Mariner outboards were introduced in the early 1970s by Mercury Marine, the American marine-engine company founded by Carl Kiekhaefer in Wisconsin in 1939 and part of Brunswick Corporation since 1961. Mariner was created as a companion brand selling Mercury-designed outboards through separate dealer networks, including many international markets, and the two ranges shared basic engine designs for much of their history.

Mariner motors are known for practical, dependable power on runabouts, fishing boats and offshore craft. The line has spanned two-stroke classics and modern four-stroke engines, from small portable models of a few horsepower to V6 engines above 200 horsepower, with carbureted, EFI and direct-fuel-injection versions well represented in the manual collection.

The workshop manuals on this page document Mariner outboards in detail, including powerhead and block overhaul, carburetor and fuel-injection systems, ignition and charging circuits, cooling, lower-unit and gearcase service, trim and tilt mechanisms, wiring diagrams, torque specifications and diagnostic procedures. Scheduled maintenance guidance supports reliable operation. Model-year coverage in the listings runs from carbureted two-strokes of the 1970s and 1980s through the fuel-injected four-strokes of recent years, with the engine sizes and serial ranges stated for each manual.

These manuals benefit boat owners who service their own engines, marine mechanics, rental and charter operators and buyers of used Mariner-powered boats. Factory procedures help keep these motors starting easily and running dependably season after season.