Mercury 135 150 175 200 HP Outboard Service Manual 90-878079R01 PDF

Description

Mercury 135 150 175 200 HP Outboard Service Manual 90-878079R01 PDF is a complete service manual for Mercury Marine V-6 outboard engines. It covers 135, 150, 175, and 200 HP models, including EFI, XRI, XR6, and MAG III variants. This Mercury 135 150 175 200 HP outboard service manual gives technicians the procedures, specifications, and diagrams needed to service, troubleshoot, and repair these outboards.

File Details

• Manual type: Service Manual
• Brand: Mercury Marine
• Models: 135, 150, 175, 200 HP outboards
• Engine family: V-6, 2-cycle, loop charged; 2.0 Liter and 2.5 Liter
• Serial coverage: 0G960500 and Above; EFI Models 0G960500 thru 0T408999
• Publication number: 90-878079R01
• Date: August 2002
• Language: English
• Page count: 654
• File format: PDF

Models Covered

• 135 HP
• 150 HP
• 175 HP
• 200 HP
• 150 XRI
• 175 XRI
• 200 XRI
• XR6
• MAG III
• EFI models

Chapters Covered

• Section 1 – General Information and Specifications: Specifications, Maintenance, General Information, Outboard Installation
• Section 2 – Electrical: Ignition, Charging and Starting System, Timing, Synchronizing and Adjusting, Wiring Diagrams
• Section 3 – Fuel System: Fuel Pump, Carburetion, Fuel Injection, Oil Injection, Emissions
• Section 4 – Powerhead: Powerhead, Cooling
• Section 5 – Mid-Section: Clamp/Swivel Brackets and Drive Shaft Housing, Power Trim
• Section 6 – Gear Housing: Right Hand Non-Ratcheting, Left Hand Non-Ratcheting
• Section 7 – Attachments/Control Linkage
• Section 8 – Color Diagrams

This Mercury 135 150 175 200 HP service manual is organized by system so a mechanic can move from general specifications into ignition, charging, fuel delivery, powerhead, midsection, gear housing, and control linkage work. It includes exploded views, wiring diagrams, flow charts, torque values, service limits, and step-by-step removal and installation sequences.

Engine and Model Coverage

The manual covers Mercury V-6 two-cycle loop-charged outboards in 2.0 Liter and 2.5 Liter displacements. Specific model families include 135 HP, 150 HP, 175 HP, 200 HP, 150 XRI, 175 XRI, 200 XRI, XR6, and MAG III. Serial number coverage starts at 0G960500 and above, with EFI models listed from 0G960500 through 0T408999. Carburetor and EFI fuel systems are both addressed, along with oil injection and emissions information.

Electrical System

Electrical coverage includes capacitor discharge ignition with CDM modules, stator, trigger assembly, flywheel, control module, charging system, starting system, voltage regulators, battery cables, and wiring diagrams. Troubleshooting flow charts are provided for no-spark conditions, CDM stop diode faults, stator output tests, trigger input tests, bias circuits, idle stabilizer, rev-limit circuit, and EFI injector timing signals.

Fuel System

The fuel system section covers pulse fuel pumps, carburetor circuits, jet placement, float adjustment, synchronization, EFI fuel management, vapor separator, electric fuel pump, fuel rail, injectors, pressure regulator, water separating filter, and oil injection. The manual includes fuel pressure specifications, vacuum test procedures, injector electrical tests, detonation control system tests, and component removal and installation steps.

Powerhead and Cooling

Powerhead service includes removal from the driveshaft housing, complete disassembly, cleaning and inspection, cylinder bore measurement, piston and ring service, crankshaft and connecting rod inspection, reed block service, crankcase cover installation, torque sequences, and reassembly. Cooling coverage includes water flow description, thermostats, poppet valve, water pump, pressure checks, and overheating diagnosis.

Mid-Section, Gear Housing, and Controls

Mid-section coverage includes swivel bracket, steering arm, transom brackets, driveshaft housing, exhaust tube, dyna-float suspension, and power trim. Gear housing sections cover right-hand and left-hand non-ratcheting designs, including driveshaft, pinion gear, forward gear, reverse gear, bearing carrier, propeller shaft, shimming, backlash measurement, and water pump installation. Attachment and control linkage instructions cover steering cables, link rods, dual outboard routing, and trim tab adjustment.

Systems and Procedures Covered

• Capacitor discharge ignition (CDM) theory, testing, and component replacement
• Stator, trigger, flywheel, control module, and CDM service
• Charging system, voltage regulator, battery, and starting system diagnostics
• Timing, synchronization, throttle position sensor, and oil pump adjustment
• Fuel pump, carburetor, EFI, vapor separator, fuel rail, injector, and pressure regulator service
• Oil injection system setup, bleeding, pump volume testing, and troubleshooting
• Powerhead removal, disassembly, cleaning, inspection, reassembly, and installation
• Cylinder block, crankshaft, pistons, connecting rods, reed block, and cylinder head service
• Cooling system, thermostat, water pump, poppet valve, and water flow diagnosis
• Mid-section, swivel bracket, transom bracket, driveshaft housing, and power trim repair
• Right-hand and left-hand non-ratcheting gear housing disassembly, shimming, and reassembly
• Steering cable, control linkage, and attachment installation

Why This Mercury Service Manual Is Useful

Working on a V-6 two-stroke outboard without the correct service data can lead to incorrect assembly, damaged components, or repeat failures. This Mercury 135 150 175 200 HP outboard service manual provides the model-specific specifications and step-by-step procedures needed for accurate repairs, including gear housing shimming, pinion depth, forward and reverse gear backlash, ignition troubleshooting, fuel injection testing, and powerhead torque sequences.

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This Mercury 135 150 175 200 HP outboard service manual 90-878079R01 is delivered as an instant PDF download after purchase. There is no shipping wait and no physical book to handle. You can view it on a computer, tablet, or smartphone, print only the pages you need for the job, and keep the manual on hand for future maintenance and repairs.