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    Volvo SX-M Trim Tilt Control Unit Problem

    Thanks to Bt Doctur for your suggestions. We finally got back to working on the boat and I'm happy to report that we have got the trim system working again by eliminating the "trim limit control unit" (Black box). We accomplished this by doing the following: 1. Disconnected all 4 multi-wire...
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    Volvo SX-M Trim Tilt Control Unit Problem

    So we finally got back to the boat to work on the trim system again. Since my last post I bought a Clymer manual that was very helpful in explaining how the trim limit control unit (black box) works, how to reprogram it, plus it included a wiring. Armed with this information I felt confident...
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    Volvo SX-M Trim Tilt Control Unit Problem

    Thanks again for your comments. Haven't had time to get back to boat to try anything, but will make another post when have more to report.
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    Volvo SX-M Trim Tilt Control Unit Problem

    Thanks for your reply QBhoy! No additional switch on transom or platform, but there is an additional white rocker switch on the throttle lever. I believe this is for full tilt mode. When pushing this white switch a light comes on the black box but nothing else. I'm thinking the wire continuity...
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    Volvo SX-M Trim Tilt Control Unit Problem

    I have a trim limit control unit (black Box) #3851584 / 3855584 on a volvo penta outdrive type SX-MHP that appears to be faulty. Does anyone have information/instructions on how this system is supposed to work, have a wiring diagram, or know how it can be tested? I have tried many things as...
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    Water in cylinders, 9.9 HP

    I just bought a "94" Evinrude 9.9 (model # E10RER) and may have gotten taken. It starts easy, idles good, and runs well at high speeds. But it runs rough at mid range. Thinking that it might be bad plugs, I pulled them and found water on the plugs and a small puddle of water (a cc or so) in the...
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