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    1987 Mariner V150 will not idle and dies in neutral, will run with lever up

    I was out fishing last weekend, boat was running fine. I ended a drift and started boat to move to pilings to fish. I was jogging the boat in neutral close to pilings while my friend fished off the bow. After jockeying the boat back in forth for several minutes in and out of gear to stay...
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    Carb rebuild questions for 1988 Mariner 150 and fuel system check.

    My carbs are in need of a rebuild on my 1988 Mariner 150 serial # OB279500. How involved difficult of a job is this, and where do I start to look for the rebuild kits? I am mechanically inclined and could handle the rebuild, but I am a little nervous about setting them back up and tuning them...
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    1987 Mariner 150 no spark on #2 cylinder? Thinking switch boxes are bad??

    I was going over my motor yesterday to prep it for the new season. Did a comp test 125 psi in all cylinders. Next I did a cranking spark test, all cylinders have spark except for #2. I haven't swapped coils yet but am already chalking it up to faulty switch box. The serial # is B279500. My...
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    1987 Mariner 150 Running rough at idle, lean sneeze on initial startup, and stalling

    Boat was not used for two years, and I finally launched it this spring and have been using it every weekend since fishing down the jersey shore. Few things I need answered. On initial startup I prime the bulb till firm, then crank motor over. Sometimes I can get it started fine, other times I...
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    HELP 88' Mariner 150 outboard peeing problems,stops peeing after 10min of idle time

    Stumped here, have a mariner 150 1988, just recently have had overheating problems. Peed fine before new poppet assembly. Poppet leaked, tightened the diapham screw,stopped leaking. Now the motor will run for 10-15 min then stops peeing and starts to steam???? Put in new water pump kit and...
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    Poppet valve install, now no pee and steam coming from tell tale?????????????????/

    Well I installed a new poppet valve yesterday and on start up observed water coming from vent hole, motor WAS peeing. Took poppet back out and had to tighten the screw into the diaphram more. Re install and start motor, problem fixed, no leak out of vent hole on poppet cover, motor WAS peeing...
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    Any special instructions when replacing a poppet valve on 88 mariner 150?

    Heading up to the boat in alittle while,and am going to replace the whole poppet valve assembly. Anything I should be lookin for? Seems pretty straight forward.
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    1987 Mariner 150 Lost intial beep beep when key turned to ON????????????????/

    Not sure what happened/caused this but I don't have the alarm anymore when you first turn the key tothe on position. It used to sound a beep. However my overheat alarm went off the other day. Is the oil and overheat sensors ran in conjunction with the ignition alarm when youturn the key? Any...
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    Looking for wiring diagram for black box located on port side of engine by head.

    Believe this box is the timing advance. I discovered that the tan wire is disconnected, and it should go to one of two screws at a terminal block located above the alarm module box closer to the top of the starboard side head. another problem I found is that there is another small black box...
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