Home › Forum › Ask A Member › 1955 Johnson 10 HP QD-16, driveshaft won’t engage with lower unit › Reply To: 1955 Johnson 10 HP QD-16, driveshaft won’t engage with lower unit
Tubs brings up a good point..Perhaps the rubber prop hub is totally shot….
Are you sure the shift linkage is connected/adjusted properly? You didn’t pull out that little phillips screw at the bottom of the gearcase did you? (Yes, I realize that the 1955 models didn’t use that pin, but perhaps someone swapped out the gearcase). If you removed that phillips screw, then the inner shift linkage fell out of position which might explain why it isn’t shifting into gear…
Finally, if you suspect the crank splines are shot, there is one further test to perform to confirm/deny this condition. Put the engine in a test tank/barrel and start it up… Does it pump water? If so, then the splines are OK because the driveshaft must be turning. If the engine does not pump water, then the crankshaft splines may be an issue.