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  1. Horigan

    Lower unit

    I think you need 1.66. The other is a ~20% different ratio. That's a lot to try to compensate with a prop change.
  2. Horigan

    Dip stick length on SX-M stern drive

    If it's an SX-M, then there should be a vent/overflow plug next to the shift mechanism under the cover.
  3. Horigan

    Lower unit

    Any Volvo SX-M or OMC Cobra SX lower unit with that ratio will work. I believe a '95 or '96 DP-SM duo prop would also work if you can find it, but I don't know what ratio you would need to change to for a duo prop. Someone here would know that.
  4. Horigan

    Frozen manual tilt

    Would a car scissor jack fit, with a block of wood on the transom?
  5. Horigan

    What are the essential tools to keep on board?

    I think it depends on the size of the boat... ;)
  6. Horigan

    Fuse or circuit protector

    He's saying that fuses don't protect for positive shorts to ground if that short happens between the battery and the fuse. That's the benefit of placing a fuse close to the battery, reduced exposure to positive shorts to ground. This can also be handled with good wire management/placement, as...
  7. Horigan

    Battery Straps?

    Attwood makes a version without straps that has been working for me for years. https://www.zoro.com/static/cms/product/prev/CWR%20Electronics%20Corp_59934XL.jpg
  8. Horigan

    Workshop manual for OMC Cobra SX 4.3GL "HU" needed

    eBay is also a good source for old manuals.
  9. Horigan

    Shimming Bearing Cover DP-SM / SX-M

    Or repair with a Heli-Coil.
  10. Horigan

    Need to identify my shifter

    Here's a link to drill down to the part. Go to SD Accessories in the Product pull down menu. Then drill down to Remote Control Assy - Concealed. http://epc.brp.com/Index.aspx?lang=E&s1=aac13b02-dcdc-4ca9-bf95-c5a5da5111fa
  11. Horigan

    OMC Manuals

    or eBay. Note that operation and maintenance manuals are different. Found several 1994 OMC shop manuals on eBay, like this one. 1994 OMC Shop Manual
  12. Horigan

    When to change bellows on a SX-A drive?

    You remove the pivot housing from the the gimbal ring/assembly. If it's like an SX-M, you'll need a large allen hex socket to remove the pivot housing. It makes the bellows replacement much easier and ensures you get them installed and sealed correctly. Grease is all you need for both...
  13. Horigan

    Hydrolock, swim platform, riser height and static water line question

    ... or take it to a machine shop to clean up the surface. Could be less hassle than returning it. Maybe the supplier will pay for the machining.
  14. Horigan

    Cobra SX lower unit drain plug will not open

    I had the same issue on my Cobra SX. I used an impact gun and 1/2” drive flat head screw driver socket to loosen it. Make sure the driver socket is new (sharp edges) and it’s full flush in the screw when you use the impact gun. I bought a larger than needed driver and filed/ground it down to fit...
  15. Horigan

    1998 VP 5.0Gi looses power, maybe in protection mode

    There should a limp (SLOW) mode that receives signals from a dedicated oil pressure switch and a water temperature switch that kicks in at 2500 rpm. The gauges for these run off separate sensors. I believe the switches go to ground when activated.
  16. Horigan

    Neutra Salt System Solenoid and pully question VP 5.7 Gi-f

    @MalibuMike, To test the solenoid, first make sure you're getting 12V to it when the switch is depressed with multimeter to the two wires. Then confirm the inlet hose is not plugged by removing it from the solenoid and confirming solution flow. Then do as you suggest by removing the outlet...
  17. Horigan

    Help with DPS-B 1.95 outdrive

    Maybe try shifting while under pressure or vacuum. That way you exercise the shift seal.
  18. Horigan

    Temp gauge vs. laser thermometer at thermostat housing

    I did this per Bt's suggestion on my boat and it worked pretty good. If you can find a smaller pot than 5K it will be easier to find the correct resistance value. The 5K pot is very sensitive around the 55 ohms I ended up with. Just removing it to measure it can change the value a bit.
  19. Horigan

    DP-SM Raw water hose fitting stuck

    I've run into the same issue with the fitting being difficult to remove due to housing corrosion. I just swung the rubber mallet harder to get it out. This is with pivot housing removed. I then cleaned up the corrosion and applied liberal grease when I installed the new one. I did this for...
  20. Horigan

    Volvo Penta 5.7Gi Closed Cooling Question

    In addition to what Scott said, get an IR gun to confirm the temperature at the thermostat housing matches the gauge and to ensure the risers aren't too warm. I would plan on cleaning the heat exchanger to ensure it's operating at max efficiency. That could explain the 180 deg temp. Also...
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