Mariner 2.5 - 275 HP Outboards, 1990-1993 B715

DESCRIPTION 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 / Breaker-point ignition troubleshooting (1990-1992 2.5 hp models) / Capacitor discharge ignition (CDI) / Direct voltage test / Resistance test / Speed limiter / Spark advance/idle stabilizer module troubleshooting / Fuel system / Engine

CHAPTER FOUR / LUBRICATION, MAINTENANCE AND TUNE-UP
Lubrication / Storage / Anti-corrosion maintenance / Complete submersion / Flushing the cooling system / Tune-up

CHAPTER FIVE / TIMING, SYNCHRONIZING AND ADJUSTING
Ignition timing and synchronization / 2.5 hp models (prior to serial No. D90217) / 4 and 5 hp models / 8, 9.9 and 15 hp models / 20 and 25 hp models / 40 hp models / 50 and 60 hp models (prior to serial No. D000750) / 50 and 60 hp models (serial No. D000750-on) / 75 and 90 hp models / 100 and 115 hp models / 135-200 hp (except EFI) models / 250 and 275 hp models / 150, 175 and 200 EFI models

CHAPTER SIX / FUEL SYSTEM
Fuel pump / Carburetor / Throttle plunger carburetor (2.5 and 3.3 hp models) / Integral fuel pump carburetor (4 and 5 hp models) / Integral fuel pump carburetor with primer system (8-25 hp models) / WMA carburetor (40 hp models) / MerCarb center bowl carburetor (50 and 60 hp models prior to serial No. D000750) / WME carburetor (50 and 60 hp serial No. D000750-on, 75, 90, 100 and 115 hp models) / WMH carburetor (135-200 hp models) / MerCarb center bowl carburetor (250 and 275 models) / Thermal air valve (135-200 hp models) / Enrichment valve and choke solenoid systems / Anti-siphon devices / Fuel filter / Fuel tank / Fuel hose and primer bulb / Electronic fuel injection (EFI) / Fuel management tests

CHAPTER SEVEN / IGNITION AND ELECTRICAL SYSTEMS
Battery / Battery charging system / Starting system / Magneto breaker point ignition / Capacitor discharge ignition (CDI) (1993 [serial No. D901217-on] 2.5 and 3.3 hp models) / Capacitor discharge ignition (CDI) (4-275 hp models)

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

CHAPTER NINE / LOWER UNIT GEAR HOUSING
Service precautions / Gear housing / Water pump / Bearing carrier and propeller shaft / Pinion gear, drive shaft and forward gear / Lower shift shaft, bushing and cam / Propeller / Trim tab adjustment

CHAPTER TEN / POWER TRIM AND TILT SYSTEM
Manual tilt assist system / One-ram integral power trim system (40-60 hp models) / Three-ram integral power trim system (75-200 hp models) / One-ram Oildyne power trim system (250-275 hp models) / Power trim assembly removal/installation / Power trim motor and pump assembly removal/installation

CHAPTER ELEVEN / OIL INJECTION SYSTEM
AutoBlend II (50 and 60 hp prior to serial No. D000750) / Constant-ratio oil injection (40 hp and 50-60 hp models [serial No. D000750-on]) / Injection system service / Variable-ratio oil injection (75-115 hp models) / Warning horn system / Injection system service / Variable-ratio oil injection (V6 models) / Warning horn system / Injection system service

CHAPTER TWELVE / MANUAL REWIND STARTERS
2.5 and 3.3 hp models / 4 and 5 hp models / 8, 9.9, 15, 20 and 25 hp models / 40 hp models

INDEX

WIRING DIAGRAMS

1990-1993 MARINER 100 HP
1990-1993 MARINER 115 HP
1990-1993 MARINER 135 HP
1990-1993 MARINER 15 HP
1990-1993 MARINER 150 HP
1990-1993 MARINER 150 MAGNUM EFI
1990-1993 MARINER 150 MAGNUM II
1990-1993 MARINER 150 MAGNUM III
1990-1993 MARINER 175 HP
1990-1993 MARINER 175 MAGNUM EFI
1990-1993 MARINER 2.5 HP
1990-1993 MARINER 20 HP
1990-1993 MARINER 200 HP
1990-1993 MARINER 200 MAGNUM EFI
1990-1993 MARINER 25 HP
1990-1993 MARINER 250 HP
1990-1993 MARINER 275 HP
1990-1993 MARINER 3.3 HP
1990-1993 MARINER 4 HP
1990-1993 MARINER 40 HP
1990-1993 MARINER 5 HP
1990-1993 MARINER 50 HP
1990-1993 MARINER 60 HP
1990-1993 MARINER 75 HP
1990-1993 MARINER 8 HP
1990-1993 MARINER 9.9 HP
1990-1993 MARINER 90 HP