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    278* head. oops.

    Johnson 140 1990 I did something really dumb a few minutes ago. I was testing a new water pump and turned on my hose timer and then seriously lost track of time. First it didn't pee so i bumped the RPMs up a bit and it started cooling and i put it back in N. Shortly after the starboard head...
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    Drive shaft snapped (1990 140hp)

    Re: Drive shaft snapped (1990 140hp) edit: deleted dumb idea. replaced with a good one. You take a step back and look at it again the next day (no gin and tonic in hand) and suddenly the thing that made you crazy the previous day is so obvious. So here's how you make a pinion nut holder...
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    Drive shaft snapped (1990 140hp)

    Re: Drive shaft snapped (1990 140hp) After some more googling it is apparent that yes it really does need to be torqued properly. I wonder if one of those Gator Grip self adjusting sockets with the little rods that push in to set size would work? It seems like if I got lucky they would be in a...
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    Drive shaft snapped (1990 140hp)

    Re: Drive shaft snapped (1990 140hp) There are definitely no puller threaded holes on the outer rim supports of this gearcase like there are in post #6. This is a large case 15 spline V4 gearcase, but on my V6 geared large style gearcase (you may remember my wrong gear ratio lower unit debacle...
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    Drive shaft snapped (1990 140hp)

    Re: Drive shaft snapped (1990 140hp) You were actually correct it was 1/4 x 28. It turns out the rods were 20. I rigged this up and failed: It bent the crap out of the rods and i started to get concerned about the amount of lateral force on the prop shaft as the rods bent and the puller...
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    Drive shaft snapped (1990 140hp)

    1990 140hp I was running about 3k RPM last weekend when I heard a BANG clack clack clack then the motor smoothed out. I thought it sounded and felt a lot like what people describe clutch dogs shearing off as, but then I dropped the LU (after being towed home) and found this. Pulled off the...
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    1984 Mariner V-150 spark issues

    A family member just gave me a boat with a 1984 Mariner V-150 s/n 6533174. I've run it before but it's basically been in disuse for several years with the last time it was on the water over a year ago. Now it's got some problems from sitting around in a driveway for ages. I haven't gotten a...
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    Seafoam Use

    Re: Seafoam Use My motor is a perfect case study in why you need to run decarbing solutions regularly- before cleaning by hand: after cleaning by hand: And you can bet your *** I don't want to have to do that again :D
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    Penetrating oil - whats best? Really.

    Re: Penetrating oil - whats best? Really.
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    Preventative maintenance prior to my fishing trip?

    Re: Preventative maintenance prior to my fishing trip? I took the liberty of planning your fishing destination for you. Also sandpaper to clean fouled spark plugs, and a spark tester so you know whether you need the coil. Then put all of this stuff in a waterproof-ish zip up bag with a...
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    Does this look like a slipping prop?

    1990 140hp johnson / 16' cape horn deep v Do these pics look like this prop is slipping? The pictures are of a loaner from a local shop after running it saturday and sunday. My current prop is 15x17 and in rough water or when heavily loaded I'm maxing out at 5k but with a light load in flat...
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    what is this style of boat called?

    edit: nevermind i found my answer.
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    Idle timing screw? Johnson 140

    Re: Idle timing screw? Johnson 140
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    Idle timing screw? Johnson 140

    Re: Idle timing screw? Johnson 140 Here's the other side of the flywheel: If I am interpreting the service manual picture in post 1 there should a bracket holding a bolt with a spring pushing a lever attached to the timer base and it should be on the port side, opposite the spark advance...
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    Idle timing screw? Johnson 140

    Re: Idle timing screw? Johnson 140 Behind the starter is what I thought the picture looked like, but here are images all around the starter: The image in my previous post is from page 1-45 of the manual Am I just being blind here? This should be on the port side attached to the timer base...
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    Idle timing screw? Johnson 140

    1990 Johnson 140 V4 The OMC manual says to adjust the idle timing with the idle timing screw. I don't see D on my motor.
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    neutral safety switch operation

    1990 johnson 140 When the neutral safety switch is engaged does it stop the motor from running (kill a running motor) or does it just ground out the keyswitch from sending voltage to the starter solenoid?
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    thermostats for johnson 140hp 1991

    Re: thermostats for johnson 140hp 1991 I have the thermostats screwed all of the way down on the diaphragms on my 1990 J140. Did you notice the pinholes in the corners of the diaphragms which match up to the covers? I assume they're there to equalize pressure. Could that have anything to do...
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    Head bolts

    Re: Head bolts http://imageshack.us/photo/my-images/136/35head.jpg/sr=1 This isn't your head, but the principle is the same. You start inside and work your way out and around in a widening circle. My 1990 V4 is 18-20 ft. lb. Then you check and re-torque after after about 10 hours of use.
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    Motor jumps around wildly, misfiring

    1990 Johnson 140 http://www.youtube.com/watch?v=CYJ3RzD0-yQ I'm aware of what's written on the cowling :) It runs smoothly up to about 2300, then starts to miss badly until it hits a brick wall at 2800. Occasionally it will act like its going to take off, smoothing out and pulling for a...
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