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  1. R

    Gas hose size 4 hp 1972 Evinrude

    Hose with 5/32 ID would be more to my liking.
  2. R

    1979 Mercury 80 worth it?

    Decals were used in 81 / 82 / 83 model years.----A very good motor if you are willing to learn how to fix it yourself.
  3. R

    Need help with tachometer

    That be the plug for a tachometer.----I have always said that electrical stuff / wires is confusing.
  4. R

    40th Annivesary

    So was your motor a 50th anniversary and a 72 model ?
  5. R

    1986 Johnson 150, bad crankcase seal between the two halves

    Maybe the bypass covers are warped.----It should be easy to find / correct any leaks on the crankcase.
  6. R

    Need help with tachometer

    Some had a plug on the control box.------I can not see or feel your control box !!-----Do not know if yours is a control box from 1973 or 1995 !!!
  7. R

    1974 Evinrude 25hp wont run.

    It appears he has a tester as per post #12-----Says he can't get more than about a 3/16" gap to fire.-----Posts a picture of it in #15 and apparently it will not fire across a 5/16" gap.
  8. R

    1996 Evinrude 200 HP Vindicator--Won't Start, Same Old Same Old

    The bulb is a simple manual fuel pump.----It must go hard when carburetors are full.-----Look into issues with electric primer valve or float valves.
  9. R

    200hp Mercury Opti-max

    A few bad reviews I think.
  10. R

    Honda BF20 gear selection issue

    When shifting on the repair stand you have to turn the prop.
  11. R

    40th Annivesary

    The 50th anniversary was 1972.
  12. R

    Mercury 15HP 4 stroke throttle sticking

    The motor is running when you try and shift it ?
  13. R

    1970 25hp deceleration after run at WOT

    ???---Look at the shaft on the port side of block.----And I know that the impeller drive pin is not plastic !!--I did not mention a pin on the driveshaft.-----Some simple trouble shooting needs to be done.----Good luck with your motor.
  14. R

    1970 25hp deceleration after run at WOT

    There is no difference between a 70 and 71 model except for cosmetics / color of paint.---Run with timing light hooked up and see if spark goes away on one cylinder.-----It should be easy to determine the loss of power.-----Plastic pin on bottom of vertical shaft still in one piece.
  15. R

    1970 25hp deceleration after run at WOT

    If coils have never been replace it is due for a set.----Pull the flywheel.
  16. R

    1974 Evinrude 25hp wont run.

    You think you have spark but to me it appears you don.t.-----With starting fluid the motor should at least bark at you like wild dog.-----revisit ignition work !!!!
  17. R

    Need help with tachometer

    It is a Mercury tachometer.
  18. R

    Kinda running Evinrude

    Why the----haha in post #3
  19. R

    1989 Evinrude 30 2-stroke losing power at high RPMs

    Looks like sparkplugs were not at fault.----I do not like plastic tanks.-----I prefer the metal tanks from the 1960's and 70's.
  20. R

    Kinda running Evinrude

    Compression is very suspect.-----I Would first test for proper spark ( 7/16" gap ) if that is good I would pull one of the cylinder heads.----Hopefully you did not buy a new VRO pump !-----A head gasket is cheap compared to throwing electronic parts at it.
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