1990 Johnson Outboards 9.9 HP - 30 HP Models Service and Repair Manual P/N 507871

Introduction to the Service Manual

This document provides an overview of the 1990 Johnson Outboards 9.9 HP - 30 HP Models Service Shop Repair Manual P/N 507871. This manual is an essential resource for owners and technicians performing maintenance, service, and repair procedures on Johnson and Evinrude outboard motors manufactured in 1990, specifically covering models ranging from 9.9 horsepower to 30 horsepower.

Published by Outboard Marine Corporation (OMC), this manual contains the same detailed information utilized by authorized OMC mechanics and technicians. Its purpose is to guide users through various service operations with clarity and precision.

Manual Content Overview

The service manual is structured to provide comprehensive guidance on all aspects of outboard motor service. Key areas covered include:

Step-by-Step Instructions: Detailed procedures for disassembly, inspection, repair, and reassembly of various components.
Exploded Illustrations and Diagrams: Visual representations of parts and assemblies, aiding in identification and correct placement.
Troubleshooting Guides: Systematic approaches to diagnose and resolve common operational issues.
Maintenance Schedules: Recommended intervals and procedures for routine upkeep to ensure optimal performance and longevity.
Technical Specifications: Critical data such as torque values, clearances, and fluid capacities.
Wiring Diagrams: Electrical system schematics for diagnosing electrical faults.

This manual is designed to empower users with the knowledge required to perform repairs and maintenance effectively, potentially reducing the need for professional service and associated costs.

Using the Service Manual Effectively

To maximize the utility of this service manual, consider the following guidelines:

Identify Your Model: Ensure your outboard motor falls within the 9.9 HP to 30 HP range for 1990 Johnson or Evinrude models.
Review Safety Information: Always read and understand all safety warnings and precautions before beginning any service procedure.
Follow Procedures Sequentially: Adhere to the step-by-step instructions in the order presented to avoid errors.
Consult Diagrams: Utilize the exploded views and diagrams to visualize component relationships and proper assembly.
Refer to Specifications: Use the provided technical specifications for correct adjustments and torque settings.

Proper use of this manual contributes to safe and successful service outcomes for your outboard motor.

Product Image

Cover of the 1990 Johnson Outboards Service Manual P/N 507871

Image: Front cover of the 1990 Johnson Outboards Service Manual, featuring the Johnson Outboards logo, "Service Manual 9.9 THRU 30 MODELS" text, and an illustration of an outboard motor. The OMC logo is visible at the top left and bottom left.

Publisher Information

This service manual was originally published by Outboard Marine Corporation (OMC), the manufacturer of Johnson and Evinrude outboard motors. The publication date is January 1, 1990. The manual's Part Number (P/N) is 507871.

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Johnson 9.9 HP - 30 HP Outboard Models (P/N 507871)