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  1. R

    Rebuild of a 3.7 180hp mercruiser have questions

    Is this the 4 cylinder based on the 460 cube Ford big block.------There are many who would say find something better to put into the boat.
  2. R

    ‘55 QD-16 10HP Johnson - Fuel Issue

    24:1 was the ratio when new in 55.----Last year of those green ones.-----Check for loose wristpin bushings.---Also a common issue with them.------Today there have been many lively discussions about the mixture you can run with modern oils.-----No need to go into that again.
  3. R

    Mercury 500 thunderbolt 70s black and red won’t pee water

    Are you test running in a bucket ?----On a hose ?----On a boat floating in the lake ?
  4. R

    ‘55 QD-16 10HP Johnson - Fuel Issue

    You dial in the lower one ( high speed ) first for best operation.----Then slow motor to idle and adjust the upper one ( idle mixture ) for best idle and smooth acceleration.
  5. R

    60hp Johnson dropping cylinder

    A defective crank seal would leak all the time I think.-----Ask to see the bad seal, part #331103.
  6. R

    1990 Evinrude 200XP electrical issues

    Load test the battery.
  7. R

    I/O 18 ft. Does it sit too low in the stern?

    Looks a little low to me.----Any foam under the floor that might be waterlogged ?
  8. R

    ‘55 QD-16 10HP Johnson - Fuel Issue

    When you operate the button on the tank it fill the carburetor with fuel.-----When motor starts it quickly pumps air into the tank.-----That pressure keeps fuel flowing.-----Does spark jump a gap of at least 1/4" on a test device ??.-----Have you looked at the coils through the inspection port...
  9. R

    OMC Cobra 800 RETAINER PLATE issue

    You should not have to grind or modify the retainer plate 321174.-----The retainer plate goes in BEFORE the 2 snap rings go in.
  10. R

    Merc Outboard - 2 Year Old Engine Failure, 5 Year Extended Warranty Denied

    I take one look at these new 4 strokes and chuckle.----Who is going to rebuild this mess of parts supplied to the factory by the lowest bidder.
  11. R

    1974 mercury 2 stroke water pump operation?

    Poster appears to be confused by the terms-----Impeller ----and----Propeller.-----One pumps water into the motor.
  12. R

    1992 Johnson 200hp no spark

    In my opinion the starter is easy to check.------Perhaps that was a " modern mechanic " who is on a bonus program say 2% of parts sold.---Not sure how to test these components either.----No sensitivity to customers wallet at all.
  13. R

    Want idle

    Tried adjusting item #71 ?-----Or not going to bother ?
  14. R

    90 HP main bearing oil supply

    It is a big $$ check valve.----It is part of oil recirculation system..----Just replaced one on a 1993 V-4 rebuild this spring.
  15. R

    Want idle

    It is running too lean on low speed mixture or throttle plate is opening too early.----Try moving the stop ( item 71 ) on that thin rod at the back of it.
  16. R

    OMC Cobra 800 RETAINER PLATE issue

    The retainer plate goes in BEFORE the 2 rings 321171 are installed.----I know this and the parts book shows it for regular rotation.
  17. R

    Merc Outboard - 2 Year Old Engine Failure, 5 Year Extended Warranty Denied

    Round of applause for the above post.-------Friends have an inline 6 model 115 HP .----A sweet running motor.------Yes they use more fuel , a bit noisier.-----Cheaper to own and maintain.
  18. R

    Problem starting johnson 50hp 1996

    Flywheel and crank tapers need to be clean and dry.----Must match properly.------Torque the nut.----Post # 2 was not far off I guess.
  19. R

    Bombardier model and year unknown

    I have a 1997 SUZUKI 15 HP as well -----Not even a close resemblance to the OMC units.
  20. R

    Bombardier model and year unknown

    They were NOT SUZUKI built.---One source stated that maybe they were Briggs & Stratton designed .---Lower units and carburetors were definitely OMC designs on these late 1990's OMC 4 strokes. !------Yes , Johnson marketed Suzuki built 4 strokes from say 2002 till end ( 2007 ) of Johnson marketing
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