswitch on the head which comes on when at lower speeds/high speeds. I have replaced the impeller and water is coming out of tell-tale. I have ordered a new thermostat, but have yet to install. If water...
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    1976, 75HP on 1969 15' Glasspar

    Hi All: First time out after restoration, I had two significant problems. First, the motor overheated while doing some circles and cruising in a cove. Hot light came on and engine died. After a few minutes, it started up and we cruised again with no issues until coming into a marina idling...
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    Retracting Stern Light

    Remember the old style stern light pole that retracts into the hull and has a locking collar? Are they still available? I'm reworking a 1969 Glasspar and would prefer not to modify the hull. Maybe I can rebuild a used one? Thanks for any ideas.
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    1976 75HP Chrysler Remote Cables

    Hi: Are both the throttle cable and the shift cable the same on these outboards? I need to buy two new ones due to length. Looks like these were original. What style/model/number do I need to order? I know the length, but that's it. Thanks!
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