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  1. The Force power

    1975 Mercury 650 starter issue

    YES
  2. The Force power

    1975 Mercury 650 starter issue

    In addition.... if these Battery-cables are original? replace them with suitable gauged Such as #4 (perhaps the switch is the cause?) Also it is not the voltage that is required to crank the starter but amperage Imagine a kink in the garden hose water, it reduces the amount of water but it...
  3. The Force power

    Starting and maybe restoring old Mercury 402 40hp

    You can check the switch on the motor while tilted up for continuity strip the wire as close as possible at the switch. The check-valve in the quick-connect has no other function then to prevent fuel leaking out of the hose WHEN disconnected, so no you don't needed right now. "from my...
  4. The Force power

    Starting and maybe restoring old Mercury 402 40hp

    You could check if the Mercury-switch is still good by soldering a new wire on & check for continuity by tilting it (bench-testing is easier) (2) You can hook a fuel hose with primer bulb directly to that & just drop the other end in a fuel jug (jerry can) You have not mention the serial# so it...
  5. The Force power

    Starting and maybe restoring old Mercury 402 40hp

    Yes, I guess I was!
  6. The Force power

    Starting and maybe restoring old Mercury 402 40hp

    Okay, I must have it all wrong I apologies to all
  7. The Force power

    Starting and maybe restoring old Mercury 402 40hp

    Hi Merc850, The particular fuel-pump I was Referring to was equipped on an early 70s 65 hp 3 Cylinder Merc. I'll have to take your word for it although I can't see HOW it would cool the fuel as this was connected to the hot side (tell-tail water)
  8. The Force power

    Starting and maybe restoring old Mercury 402 40hp

    Hmmm, it got quiet I guess I was not talking nonsense!!!
  9. The Force power

    Starting and maybe restoring old Mercury 402 40hp

    For better combustion see page #36
  10. The Force power

    Starting and maybe restoring old Mercury 402 40hp

    have you ever been to China?
  11. The Force power

    Starting and maybe restoring old Mercury 402 40hp

    1st. we're talking Mercury not Johnson! 2nd. the late 70s 50 hp 4 cylinder or 65 hp 3 cylinder (I'm not sure) had small hoses running through the fuel-pump to pre-heat the fuel How would it be cooling the fuel if the hot water from the head would run through the fuel-pump?!? I guess that concept...
  12. The Force power

    Starting and maybe restoring old Mercury 402 40hp

    sorry I meant pump, maybe I mixing them up with other pumps that pre-heated the fuel
  13. The Force power

    Starting and maybe restoring old Mercury 402 40hp

    okay
  14. The Force power

    Starting and maybe restoring old Mercury 402 40hp

    It would be nice to have the serial# of the outboard so we would know exactly what unit we're talking about (2) it has everything to do with in reverse because when the reverse-lock would not work the motor / LU will pop out of the water (3) and is routed through the fuel-heater/pump (4) Yes...
  15. The Force power

    Starting and maybe restoring old Mercury 402 40hp

    I thought the later blocks were made by Yamaha ?
  16. The Force power

    Starting and maybe restoring old Mercury 402 40hp

    Correction on #4 not recirculation hose! see diagram
  17. The Force power

    Starting and maybe restoring old Mercury 402 40hp

    question....I thought the later years were Yamahas blocks correct?
  18. The Force power

    Starting and maybe restoring old Mercury 402 40hp

    I had two of these, there were not bad little engines except the water-jackets tend to weep-/leak when cranking the engine in neutral it is normal for the prop to turn, due to oil in the gear-box (as long as the clutch is not engaged, easy to verify by holding the prop still while cranking)...
  19. The Force power

    Fouling spark plugs

    Mine are going on 3+ years now
  20. The Force power

    70s force 70... No reaction from key

    As Nordin already mentioned; make sure your shifter is in neutral but also make sure the neutral-switch is pushed-in (located at the controls on engine side) IF pushed in...you could put a jumper across (to check if switch is good)
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