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  1. Don S

    Alpha One Impeller?????????

    Re: Alpha One Impeller????????? If you don't need either housing, you need the impeller repair kit OEM PN 47- 89984Q 5 It includes the gaskets. Same kit used from 1970 to 1990 MC-1 to Alpha I. Next to the last page of the document below shows pictures of the kits. Here is a link to some ID...
  2. Don S

    Volvo penta 5.7GL A-PMDA weak spark & won't start

    Re: Volvo penta 5.7GL A-PMDA weak spark & won't start Here is some further troubleshooting information on your ignition system.
  3. Don S

    2002 Mercruiser 4.3 no power to fuel pump

    Re: 2002 Mercruiser 4.3 no power to fuel pump Sounds like you have either a faulty oil pressure switch or corroded wires going to it.
  4. Don S

    No Spark resulting in Tow of Shame 7.4L Thunderbolt 5 ignition

    Re: No Spark resulting in Tow of Shame 7.4L Thunderbolt 5 ignition Here is the diagnostic chart. Should help you find where the problem is.
  5. Don S

    Schematic for Fuel Pump Circuit - 2005 Volvo Penta 4.3GL-D

    Re: Schematic for Fuel Pump Circuit - 2005 Volvo Penta 4.3GL-D The purple wire is 12V from the ignition switch when the key is in the run position. Here is the wiring diagrams.
  6. Don S

    Cranks but will not start

    Re: Cranks but will not start Lots of water corrosion in your pictures of the pump. I would guess the carb is the same condition.. No wonder it won't start. New pump, rebuild carb, get the water out of the tank, and install water separating fuel filter. Then you will get it running. What...
  7. Don S

    Alpha g2 zinc on bearing carrier,mercathode?

    Re: Alpha g2 zinc on bearing carrier,mercathode? You shouldn't be using Zinc anodes in salt water you should be using aluminum anodes. The "Mercruser" OEM lot #888756A1 includes that anode in it.
  8. Don S

    Electric fuel pump info in merc manual

    Re: Electric fuel pump info in merc manual What makes you think it's vapor lock? Here is the service bulletin, have you done any of the testing in it? I think one problem people have with the OEM manuals are that they are designed for Merc techs that have gone through training, not the...
  9. Don S

    Questions on installing new Mercury outboard

    Re: Questions on installing new Mercury outboard In the wiring diagram, it plugs into the tachometer harness (item 12). Then you can just cut the harness to fit, and use the wires you need. I did this drawing for another guy, changed some wire names and it works for yours.
  10. Don S

    trim gauge inop

    Re: trim gauge inop The starboard side is the gauge sender, (says right on it what it is) the port side is the trim limit (also says on it) Service manual #11 covers the drive. Here is the instructions on installing the switch and sender.
  11. Don S

    help plz Overheat problem

    Re: help plz Re: help plz As noted, the impeller is the FIRST thing you check in any marine overheat. I would suggest you remove the drive from the boat, to check. Since the boat is new to you, you might as well check in there as well. The .pdf files below is just small sections from the OEM...
  12. Don S

    Burned points

    Re: Burned points Some probably replaced a burned up resistor wire with regular wire.
  13. Don S

    Questions on installing new Mercury outboard

    Re: Questions on installing new Mercury outboard Yes, that harness you linked to would go from the motor to the Smartcraft gauges (Not the same as your analog gauges). Here is the wiring diagram that shows how it goes together with your control. If you want to use your present gauges you...
  14. Don S

    SX-M Outdrive Pee Hole

    Re: SX-M Outdrive Pee Hole 2.2 quarts low means it was almost empty, and flakes on the drain plug is NEVER good. A black mush on the end of the magnet is ok, flakes are not. I think you have some serious problems. Is this the hole you was referring to? It's a drain hole so water doesn't fill...
  15. Don S

    Mercruiser 3.0 - Front Mount Adjustment

    Re: Mercruiser 3.0 - Front Mount Adjustment No, there is one other thing it means. You are only in the grease tube part of the coupler, not the splines. If you look inside the boat at the coupler, you will see a tube sticking out of the coupler with the grease zirk in it. That part is not...
  16. Don S

    Trying to install Delco EST Ignition - not going so well

    Re: Trying to install Delco EST Ignition - not going so well Here is the procedure for setting the timing on the EST. Did you start and stop the engine at the right times? 1. Start engine. 2. Install both jumpers shown in blue in picture below. 3. Set timing 4. STOP engine. 5. Remove jumper...
  17. Don S

    Making extra beefy tools, and my outdrive still wins... for now...

    Re: Making extra beefy tools, and my outdrive still wins... for now... Uhhhhhh, How are you going to get your special tool over the ujoints?
  18. Don S

    Leaky Tilt/Trim Reservoir on '87 Alpha One Mercruiser

    Re: Leaky Tilt/Trim Reservoir on '87 Alpha One Mercruiser Which pump do you have, A,B or C?
  19. Don S

    98 5.0L bravo gen + serp belt replacement

    Re: 98 5.0L bravo gen + serp belt replacement Have a look at this service bulletin. Yes, you need the proper PS pullers and installer to mess with the pulleys or you will damage the pulley, the pump, or most likely both.
  20. Don S

    Serial number location on a remanufactured engine?

    Re: Serial number location on a remanufactured engine? No, not the decal, the metal tag rivited to the the back of the block just above the starter. (Think digital camera)
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