Last summer I was out on the boat. Noticed a kind of ticking coming from rear end of boat. I heard the same if you spin the prop out of the water. I was taking it easy coming back to shore and I heard a bang then lost all thrust. When boat is in gear it wants to die. However neutral it runs. I drained lower to check for metal shavings but didn't notice anything too out of the normal. Any ideas what couldve broke?
I inspect in the fall on the alpha1 top cap.. now If I found some water drips I have to fix the out drive with a leak... the small O ring top/bottom has the oil movement top to the bottom ...has that leak...I put a 7-10psi on the top oil port with an air gauge and also I replace the water pump assy then inspect the air pressure for 24 hrs..
when I replace the oil I drain the bottom port ...remove the top cap... then I put new oil on the top cap then the old oil drains out and then it looks like new.. then I put the bottom plug locked up then install 34oz ....
your picture looks nasty ... put mineral sprints in your outdrive .. put it on the top cap.. then drain it out then fill it up to min spirits take a day or so then drain it and then install and the inspection parts..
back in the old days I used engine oil to flush out the old oil ... then put the correct drive train oil fluid ....