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    how to install OMC electric priming system on 1977 1150?

    I am trying to install an electric priming system on my 1977 1150 inline 6, as recommended by most guys to erase the cold starting issue forever. I would like to use the choke button and power button for the electric primer, and only for the priming purpose. Anyone has experience on this...
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    Steering wheel hard to turn left than right

    I have checked many things but still no clue. 1. The boat is sitting on trailer, the outboard is 115 hp and sitting upright. The wheel is smooth and can be turned with one finger to turn right and left. But to left, I always have to use a stronger finger than to turn right. 2. On water, this...
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    outboard hard to idle at dock?

    It happened many times, especially when I tried to retrieve the boat at dock. Engine is 1977 1150 inline 6 mercury, boat is a 1977 boston whaler Newport. When in open water area, the engine idles forward and back very good, sometimes a little bit choke, most time no problem. It could only dies...
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    Remote Control and Steering Questions

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    Remote Control and Steering Questions

    I have an old remote control 37580A1/A2, the parts link is http://www.crowleymarine.com/mercury-outboard/parts/2182_50.cfm?q=37580a When running in a wave, the throttle will become slow if I don't keep pushing the handle. I am trying to find the friction adjustment in the control but can not...
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    Questions after new distributor trigger replaced

    It's a 1977 mercury in line 6 cylinder. I replaced a new CDI trigger for the old dead one. It runs good and idle no gear @1000rpm in water tank. Idle in forward gear @600-800rpm in water tank. But after the replacement, when I tried to relink and resync, I found out that I have to reset the...
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    Do I need to replace O-ring for tilt cylinder of 1977 115hp

    Hi, the tilt cylinder doesn't leak much. When I tried tilt up and down a lot, it can drop 5-10 drops in 1 hour. I can tell it from the garage floor. It works very well for the tilt job. And the oil in pump will be empty after 5 month because of the leak, I guess. I mean, in such case, is there...
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    distributor cap problem

    Cap pictures
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    distributor cap problem

    Finally I get to know it is the problem of distributor cap. It is a 1977 Mercury 1150 L6 with distributor. For the problem that happened two months ago, I have changed the switch, trigger, coil and the starter. And I also cleaned the carburetor again which I did 4 months ago. But it still can...
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    1977 115 hp, in line 6 cylinder, stopped suddenly with no hesitation

    The motor is 1977 115 hp, in line 6 cylinder, with distributor. Last week, I tested the motor at home before heading to the bay. Start easily. But at the ramp, the motor is very hard to start. After start the motor, the boat went out of the ramp site and the motor stopped suddenly without any...
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    should the fuel tank be built in the DIY deck or be good ventilated?

    Hello, boaters, I am going to build a rear deck to place my 24 gal plastic tank. I have a dealer deck with live well and middle pole seat. But it doesn't fit the tank. so I have to give up the live well and keep the middle seat. My question is can I build a concealed space for the tank. Or...
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    1977 Mercury 1150, now boat on water, several problems

    Jimmbo, 1. The carbs is set to be 1 1/2 turn from slight sit. It was set at 1 1/4 before, and it is almost impossible to start. Maybe it's still too lean? 2. I don't really know if they are all firing. How to test it? But those spark all spark when I tested. And they are all new sparks. Please...
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    1977 Mercury 1150, now boat on water, several problems

    After a few adjustment at back yard, I was satisfied with the motor running. This is a rebuilt motor, almost for everything. At back yard, it idles at rpm 900 with flush. Start is hard, even in 80F weather. About 30 seconds cranking, with throttle cable a little bit open. When starting, it roars...
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    cranking voltage check 12 v - 5 v fluctuate

    Today, I was ready for the lake test of my rebuilt 1977 mercury 1150. It was running good a week ago on flush. This week, I cleaned the boat and rewiring the dashboard, routing the cables and wires, and installed the electronics. Before I leaving for lake, I tried to test the motor. It won't...
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    1977 Mercury 115 rebuilt and video for idle run, suggestions please

    And one more question. There is water, easily felt by hand in the upper hole exit. Is it normal? I remembered, the combustion exhaust and water way at that height should be separated. I changed the gasket where the power head comes off. But never touch the combustion room.
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    1977 Mercury 115 rebuilt and video for idle run, suggestions please

    Thanks for the advice. As for the control box, I saw many videos about the cold start lever. My control box doesn't have that lever, but a button which engage only the throttle cable without the gear cable. In that case, how do I "cold start" with that control box?
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    1977 Mercury 115 rebuilt and video for idle run, suggestions please

    https://youtu.be/14KXTDQXjQE Hi, I posted a video for the idle run of the 1977 mercury 1150. I have concerns about the motor. 1. The water tail used to be very good. A very strong water stream. However after taking off the lower unit and put back again. It runs poorly as the video shows...
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    Timing light shows the same position for all the ignition lines.

    I am tuning with 1977 1150 inline 6 cylinders. When I use timing light with the top cylinder. It shows 1. 4 degree BTDC for primary pick up. ( manual suggests 4-6 BTDC). 2. 20 degree BTDC for max advance timing. ( Manual suggests 21 degree, but 20 degree maybe good too according to the gas...
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    Trigger or other problem for thunderbolt 1150 with distributor.

    The ignition worked after I purchase and install a new trigger in the distributor. Because I have a carburetor flooding problem. I replaced the float system. But when I hook them up, the flooding problem is gone. But there is no ignition for all sparks. I checked the switch & coil with the...
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    Carb leak and dripping, and the motor can not idle.

    Thanks, merc850, It seems I got a lot wrong information from surfing the web. One guy says to test if the charging system work, you can disconnect the battery while running. It keeps on running, the charging system works. The manual doesn't mention the idle ignition degree. It only mentions...
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