1996-2010 Mercury Mariner 8hp, 9.9hp Outboard Motor Service Manual

Technical reference spanning Mercury Mariner 8hp, 9.9hp outboards from 1996-2010, covering specifications, maintenance procedures, and troubleshooting. Part number 90-827857R1.

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Document Details

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Document Number / Seller:
26857 / Mark Martin
File Size:
5.82 MB
File Type:
ZIP
Language:
English
Printable:
Yes
Category:
Outboard Motor
Last updated / verified
Feb 26, 2025

Models Covered & Key Technical Specifications

Mercury Mariner 8hp, 9.9hp Outboard Motor Service Manual: 1996-2010 Mercury Mariner 8hp, 9.9hp Outboards (90-827857R1) — 1996-2010

  • Nominal Liquid Volume: 1.0 Liter (1.0 US Quart) capacity defines the engine oil requirement Framework.
  • Principal Ignition Timing: For optimal operation, 5° ± 1° BTDC signifies the base timing setting Threshold.
  • Rated Specific Gravity: For a fully charged battery, 1.270 is the specified electrolyte concentration Benchmark.
  • Technical Spark Plug Gap: The ignition system requires a 0.024 - 0.028 in. gap for proper spark delivery Configuration.
  • Standard Fuel Pressure: 3-6 PSI defines the required fuel delivery pressure Range.
  • Design Water Pressure: For engine cooling, 5-7 PSI at W.O.T. ensures adequate water circulation Requirements.

Professional Workshop Service Manual & Technical Specifications

Mercury Mariner 8hp, 9.9hp Outboard Motor Service Manual: 1996-2010

Documentation-Type: Service Manual // Year-Coverage: 1996-2010 // System: Outboard Motor Logic

Specifications

Performance-Element Operational-Logic Calibration-Data
Idle RPM 950 ± 50 RPM Carburetor
Trolling RPM 850 ± 50 Carburetor
WOT RPM 5000 - 5500 Carburetor
Spark Plug Gap 0.024 - 0.028 in. Ignition System
Gear Ratio 2.00:1 Gear Housing
Oil Capacity 1 Quart (1 Liter) Lubrication System

Table of Contents Summary

The documentation provides guidance on:

  • Ignition System Components
  • Gear Case Lubrication
  • Carburetor Adjustments
  • Water Pump, Drive Shaft and Shift Shaft
  • Crankshaft, Pistons And Connecting Rods

Detailed Procedures

This manual documents procedures for various systems, including the ignition, fuel, and powerhead. It details disassembly and reassembly steps for components like the carburetor, fuel pump, and cylinder head. Specifications for key elements such as valve clearances and timing belts are provided.

This manual documents torque specifications for various components, including the cylinder head bolts, to ensure proper gasket seal integrity.

FAQ

Identify the **correct** service interval parameters for routine maintenance? keyboard_arrow_down

Every 100 Hours of Use or Once yearly is the recommended service interval for lubricating all lubrication points, changing engine oil, and inspecting spark plugs.

What procedures are **documented** for carburetor system architecture? keyboard_arrow_down

Carburetor procedures documented include float level adjustment, pilot mixture screw adjustment, and carburetor disassembly and inspection.

Determine the **precise** tool requirements for replacing a valve guide? keyboard_arrow_down

Valve guide replacement requires a Valve Guide Remover (91-809495A1), a Valve Guide Installer Bushing (91-809496A1), and a Valve Guide Reamer (91-809497A1).

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Reviews (4)

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The maintenance schedule and troubleshooting guides are incredibly helpful. Plus, the download process was smooth and quick!
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Rated 4 out of 5 stars
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This service manual is a must-have for anyone with a Mercury Mariner. The detailed sections made my repairs much easier!
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I had a small issue with accessing my manual, but the email support was fantastic. They responded quickly and resolved everything!