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  1. J

    '81 40hp no spark

    1981 40hp mercury, elec. start, remote control, type IV tbolt ignition, s/n 5899567. The stator, trigger and kill switch circuit are all working fine. I replaced the plugs, wires and coils for good measure and I have checked all the wires for cuts and nicks and they look good. Problem is I am...
  2. J

    1981 40 hp merc. Part I.D.

    If you click on the link to the thread below there is a picture of 402 40 hp. In the pic there is a little blue thing on the left hand side of the powerhead. Can anyone tell me what that is? My boat has one as well and looking at it from the side it looks like a condenser from a points ignition...
  3. J

    40 hp merc no spark, bad flywheel magnets?

    I have an '81 40 hp merc 2 cyl. 2 stroke ser. # 5899567. No fire to either spark plug. Stator and trigger sending voltage to switch box. No voltage from switch box to coils. The boat quit last time out and I noticed a clicking noise when I was trying to start it back. Took off flywheel and one...
  4. J

    Prop size vs RPM question

    I had a new prop put on my boat, not 100% sure but I think the one they put on is slightly bigger than the old one. I think the old one was a 10-1/8" and the new one is a 10-1/2". I took it out first time it ran smoother (rebuilt carb and fuel pump also), it was also a lot quieter but it didn't...
  5. J

    1981 Mercury 40 HP 2 cyl. 2 stroke Serial #5894xxx

    I was putting around at about 1/4 throttle when I took off, the boat didn't seem to run up the rpm's like it should and died pretty quickly. Restart it but it won't run up rpm's in neutral and it dies when I engage the drive. Finally just gets to where it won't even start. Get home and there is...
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