Re: 1972 Evinrude 9.5 HP won't tilt
If it won't tilt in forward gear, the release could be messed up. Check to see if the claw fingers are releasing from the tilt adjusting pin.
Actually, it should tilt in neutral also, if adjusted properly. There is a little lever on the shift linkage that gets bent easy and throws it off. OR, you may have some busted rubber motor mounts which will throw the geometry off. Broken mounts are very common on that motor, being one of the most often things to go wrong..