Originally Posted by
ky-slabseeker
You should have a o ring on the end of the manual release valve.If this o ring is bad it will let your motor slowly leak off.The manual release valve should be the big screw located near the bottom.You can unscrew it and the o ring will be on the end of it.It is like this on a merc anyway....I hope this helps you ...
Those manual relief valves are a common source of problems. If not tight or if the "O" rings get hard over the years the motor will slowly drop down after being raised.
Fair Winds and Following Seas
Bill H. PTC USN Ret
Chesapeake, Va