Mercury MerCruiser 8.1S HO Manuals

Manuals and User Guides for Mercury MerCruiser 8.1S HO. We have 1 Mercury MerCruiser 8.1S HO manual available for free PDF download: Product Applications Manual

Mercury MerCruiser 8.1S HO Product Applications Manual

Mercury MerCruiser 8.1S HO Product Applications Manual (163 pages)

Gasoline Inboard Models

Brand: Mercury | Category: Engine | Size: 14.13 MB

Table of Contents

Important Information 1

6
Transmission and Drive Line 2

20
- General Information
  21
- Propeller Shaft Log Seal Connections
  23
- Transmissions
  25
  - Gear Ratios
    25
  - Model Offerings and Identification
    26
  - Propeller Rotation
    29
Engine

31
- General Information
  32
  - Engine Rotation
    32
  - Special Tools
    32
  - Engine Lifting Provisions
    33
  - Engine Oil Dipstick Relocation
    33
- Clearance
  34
- Engine Bed Requirements
  34
- Engine Compartment Construction
  34
  - Engine Compartment Ventilation
    34
- Engine Compartment Seams
  34
- Serviceability
  35
- Engine Alignment
  48
- ZF Marine Transmissions-DTS
  51
- Remote Control and Shift Cable
  52
Air Intake System

54
- Engine Compartment Ventilation
  55
- Engine Compartment and Fuel System Pressure and Temperature Test
  56
  - Connections
    56
- Heat Soak Test
  57
- Running Test
  57
- Interpreting Results
  58
Fuel Delivery System

60
- Fuel Delivery System
  61
- Fuel Tank
  62
- Anti-Siphon Valve
  63
- Fuel Inlet Connection
  64
  - Inline Fuel Filter
    66
  - Special Fitting Installation Procedure
    67
- Fuel Lines and Fittings
  64
- Cool Fuel Insulator Covers
  68
Exhaust System

70
- Exhaust System
  71
  - Important Information
    71
  - Carbon Monoxide Poisoning
    71
  - Exhaust Connections
    72
  - Exhaust Through-Hull Fittings
    74
  - Exhaust Resonators
    74
- Exhaust System Design
  76
- Measuring Exhaust Elbow Height
  84
- Testing the Exhaust System
  93
Cooling System

98
- General Information
  99
- Seawater Supply System
  100
  - Specifications
    100
  - Seawater Inlet Hose
    101
  - Through-Hull Seawater Pickup System
    102
  - Seawater Pickup
    102
  - Seacock
    104
  - Sea Strainer
    105
- Seawater Supply Test
  105
  - Seawater Inlet Restriction Test
    105
  - Seawater Pressure Test for MPI Models
    106
  - Seawater Aeration Test
    106
- Closed Cooling
  107
  - Description
    107
  - Antifreeze Recommendations
    107
  - Coolant Recovery System
    108
- Water Heaters
  109
  - Water Heater Hose Connection Points
    110
- 5.7L Tow Sport Water Flow Diagram
  114
  - Inboard and Tow Sport (Carburetor) Water Flow Diagram
    114
- Inboard V8 Water Flow Diagrams
  115
  - Mie Water Flow Diagrams
    115
- 8.1S and HO Inboard Water Flow Diagram
  118
  - Coolant and Water Flow Diagrams
    118
Electrical System

120
- Finding Other Diagrams
  121
- General Information
  121
- Precautions
  121
- Industry Standards and Regulations
  122
- Battery and Battery Cables Requirements
  123
  - Battery
    123
  - Battery Cables
    124
  - Battery Cable Connections
    125
- Electrical Connections
  127
  - Smartcraft Product
    127
  - Engine Harness
    127
  - Audio Warning System
    129
- Multiple EFI Engine Battery Precautions
  129
  - Situation
    129
  - Recommendations
    130
- Battery Switch
  130
- Battery Isolator
  131
  - Battery Isolator Diagram
    132
Instrumentation and Controls

134
- Important Installation Information
  135
- Instrumentation
  135
- Requirements and Recommendations
  135
- Accessory Connections
  136
- Dual Station Instrumentation
  136
- Audio Warning System
  137
- Engine Guardian
  138
- Lanyard Stop Switch Information
  139
- Instrumentation Harness Receptacle
  140
- 10-Pin Instrument Harness
  142
- 10-Pin Instrument Harness Dual Station
  143
- 14-Pin Instrument Harness
  144
- Remote Control and Cables
  145
- Requirements and Recommendations
  145
- Installation
  146
- Dual Station (Helm) Cable Setup
  147
- Cable Attachment Hardware
  148
- Cable Adjustment
  150
Predelivery Preparation

154
- Operating Engine with the Boat out of the Water
  155
- Predelivery Inspection
  155
- Propeller Selection
  156
  - Selection Procedure
    156
  - Cruising RPM
    158
- How Elevation and Climate Affect Performance
  158
- Extended Storage
  159
- Power Package Preparation for Shipment
  159
- Disconnecting the Battery
  160
- Draining the Cooling System
  160
- Engine Corrosion Protection
  160
- Disconnecting the Propeller Shaft Coupling
  161
- Predelivery Inspection Checklist
  162

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