do I need to replace it when it drips about once per second from the pee hole,running at idle on the hose.The motor is an 85 johnson,10 hp.Also. if it needs replacing,do I need to drain the gearcase before removal?
I would first make sure the tube is clear by blowing air into it, If that does not work then you might need a new water pump. You donot need to drain the gearcase to do this.