Diy Tilt Trike How Do I Tilt A Mercury 50hp Engine? I'm Very New To Boating. I Need To Lift Propellor Out Of Water On Slip

How do i tilt a mercury 50hp engine? I'm very new to boating. I need to lift propellor out of water on slip - diy tilt trike

I bought a boat in the UK with two engines of 50 hp mercury and other electric starter guide. I know very little about the boat engines. I'm good at DIY though. I have a house by the sea in Cork on the south coast of Ireland. Any advice on maintaining two engines. Is there a job available?
Any special things you should know about 50 HP Mariner.
Suggestions / help / advice appreciated.
BOB