i have a 2004 yamaha 60 and can't loosen the plug to drain lower unit. i'm a pretty strong guy and it will not budge. it is a slotted screw for a standard tip screw driver. does anyone have any tips, before i wallow out the slot?
yes, the proper tool is called a hand impact driver and is avalible at most any auto parts store.
DO NOT use the driver to reinstall the plug just for removal.