1987-1993 Mercury 70, 75, 80, 90, 100, 115 2-Stroke Outboard Motor Service Manual

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1987 1988 1989 1990 1991 1992 1993 Mercury 70, 75, 75 Marathon, 75XD, 75 Seapro, 80, 90 (3 cylinder,  2 stroke) Outboard Motors

• UNITED STATES S/N 0A996142 thru 0D283221
• BELGIUM S/N 09502135 thru 09793576
• CANADA S/N 0A722297 and Above

1988 1989 1990 1991 1992 1993 Mercury 100, 115 (4 cylinder,  2 stroke) Outboard Motors

• UNITED STATES S/N 0B209468 thru 0D283221
• BELGIUM S/N 09523034 thru 09793576
• CANADA S/N 0A731673 and Above

Pages: 391
Format: PDF
File size: 9mb
Compatibility: Windows/Mac/Tablet

This PDF service manual contains OEM instructions to service and overhaul 1987-1993 Mercury 70, 75, 80, 90, 100, 115 outboard motors from top to bottom according to the manufacturer’s specifications. This is the same manual professional marine technicians use to diagnose and repair the outboard motor. Whether it’s routine maintenance, such as tune-ups and fuel system service, or more extensive repairs involving engine overhaul, this manual provides the most accurate information to perform the job.

Topics:

General Information and Specifications

• Electrical and Ignition
• Ignition System
• Battery, Charging System and Starting System
• Timing/Synchronizing and Adjusting
• Wiring Diagrams

Fuel System and Carburetion

• Pumps
• Carburetor
• Enrichener System

Oil Injection System

Powerhead (3- and 4-Cylinder Engines)

• General Information
• Torque Specifications
• Cleaning and Inspection
• Disassembly and Reassembly
• Crankshaft Assembly
• Cylinder Block and Cover Assemblies
• Connecting Rods
• Piston and Piston Rings
• Flywheel
• Exhaust Divider Plate and Exhaust Cover

Lower Unit

• Gear Housing
• Mid Section
• Shock Absorber

Power Trim

• Design I (Side Fill Reservoir)
• Design II (Aft Fill Reservoir)
• Single Ram

Outboard Motor Installation/Attachments

• Engine Attachments/Engine Installation
• Tiller Handle and Co-Pilot