Seamule Flushmaster 4 Outlet Automated Outboard Flushing System Upgrade your system to automate flushing your outboard system. Flushmaster is an innovative way to take the pain out of routine maintenance and get you back out on the water faster! This portable flushing device can be used on up to four outboards. This system runs on 3 AA batteries and can be pre-programmed to run for how long you need it to then automatically shutting off when maintenance is done. This portable device can be mount