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  1. K

    Mercruiser 4.3 adjustments

    Pump is sending fuel as it should. I was thinking vapor lock when the motor quit.
  2. K

    Mercruiser 4.3 adjustments

    So I was able to take the boat out last night 1987 mercruiser alpha 1 gen 1. Started up fine. Let her sit for a couple min then put it in reverse from the dock. The barely went into gear when the motor went full throttle. So get it out on the water and try to get it through its paces. When...
  3. K

    Trouble with alpha 1 gen 1(1987) shifting adjustment

    O It appears I've figured out the water issue. The issue that I'm finding myself in now I cant get it to go in reverse on the remote control. It will engage forward but will not engage for reverse. Not sure where to go.
  4. K

    Trouble with alpha 1 gen 1(1987) shifting adjustment

    So recently I took apart the outdrive to do seal job on upper unit and to inspect the lower unit water pump. Had replaced the motor as well. So went to readjust the shifting linkage I'm following the instructions and it says to push in on shift linkage and turn the prop counter clockwise...
  5. K

    Riser gasket help!!

    Looking to order new riser gaskets for my 1987 mercruiser 4.3 V6. With no expansion piece on the riser. The question is what is the difference between the restricted flow gasket and the full flow gasket? Does it matter which one I use? I would assume the full flow one is better as it allows more...
  6. K

    1987 Starcraft 191 select trim switch

    While searching through google today I found the control that appears to be mine. It's a MARPAC side mount. So next issue I cannot find any catalogs and it appear the company rebranded switched to yogisleep. So now do I cob a switch in there or is there a spot for aftermarket MARPAC parts?
  7. K

    4.3 thermostat

    Just ordered a set last night. Also with this I noticed there are 2 different wet joint gaskets one with 2 long openings and 2 pin hole type openings and one with 4 long openings. Is there a difference as far as what they do? I'd assume 1 would allow more water to go through than the other. Is...
  8. K

    1987 Starcraft 191 select trim switch

    Yes. I've been slowly looking and posting. With this thing it wouldnt surprise me if it wasnt a merc originally lmao. Be nice to find a manual for a 1987 Starcraft 191s so I could actually see what it is.
  9. K

    4.3 thermostat

    Well last year the motor that was in the boat was a running blow up. Head gasket shot and block had micro crack. The risers were too hot to keep my hand on. Fast forward to yesterday put the new(to me) motor in with same exhaust manifolds and risers and let the motor run to about 140, the risers...
  10. K

    1987 Starcraft 191 select trim switch

    The only issuse I see with this switch is that the wires are coming out the side. The switch I took off the wires come out the back. The switch itself fit into a rubber cover and sat horizontally in the throttle handle. Below is a pic of the actual switch (it lost a leg upon removal it's a 3 leg...
  11. K

    4.3 thermostat

    It has probably been best into the ground but can you run a motor without the thermostat installed? Advantages? Disadvantages?
  12. K

    1987 Starcraft 191 select trim switch

    Looks like part of your post is missing?
  13. K

    1987 Starcraft 191 select trim switch

    Here is the photo of my throttle control. I believe it is the stock one that came with the boat. Had to reassemble a little for the pic.
  14. K

    1987 Starcraft 191 select trim switch

  15. K

    1987 Starcraft 191 select trim switch

    No idea. It's the stock one that came with the boat. The sticker badge was missing when I got it.
  16. K

    1987 Starcraft 191 select trim switch

    Need help locating an OEM switch or a aftermarket switch thatll fir for my starcraft with the 4.3 alpha 1 gen 1. The switch lays horizontal in the throttle selector arm. Thanks for the help in advance.
  17. K

    1987 Starcraft 191 select trim switch

    Need help locating a new replacement trim switch for my Starcraft. The motor is a 4.3 alpha 1 gen 1. The trim lever is in the throttle handle. Everytime I type anything in to a search bar it always comes out with stuff for outdrive or side mounts.
  18. K

    1987 mercruiser 4.3 water in motor help!!!

    Hello everyone, Been looking for help on here since I started working on my boat. Have been able to peice through different threads but now I'm stuck and decided to open up my own thread for help. I have a 1987 starcraft 19ft I/O with a Mercruiser 4.3 the motor originally had an overheating...
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