Clymer Outboard Engine Manual - Mercury

Mercury 3 -275 HP

1990 to 1993

-Quick Reference Data
Frequently used specifications on specially marked pages.
-General information
Manual organization, lubricant types, corrosion prevention, and propeller design.
-Tools and Techniques
Common tools, test equipment, shop safety and mechanic's tips.
-Troubleshooting
Easy-to-follow text and charts guide you from symptoms to solutions.
-Lubrication, Maintenance and Tune.up
All the tasks required for safety and top performance.
-Timing. Synchronhzaiion and Adjusting
Carburetor and Ignition adjustments; synchronization to ensure best performance.
-Fuel System
Complete overhaul procedures for throttle plunger, integral fuel pump, Mercarb WMA, WMC, WME, WMH and Mercarb centerbowl carburetors; primer, electric choke and enrichment systems; fuel pump service; service and maintenance for electronic fuel injection (EFI) systems.
-lgnition and Electrical Systems
Testing and replacement procedures for starting, charging and ignition systems.
-Power Head
Complete overhaul procedures for all models.
-Lower Unit and Drive Shaft Housing
Complete drive train overhaul and adjustment procedures.
-Power Trim and Tilt System
Electrical and hydraulic systems service and parts replacement.
-Oil Injection System
Maintenance, adjustment, testing, troubleshooting and parts replacement procedures for AutoBlend II, constant-ratio and variable-ratio oil injection systems.
-Manual Rewind Starters
Manual starter disassembly and reassembly, starter rope and rewind spring replacement procedures.
-Index
Reference and cross-reference to all major sections of the manual.
-Wiring Diagrams
Complete schematics for all models.