Mercury 3.9 - 135 HP Outboards, 1964-1971 B719

DESCRIPTION and MODELS COVERED
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

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

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

CHAPTER FOUR / LUBRICATION, MAINTENANCE AND TUNE-UP
Lubrication / Storage / Anti-corrosion maintenance / Complete submersion / Engine flushing / Tune-up

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

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

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

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

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

CHAPTER TEN / AUTOMATIC REWIND STARTER

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

INDEX

WIRING DIAGRAMS

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 MERCURY 20 HP
1964-1971 MERCURY 3.9 HP
1964-1971 MERCURY 35 HP
1964-1971 MERCURY 4 HP
1964-1971 MERCURY 40 HP
1964-1971 MERCURY 50 HP
1964-1971 MERCURY 6 HP
1964-1971 MERCURY 65 HP
1964-1971 MERCURY 7.5 HP
1964-1971 MERCURY 80 HP
1964-1971 MERCURY 85 HP
1964-1971 MERCURY 9.8
1964-1971 MERCURY 90 HP
1964-1971 MERCURY 95 HP