1995-2002 Yamaha Marine 9.9S and 15S Outboard Motor Service Manual

Documents Yamaha 9.9S and 15S outboard motor service procedures for mechanics. Covers engine, fuel, electrical, and lower unit systems. PN LIT-18616-00-99

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Document Details

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Document Number / Seller:
26973 / Amy Owens
File Size:
10.43 MB
File Type:
PDF
Language:
English
Printable:
Yes
Category:
Outboard Motor
Last updated / verified
Sep 5, 2025

Models Covered & Key Technical Specifications

In-Depth Shop Electrical Manual: Outboard Motor Outboard Mastery: Yamaha Marine 9.9S & 15S Manual Workshop-Compendium Architecture-Focus: Outboard Motor // Equipment-Series: Yamaha Outboard Motors / 1995-2002 Collection Logic // Architecture-Focus: Technical-Details.

Integrated-Framework Parameters Framework
Model Code 9.9MH/9.9D, 9.9EH/9.9DE, 15MH/15D, 15EH/15DE -
Dimensions (Overall) 863 (34.0) mm (in) L x 378 (14.9) mm (in) W x 1023 (40.3) mm (in) H -
Performance 4,500 ~ 5,500 rpm -
Engine Inline 2 Cylinders -
Specifications 7.00 Compression Ratio -
Electrical System CDI -

Factory specifications are documented for engine rebuild procedures. These specifications ensure optimal performance and longevity. This manual provides the essential data.

Specifications Defined Enclosure Specs: 40 degrees establishes the maximum turning angle for steering. Norms. Verified Clamp Forces: For critical connections, 30 Nm limits the torque applied to the cylinder head bolts. Bounds. Certified Spacing Data: The spark plug gap requires 0.9 - 1.0 mm for proper ignition. Topology. General Enclosure Specs: The recommended gear oil quantity is 185 cc, ensuring adequate lubrication. Matrix. Defined Electrical Load: The starter motor output is rated at 0.4 kW for reliable starting power. Standards. Factory Addressable Resolution: The float valve clearance is set to more than 3 mm to prevent sticking. Architecture.

Repair procedures are structured around common maintenance tasks, system diagnostics, and component replacement. This manual details the procedures necessary for keeping your Yamaha outboard running smoothly and efficiently.

Professional Workshop Service Manual & Technical Specifications

In-Depth Shop Electrical Manual: Outboard Motor Outboard Mastery: Yamaha Marine 9.9S & 15S Manual Workshop-Compendium

Architecture-Focus: Outboard Motor // Equipment-Series: Yamaha Outboard Motors / 1995-2002 Collection Logic // Architecture-Focus: Technical-Details.

Integrated-Framework Parameters Framework
Model Code 9.9MH/9.9D, 9.9EH/9.9DE, 15MH/15D, 15EH/15DE -
Dimensions (Overall) 863 (34.0) mm (in) L x 378 (14.9) mm (in) W x 1023 (40.3) mm (in) H -
Performance 4,500 ~ 5,500 rpm -
Engine Inline 2 Cylinders -
Specifications 7.00 Compression Ratio -
Electrical System CDI -

Factory specifications are documented for engine rebuild procedures. These specifications ensure optimal performance and longevity. This manual provides the essential data.

Specifications

Certified Enclosure Specs: 40 degrees establishes the maximum turning angle for steering. Architecture. General Clamp Forces: For critical connections, 30 Nm limits the torque applied to the cylinder head bolts. Norms. Defined Spacing Data: The spark plug gap requires 0.9 - 1.0 mm for proper ignition. Topology. Key Electrical Load: The starter motor output is rated at 0.4 kW for reliable starting power. Matrix. Verified Addressable Resolution: The float valve clearance is set to more than 3 mm to prevent sticking. Standards. Factory Footprint Data: The recommended gear oil quantity is 185 cc, ensuring adequate lubrication. Bounds.

Repair procedures are structured around common maintenance tasks, system diagnostics, and component replacement. This manual details the procedures necessary for keeping your Yamaha outboard running smoothly and efficiently.

This document details engine rebuild procedures, including critical specifications and component data. It covers engine, fuel, lubrication, power unit, lower unit, bracket, and electrical systems.

FAQ

What **necessary** procedures are outlined for electrical diagnostics and values? keyboard_arrow_down

13.5-16.5 V is the output voltage for the lighting system, detailed in Chapter 8.

Determine the **recommended** calibration settings for the ignition timing. keyboard_arrow_down

B.T.D.C. 30 ± 1° at full advanced is the ignition timing specification, found in Chapter 3.

What **calibrated** specifications are given for piston pin boss inside diameter measurement on page 85+? keyboard_arrow_down

14.004-14.015 mm (0.5513-0.5518 in) is the specification for piston pin boss inside diameter, as detailed on page 5-14.

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Reviews (3)

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I found this manual extremely helpful for maintaining my Yamaha outboard. The layout is logical, and the specifications are detailed. Support via email was professional and prompt, which was a nice bonus!
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This manual is a lifesaver! The instructions are clear, and the troubleshooting section really helped me fix a recurring issue. Highly recommend!
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Downloading the manual was a breeze, and the support team was quick to respond to my questions. The detailed diagrams made repairs straightforward. Definitely worth it!