Need to remove or replace a Mercury outboard lower unit? Here's a video playlist of gearcase maintenance and repairs for several Mercury outboard models.

Need to remove, repair, rebuild or replace a Yamaha outboard gearcase? Here's a video playlist of lower unit maintenance and repairs for various Yamaha outboard models.

Need to replace a Yamaha outboard motor water pump? Here's a video playlist of Yamaha outboard water pump repairs for various models.

Need to do oil changes for your Mercury outboard motor? Here's a video playlist of gearcase and engine oil changes for Mercury outboards.

Lower unit oil changes are an easy do-it-yourself outboard maintenance task. Here are the basics of changing outboard gearcase lube.

Need to do oil changes for your Yamaha outboard engine? Here's a playlist of lower unit and engine oil changes for Yamaha outboards.

How does an outboard's lower unit work? What about the ignition system or the anodes? Here's a playlist of videos on how several outboard parts work.

An outboard engine works more or less like a car engine, but modified for vertical mounting and marine conditions. Here's a guide to how an outboard motor works.

Owning an outboard motor doesn't come cheap. Find out about some basic outboard maintenance costs here.