1994 Johnson/Evinrude Outboards 40 thru 55 Service Manual, Page 302Get this manual
Component Description
LJ directs fluid
CHECK VALVEWhen opened by pump pressure, it to bottom of cylinder to move piston UPWhen opened by pump control piston, it allows low pressure fluid to return to the pump as the piston moves DOWNMANUAL RELEASE VALVEWhen opened minimum of three turns, it allows the engine to be manually raised or lowered