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  1. R

    No air filters?

    It has been that way for about 100 years.----Only some of the newer 4 strokes are using air filters I believe.
  2. R

    Engine only running on 2 Cylinders.

    You need 4 things for the motor to run.----Fuel-- , Compression, ---Crankcase compression----Spark at the right time.-----So inspect the bottom carburetor.---Check reed valves for #3 cylinder.----Look for holes in crankcase of #3 cylinder.----You only have 2 of the 4 at the moment for #3...
  3. R

    Motor revs up but doesn’t go anywhere?

    Not the same set up as what you might find on a 25 HP -----Try another prop.----Post the results.
  4. R

    1993 9.9 hp/15 hp power head to 1991 15 hp bad powerhead outboard.

    I think the 91 ignition / flywheel will fit on the 93 model.----Intake from 91 will fit on the 93 block.----Look carefully in the parts book
  5. R

    1993 9.9 hp/15 hp power head to 1991 15 hp bad powerhead outboard.

    This needs some careful study of the parts book.----The issue might be the shift linkage mounting.--And throttle control / cable mounting.-----Much of the actual blocks is the same with bigger bore / pistons in the 93 model
  6. R

    1990 Force 120HP #2 Cyl zero compression and upon opening piston shows damage

    Be a shame to fix one motor and have the other one go phoofff a month later.-----Was involved in commissioning a 28' antique runabout.--Owner had just bought it.-----One of the Chrysler flathead 6 engines was bad.----We suggested why not do the other motor too.-----He did not argue , said --"...
  7. R

    1990 Force 120HP #2 Cyl zero compression and upon opening piston shows damage

    A wise man would also look at the cylinders on the other motor.-----Order an extra head gasket is all it would take.----Don't forget new impellers and seal kits for the gearcases too !!
  8. R

    LOOKING FOR HELP WITH A OMC STRINGER STERN DRIVE

    The reverse coil has 4 threaded holes to hold the propshaft bearing carrier.----Do you have this apart now ??----Not much can go wrong with the electromagnet.----What trouble shooting have you done if any ???----Your location ?
  9. R

    LOOKING FOR HELP WITH A OMC STRINGER STERN DRIVE

    Your location?------If in Canada ---evinrudeparts.ca ------or----kings propeller repair.----Both in beautiful / clean Ontario
  10. R

    1984 Evinrude 25hp prop size

    A 9X9 ----3 blade -----13 tooth spline----For NON through hub exhaust.----0763585----First # is for 9" diameter second # is for 9" pitch.----And on a 20' boat you might need a 7 or 8" pitch.
  11. R

    1984 Evinrude 25hp prop size

    Not sure why this is so confusing to the OP ??-----The prop in picture #4 simply will not fit on an 84 model !----And you have an 84 model.----Your location ?
  12. R

    1984 Evinrude 25hp prop size

    And a prop attaches to a motor but----FITS ----the boat.-----What size boat do you have.
  13. R

    1984 Evinrude 25hp prop size

    The prop in the 4th picture is a " through the hub " and totally wrong for your motor.-----Where are you looking for a prop ??----This should not be difficult in my opinion.
  14. R

    1990 Force 120HP #2 Cyl zero compression and upon opening piston shows damage

    Lack of maintenance.----Many folks do not realize that most outboards require a new impeller about every 5 years.------Quality of the oil.-----Wrong pitch prop for the size of boat and load.-----Sorry , most folks think that if a motor starts , barks and roars that nothing can be wrong.
  15. R

    Evinrude 25 - Part Missing

    That is a 1960 or 61 model.----Not much if anything will fit on a 1977 model 25 HP, some nuts & bolts maybe.
  16. R

    1400 RPM loss from 13 to 15 pitch!!!

    That high revving tiny prop and pointy lower unit were not efficient.-----But it allowed motor to rev up quicker until prop started to bite as speed increased.
  17. R

    1400 RPM loss from 13 to 15 pitch!!!

    Test done by me 40 years ago.----A 16' ski boat.----1970 115HP Evinrude.-----All on same day.----Just me in the boat.------No power trim tilt.-----Thrust pin in same hole.---A 19" pitch SST prop.----Great acceleration top speed 54 MPH at 5800 RPM.-----A 21" pitch SST ----Good acceleration top...
  18. R

    Mystery small Johnson 65? 6hp?

    Will work to evaluate this engine.-----Just don't run full throttle too much.
  19. R

    Loss of power, won't plane

    I have done my own boring at friends workshop.----Cost me $25 / hole + set of honing stones and my time for the work.----Pistons / rings and gaskets.----Most bearings can be re-used based on my experience !
  20. R

    Loss of power, won't plane

    Had a panic call from a dealer.-----Looking for a rebuilt block.----Did the job for way less that what you are spending.---Dealer gave me an extra bunch of beer tokens as well.
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