Finally installed my "new" used lower unit on 2000 Johnson 115. I rebuilt the water pump as suggested. I'm not saying I didn't do anything incorrectly but I was very diligent about making sure the impellor was installed correctly. etc and it seemd to move fine manually., Anyway Motor would not ****. Couple things 1-had it on muffs and 2- I got nervous and only ran the motor for 5- 10 seconds at most. Could it be the muffs are not best option to get the motor pissing? I'm hoping that's the issue. Any feedback would be grealty appreciated. -Thanks all