1981 Mercury 45-225hp Outboard Workshop Service Repair Manual PDF Download

Go ahead to take this service manual.Please contact to us if with any problems..
This manual can be used by anyone from a first time owner/amateur to a professional technician.Easy to read type,And give you all the information needed to do the procedure correctly.Keep this parts manual handy and use it often. Performing routine,preventive maintenance will save you time & money by helping to prevent premature failure and unnecessary repairs.

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MODELS COVERED:

Mercury Merc inline 3 (1972-1989)
Mercury Merc inline 4 (1972-1989)
Mercury Merc inline 6 (1972-1989)
Mercury Merc V6 (1972-1989)

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MANUAL CONTENTS:

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 / Troubleshooting lightning energizer ignition system / Distributor-type CD ignition system troubleshooting / Flywheel CD ignition system troubleshooting / Spark advance/idle stabilizer module troubleshooting / Fuel system / Engine / Specifications

CHAPTER FOUR / LUBRICATION, MAINTENANCE AND TUNE-UP
Model designation / Lubrication / Proper fuel selection / Recommended fuel mixture / Correct fuel mixing / Oil injection / OilBlend injection / 879 oil injection system / Lower drive unit lubrication / Salt water corrosion of gear housing bearing carrier and nut / Storage / Complete submersion / Engine flushing / Tune-up / Compression test / Spark plug plugs / Lower unit and water pump check / Fuel line service / Fuel pump filter service / Inline canister fuel filter service / Fuel pump pressure test / Battery and starter check / Solenoid check / Alternator and rectifier check / Timing, synchronization and adjustments / On-boat performance test / Specifications

CHAPTER FIVE / TIMING, SYNCHRONIZING AND ADJUSTING
Mercury 500 with lightning energizer ignition / Mercury 500 with distributor-less ignition (to serial No. 4576236) / Mercury 500, 40 and 50 (4-cyl) with distributor-less ignition (serial No. 4576236 and above) / Mercury 650 distributor-less ignition / Mercury 650 with distributor CD ignition / Mercury 700, 70 (prior to 1984), 60 and 50 (3-cyl) with flywheel CD ignition / 1987-on Mercury 70, 80 and 90 / Mercury 850 with distributor CD ignition / Mercury 75, 80 (prior to 1984), 800 and 850 with distributor-less ignition / Mercury 900, 1150, 1400, 1500 and 1500XS with distributor CD ignition / Mercury 90, 115 and 140 hp (6-cly) with distributor-less ignition / Mercury 100 (1988-on) and 115 (1989) with flywheel CD ignition / Mercury 1750 V6 (1976-1977) / Mercury 1750 and 175 (1978-on) / Mercury 135, 1500, 150, V150 XR2, 2000 and 200 V6 (below serial No. 6073192) / Mercury 150 XR4, 200 V6 (above serial No. 6073191) and 225 V6 / Specifications

CHAPTER SIX / FUEL SYSTEM
Fuel pump / Integral fuel pump carburetor (except 45 and 50 [4-cyl] hp models) / Integral fuel pump carburetor (45 an d50 [4-cyl] hp models) / Model 100 and 115 concept 2+2 / Center bowl carburetor / Dual-float center bowl carburetor / Sidebowl and back drag carburetor / WME carburetor / Electronic fuel injection (EFI) / Enrichener valve and choke solenoid systems / Anti-siphon devices / Fuel tank / Fuel line and primer bulb / Specifications

CHAPTER SEVEN / IGNITION AND ELECTRICAL SYSTEMS
Battery / Battery charging system / Starting system / Starter motor / Ignition system / Lightning energizer ignition (model 500 through 1975) / Thunderbolt CD ignition system with distributor / Thunderbolt CD ignition system (without distributor) / Specifications

CHAPTER EIGHT / POWER HEAD
Engine serial numbers / Gasket and sealant / Power head / Specifications

CHAPTER NINE / LOWER UNIT AND DRIVE SHAFT HOUSING
Service precautions / Standard gear housing / Water pump / Bearing carrier and propeller shaft / Pinion gear, drive shaft and forward gear / Lower shift shaft, bushing and cam / Pinion depth/gear backlash / Model R drive gear housing / Drive shaft housing / Trim tab adjustment / Specifications

CHAPTER TEN / POWER TRIM AND TILT SYSTEM
External power trim system / Hydraulic pump / Troubleshooting / Solenoid test / Trim limit adjustment / Trim cylinders / Integral power trim system / Hydraulic pump / Troubleshooting / Specifications

INDEX

WIRING DIAGRAMS

Models covered:
1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 Mercury Merc inline 3
1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 Mercury Merc inline 4
1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 Mercury Merc inline 6
1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 Mercury Merc V6



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Mercury Merc inline 3 (1972-1989)
Mercury Merc inline 4 (1972-1989)
Mercury Merc inline 6 (1972-1989)
Mercury Merc V6 (1972-1989)



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