Home › Forum › Ask A Member › 1961 40hp Evinrude difficult to turn under compression › Reply To: 1961 40hp Evinrude difficult to turn under compression
OK, well the book shows that the compression relief was still used in 1961, which is the year I’m guessing at based on the engine cover. Those head bolts look messed with, so the head could have been swapped with a later model that does not use this feature. One thing to keep in mind is that the compression relief is not activated when the electric starter is used, so it has no effect when cranked with the starter motor.
OK, you cleaned up the starter, which improved things slightly. Are you sure the battery cables are in good shape? Are you using jumper cables or the cables in the engine harness? Might be easier to just try another starter motor….