Hi Everybody,<br /><br />I have been busy reading and learning and now I need to post. I have just replaced the water pump and impeller from my 150 that has been in storage for about 10 years. I do have one question that was not mentioned in the repair book.<br />When I assembled the lower unit and aligned the drive shaft, there was mention of rotating the prop shaft if needed to align the drive shaft splines. <br />If I move the prop shaft with the gear in forward, I can rotate the prop clockwise and get a clicking sound but the drive shaft does not move.<br />I know it is engaged in forward so I was wondering if there is some kind of clutch in the transmission to allow the prop to slip at slow speeds. <br />I did assemble the lower unit and start the motor and the forward, neutral, and reverse all work as expected. <br />I was just wondering if the slipping is normal?