The ignition side seal is easy to get to, because it is housed in a seal carrier plate that is attached to the cases by 4 screws. The seal on my CR360 motor reads 25 35 6/6.5, ( I think). But the numbers are very small and hard to read without a magnifying glass. The primary drive side seal is a bit harder (if its the same as a 390 motor) to get to because it sits in the left crankcase half, inside of the left main bearing. You can still change this seal without splitting the cases, if you have the right tools though. You need a special puller and also need to break the cage on the left main bearing . The puller has hooks that go between the ball bearings and pull the bearing out . Then you can get to the seal and hook it out as well.
