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  1. R

    Cylinder not running

    You need 4 things for motor to run.------Crankcase compression.-----Spark at the right time.----Correct amount of fuel.-----Compression in cylinder.-----How did you determine there is gas at the top cylinder.----Does the spark jump a gap of 3/8" or more ?-----Checked fuel pump diaphragm...
  2. R

    1971 50 hp hydroelectric drive won't go into neutral

    Not sure why you are chasing issues with solenoids.----I do not believe there is anything wrong with them !!-----The tubes are plastic for covering / insulating the wiring.----Carefully assemble the solenoids and look for the real problem.
  3. R

    1977 Evinrude 75 hp on 16 fiberglass runabout prop question

    Sometimes folks are a little reluctant to do some simple trouble shooting.-----Is there a local shop that has a proper test propeller to determine motor power output ?---Any chance the boat has foam flotation that is water logged ?
  4. R

    1977 Evinrude 75 hp on 16 fiberglass runabout prop question

    I say there is something wrong with the boat or the motor , or both.------You should not need a 13" pitch prop on a 16' boat !
  5. R

    1971 50 hp hydroelectric drive won't go into neutral

    When the motor is NOT RUNNING it will be in forward gear.-----It shifts into neutral in less than ONE turn ( yes 1 turn ) of the flywheel when 12 volts is applied to green wire.------There is very little that goes wrong with these solenoids.----Not sure why you are digging into this.----What ohm...
  6. R

    1971 50 hp hydroelectric drive won't go into neutral

    What happens if you put 12 volts directly to the green wire at the motor ?
  7. R

    1977 Evinrude 75 hp on 16 fiberglass runabout prop question

    The 17" would bring it down to about 4700 / 4800 RPM.-------I would think that boat if in good condition would run with a 17" pitch prop.-----That is if the engine is putting out the proper power.
  8. R

    1971 50 hp hydroelectric drive won't go into neutral

    On a hose and on the trailer the prop may spin in neutral.------Has to to with oil drag on the bearings.----Use a stick to see if you can stop the prop.
  9. R

    1986 90HP Crossflow Johnson - RPMs increase at WOT when steering

    Run with a timing light one cylinder at a time.-----See if there is a spark issue in the turns.
  10. R

    Flywheel movement

    There has to be some clearance for the oil film.----Ever heard of a ----" hydrodynamic wedge "-----When it comes to oil and lubrication ?
  11. R

    1990 Evinrude 48 HP SPL - Is there an inline fuse on the motor?

    Find the fuse on the motor wiring harness,----Near the starter solenoid.----A wee black rubber device / plug that pull apart.----If you had wires backwards you might as well order a rectifier too.
  12. R

    Flywheel movement

    This particular motor has roller bearings ( not a ball bearing ) at the top of the crankshaft.-----And a roller bearing for center main.------A ball bearing for the bottom bearing.----Roller bearings MUST have clearance to operate.----Therefor we need a dial indicator reading.-----Other guesses...
  13. R

    1991 Evinrude 60hp VRO - Won't Idle

    Carburetor kits will fix it.
  14. R

    1986 90HP Crossflow Johnson - RPMs increase at WOT when steering

    Water in the fuel ?----Drain float bowls and have a look.----Just 1 screw on each carburetor.----Costs nothing to check.
  15. R

    1978 Johnson 70HP head scratcher

    You are soon going to have a motor that runs fine.
  16. R

    Is this steam normal.. 1984 50hp Mercury

    25 PSI is a good pressure.----And no it does not blow the grommet.
  17. R

    Flywheel movement

    Posted in the Johnson forum.----And a 1994 model 120 would be a 2 stroke !
  18. R

    what model of mercury motor do i own ?

    Everybody picks on the carburetors for some reason.-----Compression test is first thing to do.
  19. R

    1994 Evinrude HE3RERM 3.3hp anybody know anything on this animal ??

    I think it is not a true Evinrude product.-----It is one of them there offshore motors.----Marketed by Mercury, Johnson , Evinrude and others.----Check that out on Mercury parts pages.----You will find a near identical motor with black paint !
  20. R

    what model of mercury motor do i own ?

    I would say your serial # falls in the first group.-----Clearly not in the group with 7073473 as the first serial #.-----Your location ??----What parts do you need ?
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