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  1. R

    1981 Mercury 7.5 2 stroke

    I doubt you will ever find one at 165 PSI.-----Remove bypass cover and have a look at pistons / rings.----Just 3 screws and make a new gasket.
  2. R

    2000 30hp Johnson possible water restriction/over heats

    Those 25 / 35 HP all had 2 fuel pumps installed at the factory.
  3. R

    1st time buying old boat

    See more trouble today caused by mis-adjustment of mechanical shift rod and slow shifting by newbies.
  4. R

    1981 Mercury 7.5 2 stroke

    ???-----The intake ports on the 7.5 are smaller !
  5. R

    Overide spring ?

    Correct----The spring keep choke plates from moving at full throttle.
  6. R

    1st time buying old boat

    There is absolutely nothing wrong with the concept of hydro-electric shift.----Elegantly simple and reliable.----Just not well understood by folks today.
  7. R

    2000 30hp Johnson possible water restriction/over heats

    The water passage to the block is cast in place in the exhaust housing..----Just a more " modern " looper design.----A very strong motor with a slightly different version of a 70 HP crankshaft.----Same main bearings as the 70 HP.
  8. R

    1981 Mercury 7.5 2 stroke

    The 7.5 ( COMET ) model has smaller intake ports than the 9.8 version.-----Throttle does not need to be open for a compression test.------Remove bypass cover to look for possible piston / ring damage if you feel compression is low.
  9. R

    2000 30hp Johnson possible water restriction/over heats

    I doubt you can pull the exhaust cover on this motor !----There is not one.
  10. R

    2000 30hp Johnson possible water restriction/over heats

    The lower unit should slide into place.-----Never use the bolts to pull it together.-----If the oil mixing unit is still in use , take it off and throw it away.
  11. R

    1st time buying old boat

    Just zoomed in on the control box.-----Boat in post #1.-----Appears to have a throttle and shift cable.----Not electric shift and 73 or newer motor.
  12. R

    2000 Johnson 70 j70plsis

    What item # is 350943 and on what parts page ?-----To me it looks like it was machined ( error ) and let go by inspection.----In 2000 there were issues with OMC as company was in trouble.
  13. R

    Johnson 115 track year model

    Inspect / replace fuel pump diaphragm.-----Simple to do.
  14. R

    Johnson 115 track year model

    You started poorly with an incorrect model #.-----No plastic float bowls in 83 model year.-----So it is 100% a 1983 model.----Hence the request to reread the model #,-----Parts are easy to find here. ----Trouble shooting is required by you.----Did you witness a compression test ?----Post the...
  15. R

    Johnson 115 track year model

    Those carburetors are NOT SENSITIVE at all.----Very simple and reliable.-----But if carburetor bowls ( plastic ? ) are warped you may see issues.
  16. R

    1998 Force/Mercury 120 HP - Good Motor?

    Site owners have mandated this !----I too feel they are wrong.-----But remember this is a site that looks at selling parts / manual.----Not wanting to carry a huge FREE information storage bank.
  17. R

    Johnson 115 track year model

    Sounds like a 1990 model.-----Reread model #------Simple and very good motor when it left the factory.-----Install a new water pump impeller before leaving the dock.-----Any boat shop will get you the parts I think.-----crowley marine -----evinrudeparts.ca----- and this site you are on.-----your...
  18. R

    Evinrude Tilt Trim motor

    No thanks ---I have lots of good drive couplings laying around.----Perhaps get your money back from seller?
  19. R

    Evinrude Tilt Trim motor

    There is only ONE DRIVE COUPLER.-----Perhaps one of the check valves is stuck.-----And no it does NOT need to be installed on a motor to see tilt and trim rams moving to their limits
  20. R

    Evinrude Tilt Trim motor

    The tilt cylinder might need to retract all the way BEFORE trim cylinders move. !
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