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  1. R

    Backfire from exhaust

    What oil are you using ?----Oil injection working ?-----Post the compression numbers.---Then again the low speed mixture screws might need to be adjusted to richen the mixture a bit.
  2. R

    1987 johnson v4 110 cyl 4 not running

    Sounds like there is an issue with crankcase compression or fuel pump diaphragm.-----Motor needs 4 things to run---Crankcase compression.---Correct amount of fuel.----Spark at the right time.---Compression in cylinder.----Is the replacement fuel pump ( 2 nipples ) mounted correctly on the intake...
  3. R

    1975 25hp Evinrude Overheating

    The tube MUST be installed into the exhaust housing first !!----The grommet in the exhaust housing is easy to replace.----Stop running this motor until you sort this out.----And how can you be sure that it is going into the grommet in the exhaust housing ??
  4. R

    1975 25hp Evinrude Overheating

    Was the water tube installed into the grommet in exhaust housing first.----Or did tube stay in the pump ?-----I was not looking over your shoulder during this work, sorry.
  5. R

    Bolting motor to transom

    Just 4 bolts 1/2" hold it.------4 bolts will hold a 150 HP so should be adequate for a little 40 HP motor.
  6. R

    1975 25hp Evinrude Overheating

    Is the water in your test bucket 6" or 8" above the impeller ?
  7. R

    1977 OMC 120, lost drive and reverse

    If it is the standard control box from factory the switch is in the control box.----They are proud of those switches.----Check all the wiring.----May also be a loose wire on ignition switch.
  8. R

    What year 85 HP Johnson

    You will not find that o-ring at the hardware store as stated earlier.
  9. R

    1977 OMC 120, lost drive and reverse

    Sounds like the splines on the water pump shaft are rusted out ( stripped ) fairly common event..-----Or you have lost power to the shift switch.----Find the wires that go down into the lower unit and see if you have 12 volts on green with control in forward ( key turned on )----12 volts on blue...
  10. R

    1961 18hp johnson overheating

    Oh well.----It should be easy to diagnose overheating on a simple 18 HP motor.
  11. R

    1961 18hp johnson overheating

    There is not enough water in your test bucket !!----Add 6" (15 cm )of water and test run.----Motor does not sound right to me.
  12. R

    Backfire from exhaust

    Likely the timing is off , wires wrong or sheared flywheel key
  13. R

    Johnson 20hp 1973 carburetor

    The above parts breakdown does not list the nozzle or a replacement carburetor.------Easy fix for this problem here.-----But the poster is overseas.
  14. R

    Backfire from exhaust

    First check flywheel key.----Check to make sure wires are going to correct coil and cylinder.
  15. R

    79 Evinrude 115 gear shift problem

    The lever that goes across under the carburetors is it vertical in neutral ?----Post a picture ?
  16. R

    Water coming out of mid section 1978 75hp

    I would say it is normal.----But remove lower unit and replace that rubber seal for exhaust.---I doubt that it is the base gasket ?
  17. R

    Johnson 20hp 1973 carburetor

    Replacement carburetor ?----Check E-bay.----Make a new nozzle.
  18. R

    79 Evinrude 115 gear shift problem

    Did you buy from a shop ?-----Warranty ?----Any advice from seller ?
  19. R

    Johnson 20hp 1973 carburetor

    It is called a NOZZLE.-----It is not the high speed jet---Normally that part does not require replacement.----What happened ?----Your location ?
  20. R

    79 Evinrude 115 gear shift problem

    With rod measured at 21-27/32 in neutral to center of the hole it should work like every other motor.----Perhaps there is an issue inside the lower unit ?
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