This easy to use manual can save you hundreds of dollars in maintenance and repair bills. Step-by-step procedures and detailed illustrations guide you through every job.

Models Covered: Mercury 2-stroke outboards 1 through 6 cylinders

Inside you will find:

• Quick Reference Data: All the most frequently needed specifications on specially marked pages.

• General Information (in full color): Manual organization, lubricant types, corrosion prevention, and propeller design

• Troubleshooting: Easy-to-follow texts & charts guide you from symptoms to causes

• Lubrication, Maintenance & Tune-Up: All the tasks required for safety & top performance

• Engine: Disassembly, overhaul & assembly information. Including diagnostic procedures & adjustments.

• Drive System: Disassembly, overhaul & assembly information. Including diagnostic procedures & adjustments

• Fuel System: Fuel pump overhaul; carburetor overhaul and adjustment; fuel tank & line service

• Electrical Systems: Testing & Adjustment and replacement procedures for starting, charging, lighting, magneto, ignition & PEI systems

• Cooling System: System operation, maintenance, repair, rebuilding & troubleshooting

• Steering System: System operation, maintenance, repair, rebuilding & troubleshooting

• Index: Reference and Cross-reference

• Wiring Diagrams: Complete Schematics for all models.

QUICK REFERENCE DATA

CHAPTER ONE / GENERAL INFORMATION
Manual organization / Notes, cautions and warnings / Torque specifications / Engine operation / Fasteners / Lubricants / Gasket sealant / Galvanic corrosion / Protection from galvanic corrosion / Propellers / Specifications

CHAPTER TWO / TOOLS AND TECHNIQUES
Safety first / Basic hand tools / Test equipment / Service hints / Special tips / Mechanic's techniques / Specifications

CHAPTER THREE / TROUBLESHOOTING
Operating requirements / Starting system / Charging system / Ignition system / Fuel system / Engine temperature and overheating / Engine / Specifications

CHAPTER FOUR / LUBRICATION, MAINTENANCE AND TUNE-UP
Lubrication / Fuel selection / Recommended fuel mixture / Correct fuel mixing / Gearcase lubrication / Salt water corrosion of gearcase bearing carrier and nut / Storage / Anti-corrosion maintenance / Complete submersion / Engine flushing / Tune-up Compression check / Spark plugs / Gearcase and water pump check / Fuel system service / Fuel filter service/ Fuel lines / Fuel pump service / Breaker point ignition service / Breaker point replacement / Breaker point adjustment / Battery, starter and solenoid (electric start models only) / Choke solenoid resistance check / On-boat performance test / Specifications

CHAPTER FIVE / TIMING, SYNCHRONIZING AND ADJUSTING
Engine timing / Synchronizing / Required equipment / Merc model 39, 40, 60, 75 and 110 (1964-1969) / 1970 Merc model 40, 75 and 110 with Thunderbolt ignition / Merc model 110 with Phase-maker ignition / Merc model 200 (1967-1966) / Merc model 200 (1967-1969) / Merc model 200 with Thunderbolt ignition / Merc model 200 with Phase-maker ignition / Merc model 350 / Merc model 400 (1970-1971) / Merc model 500 (1964-1967) / Merc model 500 and 650 with lighting energizer ignition / Merc model 650 (1966-1967) / Merc model 650, 800 and 850 with Thunderbolt breakerless ignition / Merc model 950 and 1100 (Standard ignition) / Merc model 950SS and 1100SS (Thunderbolt breaker point ignition) / Merc model 500SS, 650SS, 950SS and 1100SS (1967 Thunderbolt breakerless ignition) / Merc model 1000SS and 1250SS (1968-1969 Thunderbolt breakerless ignition) / Merc model 1150 and 1350 / Specifications

CHAPTER SIX / FUEL SYSTEM
Fuel pump / Sidebowl carburetor / Integral fuel pump carburetor / Fuel tank / Fuel line and primer bulb / Specifications

CHAPTER SEVEN / IGNITION AND ELECTRICAL SYSTEMS
Battery / Charging system / Starting system / Ignition systems / Phelon magneto braker point ignition / Kiekhaefer 4-cylinder / Kiekhaefer 6-cylinder / Thunderbolt breakerless battery ignition / Lighting energizer breakerless ignition / Thunderbolt Phase-maker CD ignition / Thunderbolt CD breakerless ignition / Ignition coil replacement / Switchbox replacement / Specifications

