1972 65 hp evinrude won't reverse

[cal sag]

Hey everybody, my 1972 evinrude won't go into reverse. i tried jumping the lower unit at the knife connections at the power head and that didn't work. Any suggestions on my next step and how to fix it would be greatly appreciated. Thanks.

M.K.

[Daviet]

You might try checking the ohms going to the coils and see if maybe you have a broken or shorted wire.

[F_R]

Did you jump to BOTH the blue and green wires at the same time, with it running? That is what is required for reverse.

If that doesn't make it shift, check the ohms and make sure it is full of the correct gear oil (no water). Finally, if all that checks out, it is L/U rebuild time. But usually, if neutral and forward work, reverse will too. But not always.