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  1. M

    Pontoon navigation lights wiring.

    I’ve searched and searched. Honestly. But I cant find a simple diagram showing the wiring for navigation lights that include separate port and starboard lights, stern light, switch, fuse panel and battery. I know the wiring of the switch itself will be some what dependent on the type of switch...
  2. M

    Still, still stuck with no spark

    Hi all. I posted a thread about this last year and still struggling with it, so reaching out again for help. I’ve done additional test steps, but to summarize: On my second trip out on my new to me 1996 Mariner (see signature for detail) my engine just quit. No sputter, coughs or bangs...
  3. M

    Diagnosing trim gauge issues

    My trim gauge stopped working late last year. The weather has finally turned better and it time to fix it. I’ve tested the gauge using directions found here in the forums and it appears ok. Trim up/down and trailer up/down have no impact on the gauge. With the key off or on the needle remains...
  4. M

    Still stuck with with no spark

    Slowly making my way through the elimination process but still no spark. - Checked all plugs (using an inline spark tester). - Stator ohm’s tests ok (however, a new stator was installed at the direction of the mechanic (and that's another story!!!)). - Switch Box (new box installed). - Trigger...
  5. M

    How to install flywheel

    My struggles never seem to end. At this rate I’m not going to get the family out until winter! Short story, I had a bit of a falling out with my mechanic so I paid him for the work he had done and retrieved my un-assembled motor. He had removed the flywheel by unbolting it from the flywheel...
  6. M

    Mariner black stator replacement

    I’m in the process of replacing the stator for my 1996 40 hp mariner magnum. It is a black stator with part number 398-9710A33. I’ve ordered and received the replacement from CDI, part number 174-9710K 1 The documentation that came with the replacement confirmed that it replaces the original...
  7. M

    Mercruiser 4.3 - no fuel but fuel pump runs after attempted start

    Well, it’s been a challenging summer!!! Getting my Maxum (with a 2000 4.3L Mercuiser with Thunderbolt V Ignition) ready to sell while I wait for parts for my pontoon....now it won’t start. Turns over ok but no start. Put a bit of gas in the carb and fires right up (but doesn’t continue to...
  8. M

    Another ‘No Spark’ questione

    So I’m continuing my search for the no spark issue on my 1996 40 hp 4 cylinder mariner magnum electric start. I say “continuing” because I did the tests with an unpredictable meter the first time. Anyhow, this is the summary: No spark on any cylinder Stator ohm’s tests ok Trigger ohm’s tests ok...
  9. M

    Sporadic rough running in neutral and idle

    Asking for my brother on this one. It’s a 2009 60 hp mercury EFI. As the subject line says, it runs rough (not so much as a cough/sputtering, but more of shake/knock…like not running smoothly). It does this sporadically, hot or cold. More often when it first starts it has this symptom and then...
  10. M

    RPM at cranking speed

    Hi All My 1996 40 hp Mariner Magnum has no spark. I’ve now got the shop manual and going through the diagnostic tests. I’ve tested each of the components and they all appear to be in spec. By process of elimination, this suggests the Switch Box is the issue (as the switch box itself can not be...
  11. M

    1996 Mariner 40 HP - starting procedure and more

    Hi All, I recently bought a used 1996 (I think) 40 HP ELPTO (I think) Mercury Mariner. The serial number is hard to make out, but I believe it is OG403xxx. I know this has likely been asked a hundred times, but I'm not able to find it. Where can I download a users manual (not the repair...
  12. M

    Can not find Mercruiser steering cable replacement

    I’m trying to find a replacement rack/pinion cable (ssc13415) for my Mercruiser (ya, still working on this) and can’t find one anywhere. At first I searched locally (help out local businesses) and no luck. Expanded to amazon, canada, USA, eBay and shops through out North America. No luck. I...
  13. M

    Swivel Shaft replacement approach

    I started this new thread specifically for the swivel shaft replacement as followup to my thread about the steering cable nut being stuck. I've removed the steering cable clevis pin but the sterndrive still does not swing left/right. Based on the suggestion from the earlier thread from...
  14. M

    Steering cable nut - how to remove

    Well, I thought removing the cotter pin from the clevis pin on the steering cable was the tough part (isn’t that conveniently located!!!), but now I’m trying to remove the cable nut on the other end. Unfortunately when trying to unscrew it, the cylinder it is attached to also turns, preventing...
  15. M

    Thank you, Thank you, THANK YOU

    Boy, what a repair trip this has been! I just want to say thank you to those who have provided constant help to me. I am super appreciative. Things I have done since a near sinking of the boat. Not much of this could have been done without the help of the contributors of iBOATS. Exhaust bellow...
  16. M

    Electronic Float switch test

    I think other than the trim setting, my last hurdle before attempting to go out tomorrow is the bulge pump. I'm trying to test an electronic float switch. Is this as simple as testing testing any other switch? Check for continuity when the float is up verse down?
  17. M

    Trim setting procedure

    I found a post from a while back (think it was from chrisa) on the procedures for setting the trim on an Alpha one Gen 2. It had these two pages. I'm stuck on the first step :facepalm: . It says "rotate the sender until the needle is at the bottom of the arc". Does that mean using the control on...
  18. M

    Starter fuse replacement - is this the correct one?

    Can someone confirm if this is the right fuse for a Mercruiser 4.3 starter? 88-79023A91
  19. M

    Adhesive and the bellows

    Sorry to bring this up again. I've read a bunch of posts about adhesive and want to summarize my understanding. (as I noted in another post, I'm nervous for the next few steps. I can't imagine taking this apart again if I've done something wrong!) U-joint and exhaust bellows: 1. Use acetone to...
  20. M

    Alpha One Gen 2 alignment

    I've installed the new gimbal bearing and now doing the alignment check. I've watched a few videos and know that I should be able to slide the alignment tool out easily with two fingers. (as you can see from the video, I'm not there). Before I go messing around with the engine, I wanted to make...
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