CHAPTER EIGHT / POWER HEAD
Engine serial number / Fasteners and torque / Gaskets and sealant / Flywheel / Power head / Specifications

CHAPTER NINE / GEARCASE AND DRIVE SHAFT HOUSING
Service precautions / Gearcase / Water pump / Bearing carrier and propeller shaft / Pinion gear, drive shaft and forward gear / Shift shaft, bushing and cam / Pinion depth/gear backlash / Propeller / Pressure and vacuum test / Drive shaft housing / Trim tab adjustment / Specifications

CHAPTER TEN / AUTOMATIC REWIND STARTER

CHAPTER ELEVEN / POWER TRIM AND TILT SYSTEM
Power trim system / Hydraulic pump / Troubleshooting / Trim limit switch / Trim cylinders / Specifications

INDEX

WIRING DIAGRAMS

Models covered:
1964 1965 1966 1967 1968 1969 1970 1971 Mercury 3.9 HP
1964 1965 1966 1967 1968 1969 1970 1971 Mercury 4 HP
1964 1965 1966 1967 1968 1969 1970 1971 Mercury 6 HP
1964 1965 1966 1967 1968 1969 1970 1971 Mercury 7.5 HP
1964 1965 1966 1967 1968 1969 1970 1971 Mercury 9.8
1964 1965 1966 1967 1968 1969 1970 1971 Mercury 20 HP
1964 1965 1966 1967 1968 1969 1970 1971 Mercury 35 HP
1964 1965 1966 1967 1968 1969 1970 1971 Mercury 40 HP
1964 1965 1966 1967 1968 1969 1970 1971 Mercury 50 HP
1964 1965 1966 1967 1968 1969 1970 1971 Mercury 65 HP
1964 1965 1966 1967 1968 1969 1970 1971 Mercury 80 HP
1964 1965 1966 1967 1968 1969 1970 1971 Mercury 85 HP
1964 1965 1966 1967 1968 1969 1970 1971 Mercury 90 HP
1964 1965 1966 1967 1968 1969 1970 1971 Mercury 95 HP
1964 1965 1966 1967 1968 1969 1970 1971 Mercury 100 HP
1964 1965 1966 1967 1968 1969 1970 1971 Mercury 110 HP
1964 1965 1966 1967 1968 1969 1970 1971 Mercury 115 HP
1964 1965 1966 1967 1968 1969 1970 1971 Mercury 125 HP
1964 1965 1966 1967 1968 1969 1970 1971 Mercury 135 HP

Clymer Repair Manual Mercury 3.9 HP Manual
Clymer Repair Manual Mercury 4 HP Manual
Clymer Repair Manual Mercury 6 HP Manual
Clymer Repair Manual Mercury 7.5 HP Manual
Clymer Repair Manual Mercury 9.8 Manual
Clymer Repair Manual Mercury 20 HP Manual
Clymer Repair Manual Mercury 35 HP Manual
Clymer Repair Manual Mercury 40 HP Manual
Clymer Repair Manual Mercury 50 HP Manual
Clymer Repair Manual Mercury 65 HP Manual
Clymer Repair Manual Mercury 80 HP Manual
Clymer Repair Manual Mercury 85 HP Manual
Clymer Repair Manual Mercury 90 HP Manual
Clymer Repair Manual Mercury 95 HP Manual
Clymer Repair Manual Mercury 100 HP Manual
Clymer Repair Manual Mercury 110 HP Manual
Clymer Repair Manual Mercury 115 HP Manual
Clymer Repair Manual Mercury 125 HP Manual
Clymer Repair Manual Mercury 135 HP Manual

Mercury 3.9 HP (1964-1971)
Mercury 4 HP (1964-1971)
Mercury 6 HP (1964-1971)
Mercury 7.5 HP (1964-1971)
Mercury 9.8 (1964-1971)
Mercury 20 HP (1964-1971)
Mercury 35 HP (1964-1971)
Mercury 40 HP (1964-1971)
Mercury 50 HP (1964-1971)
Mercury 65 HP (1964-1971)
Mercury 80 HP (1964-1971)
Mercury 85 HP (1964-1971)
Mercury 90 HP (1964-1971)
Mercury 95 HP (1964-1971)
Mercury 100 HP (1964-1971)
Mercury 110 HP (1964-1971)
Mercury 115 HP (1964-1971)
Mercury 125 HP (1964-1971)
Mercury 135 HP (1964-1971)