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  1. Bt Doctur

    MC-1 Gimbal bearing snap ring.

    I installed the new bearing without those shims it fits fine. Did you use an installer when hammering in the new type bearing?
  2. Bt Doctur

    Mercruiser 5.0 no power to fuel pump when ignition ON

    What are the first 3 lette rs of the word "ASSume" The main battery cable is direct to the starter, no fuse there. The 90a white plastic fuse was supposed to only protect the alt but they added the main system to it. When it blows you lose the alt and main system feed. I remove the red system...
  3. Bt Doctur

    shifter adjustment

    most likely incorrect shift cable adjustment
  4. Bt Doctur

    Installed shift cable, should prop spin free in reverse?

    Everything seemed to go together by the directions and when I put the shift lever in forward gear, the prop locks in the ccw direction That is correct for fwd gear. the reverse may just need adjusting
  5. Bt Doctur

    Reverse Rotation Distributor gears

    with the gear driven cam ,to need a standard dist for clockwise dist rotation, firing order is clockwise from number 1 . I find it a lot easier to remember to use 1,8,4,3,6,5,7,2 in a CCW rotation on the cap instead of 1,2,7,5,6,3,4,8 clockwise.
  6. Bt Doctur

    Reverse Rotation Distributor gears

    all depends on the engines cam being chain driven or gear driven. Even reverse engines use the same std rotation dist because of the oil pump.Will not pump oil if its reversed
  7. Bt Doctur

    Installing Bravo3 Sterndrive

    control box in neutral?
  8. Bt Doctur

    engine shutdown

    sounds like you only needed a new shift cable originally
  9. Bt Doctur

    What is this reservoir for? Coolant? Where does the line run to?

    and if empty you have a leak that needs fixing
  10. Bt Doctur

    Harmonic Balancer pulley of Mercruiser 3.0 replacement

    running the serial numbers you list there both bolt on pullys
  11. Bt Doctur

    Can't trim up ?

    If you can trailer up the pump and solenoids are working ,whats not working is the trim limit switch on the transom. Locate the black lamp cord type wire ,unplug from the pump and jumper the pump side with 2 male connectors
  12. Bt Doctur

    Alpha I SN6749102 Outdrive Lower Unit. Can't lock prop in FWD to re-attach to Upper

    If you rotate the prop ccw in fwd then the drive shaft should be turning ccw also. If this is not the case the lower unit is somehow been damaged/broken
  13. Bt Doctur

    Alpha I SN6749102 Outdrive Lower Unit. Can't lock prop in FWD to re-attach to Upper

    I used vice grips to turn the drive shaft and break it free, and now it turns easily clockwise and CCW. Should not turn easily because of the impeller and you should only turn it in a clockwise direction When shifted in FWD or reverse, and prop turns as it should. However, when I shift it to...
  14. Bt Doctur

    Impeller replacement after engine overheating - 3.0L Mercruiser

    impeller is toast along with the top cover, One item looks like part of a exaust shutter
  15. Bt Doctur

    1988 Alpha one Gen one lower unit

    moisture in the gear oil is not good, if the unit was drained and left empty the bearings could have rusted. Remove the pump top cover and the shaft must turn by hand. If not something got seized
  16. Bt Doctur

    Engine water flow issue

    Impeller - brand new (key is in it, lol) it spins freely with the shaft Once installed in the housing its very hard to just turn by hand. Most cases are from clogged exaust risers
  17. Bt Doctur

    1988 Alpha one Gen one lower unit

    oil based products will destroy rubber. If you removed the impeller and it still wont turn the lower unit is damaged
  18. Bt Doctur

    89. Mercruiser engine swap problems

    #1 cylinder on compression stroke, rotate engine until timing mark on balancer is at at 6 degrees, install dist pointing to #1 in the cap or if cap is not marked point to #1cylinder , time accordingly. recheck compression readings, check for correct firing order It works better if you tell us...
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