1995-2006 Yamaha 9.9U, 15U Outboard Motors Service Manual

Field service reference for Yamaha 9.9U and 15U outboard motors (1995-2006). Documents maintenance, repair, and diagnostics for comprehensive engine and systems coverage. PN LIT-18616-01-22

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Document Details

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Document Number / Seller:
30056 / Richard Torres
File Size:
28.09 MB
File Type:
PDF
Language:
English
Printable:
Yes
Category:
Outboard Motor
Last updated / verified
Jun 3, 2025

Models Covered & Key Technical Specifications

Comprehensive Instructional Diagnostic Manual: Yamaha 9.9U, 15U Outboard Motors - Factory Service Manual & Repair Procedures Service-Dossier

Field service reference | Manufacturer Unit.

  • Cooling Specs: The cooling system requires 1500 rpm for optimal operation.
  • Throughput Data: For engine operation, 200 kW represents the maximum power output.
  • Dimensional Limits: The fuel line has a 3 mm diameter.
  • Torque Data: The flywheel nut requires 105 Nm (10.5 kg-m, 7.5 ft-lb) for secure fastening.
  • Containment Volume: The oil capacity is 0.88 Imp qt (1.06 US qt) for proper lubrication.
  • Environmental Range: For optimal performance, -20 to 40 C defines the operating temperature.

Professional Workshop Service Manual & Technical Specifications

Comprehensive Instructional Diagnostic Manual: Yamaha 9.9U, 15U Outboard Motors - Factory Service Manual & Repair Procedures Service-Dossier

Specification-Class: 1995-2006 Yamaha Outboard Motor 9.9U, 15U // Maintenance-Category: Outboard Motor / Engine Logic // Specification-Class: Comprehensive repair and diagnostic data.

Document Overview

Component Value Calibration-Spec
Engine Type 4-stroke OHC *1
Carburetor NGK number CR5HS
Spark Plug 1500 r/min -
Ignition System P.O.N *2 Manual starter
Fuel system SAE 10W-30, 10W-40

Providing a structural breakdown of the systems and procedures documented within this service manual. It details the layout and operational logic for the engine, fuel, and electrical systems, alongside comprehensive repair procedures. This manual serves as an essential guide for technicians and owners alike.

Systems Documentation

This manual covers the complete systems of the Yamaha 9.9U and 15U outboard motors, including the fuel system, ignition system, electrical components, and starting system. Each system's layout, function, and interdependencies are thoroughly explained.

Procedure Documentation

Reference data is included for all major repair and maintenance procedures. This includes detailed steps for disassembly, reassembly, inspection, and adjustment of critical components like the carburetor, power unit, and lower unit.

Introduction to Manual

This manual covers the fundamental aspects of servicing the Yamaha 9.9U/15U models. It includes general information, specifications, and a maintenance schedule designed to keep the motor in optimal condition.

Specifications Table

(See table above)

Diagnostic Procedures

Diagnostic procedures are covered for common issues and troubleshooting. The manual provides systematic approaches to identifying and resolving problems, helping to minimize downtime.

This manual documents torque specifications for critical engine components to ensure proper component alignment retention.

FAQ

What **essential** testing parameters are covered for CDI unit output? keyboard_arrow_down

170 V at cranking and 215 V at 1500 r/min are the specified parameters for CDI unit output testing.

Check the **correct** diagnostic procedures for engine stalling. keyboard_arrow_down

Engine stalling is addressed in the TROUBLE-ANALYSIS section, referencing the fuel system, power unit, and electrical system chapters for specific diagnostic steps.

What does the **documented** fluid capacity requirements state for the gear oil? keyboard_arrow_down

T9.9/F9.9A: 320 cm³ (10.82 us qt, 0.88 Imp qt) and F8B, F9.9/F9.9B: 185 cm³ (6.25 us qt, 6.51 Imp oz) are the documented gear oil capacities.

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