windshield washer

My 2011 Marlin windshield washer valve has stopped working. Has anyone replaced before? I would like to know how I access behind the small panel that it's mounted on! For the time being I need to cap the incoming line from the water tank so I don't have water leaking out the washers when the...

Anyone run into this issue when you turn on the Fresh Water pump and water comes shooting out from the under the windshield wiper? I am assuming that is a windshield washer line? I dont see a shut off for it on the cockpit switches? I am thinking of just caping the line. Express 330 2002