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  1. R

    Gears noise on Sterndrive

    https://www.youtube.com/results?search_query=Mercruiser+3.0+Shift+Cable+Adjustment
  2. R

    Gears noise on Sterndrive

    the lube is on the cutoff switch module .. then the switch.. is moved it rev/fwd .. also the cable to the out drive can be a wear issue ..
  3. R

    Trim issue

    use the ohm meter on the sensors out drive
  4. R

    Trim issue

    use the voltmeter .
  5. R

    Trim issue

    the out drive switch or the wires corroded to the up switch, then the up button on the dash was using the dash up switch ..2 solenoids up and is down ...the dash switch uses a voltmeter ...to troubleshoot it ..
  6. R

    3.0 timing

    I have my dwell meter .....bought it in 1967 my 442 olds ... the older engines mercrusier changed the timing updated gasoline is a alcohol 10% ...LOOK IT UP ..... my merc MCM470 1978 the timing 8 deg at RPM 800 ,,, then changed it 4deg ....changed the gasoline ..merc changed my motor timing...
  7. R

    Trim

    YOU CAN ROTATE IS A VERY SMALL ROTATION ...clean the sender on the finger to the wire coil ...
  8. R

    Trim

    take out the trim sensor .. inspect it .. probably a contact is corrosion clean it .. then adjust the sensor down then up , out drive up/down ... some had the hinge pin that was worn pin ..tool was worn/over torqued .. then the pin is a larger diameter .. then the sensor wire are corroded in...
  9. R

    Running boat on land with no prop?

    the muff is correct ... the water tank is a bit lower, the impeller ...then the impeller is wearing out ...hot ..
  10. R

    Waterproof Thread locker

    the hinge pin helicoil thread is a red loctite ....then put the blue medium loctite hinge pin ... I take out the hinge pins ...I use a high flame heat and the flame is small turbo torch ...
  11. R

    Trim

    the out drive trim cylinders are down the trim switch is using the voltage to the motor....then the up switch is to the relay and then the relay goes to the motor changes the reverse positive negative . the high current is up on the motor ,,, up on the out drive ...
  12. R

    Trim

    so the out drive is down then the out drive is not up ? the wiring is a dc motor and the motor switch is up then change the motor change to reverse voltage ... CCW/CW ..on the motor power .
  13. R

    Stupid mistake: Can it be fixed?

    yes take the boat drain plug out on the trailer ...use a tarp over the boat . inspect the electrical components ... dry the fan with a motor .... when I take my boat out of the water I take out the boat drain plug...take the battery terminal off ....
  14. R

    Waterproof Thread locker

    permatex medium thread locker that put on the helicoil threads a small amount .... when the bolt is old did not take that bolt off very high torque .. then I use a small torch flame heat it up then use a socket or a wrench in the ice water bottle .. then the bolt will shrink and remove that old...
  15. R

    Drive oil

    80-90 is lower 75HP .... 90 is higher HP ... my alpha 1 is 90 .........170 HP...blue is the 90 color ...
  16. R

    Waterproof Thread locker

    Permatex’s Thread Sealant ...I did the bolt threads on the engines no leaks or no corrosion the threads ..
  17. R

    End of Season Maintenance

    look up the gear oil and change it if is an off color .... also the water is in it and it is a milky color..inspect the air pressure 7-10 PSI..see if its a leak .... you inspect it in the fall great !
  18. R

    Mercruiser pre alpha trim pump.

    the trim pump inspects the commutator and the brushes ....the brush holder is pitted and the brushes are binding ...merc is a steel brush holder ... dc motors are a bronze/brass brush holder is very good no corrosion .. I am a electrical electronic tech ... I repair motors ... DC motor trains
  19. R

    End of Season Maintenance

    rodents and insects keep it out of my boat ,,, my woodland area ..................
  20. R

    End of Season Maintenance

    I inspected in october boat .. take out the out drive see if its water and the bellows . lube it .. then out drive is inspected the oil is clean , then flush out the water in the engine ...use a air compressor .. .then use anti freeze in the engine ...then I did marvel mystery oil 1 OZ in the...
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