2003 Yamaha Marine Outboard Motor 9.9V, 15V Service Manual

Details systems including engine, fuel, and electrical for your Yamaha 9.9V and 15V outboards. Features diagrams and part numbers for efficient repairs. L-18616-01-03.

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Document Details

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Document Number / Seller:
27491 / Laura Scott
File Size:
234.79 MB
File Type:
ZIP
Language:
English
Printable:
Yes
Category:
Outboard Motor
Last updated / verified
Sep 14, 2025

Models Covered & Key Technical Specifications

Yamaha 9.9V, 15V (LIT-18616-01-03) Outboard Motor Manual: 2003 edition Standards-Vault

2003 Yamaha Marine Outboard Motors | 9.9V / 15V Section.

  • Engine Specs: 2 cylinder displacement of 246 cm³ establishes the core engine architecture.
  • Performance Data: 5000 - 5500 r/min defines the full throttle operating range.
  • Starting System: Manual and Electric configurations are available for reliable operation.
  • Charging System: EMH (EH) and EMHR (ER) provide essential power outputs.
  • Fuel System: Pre-Mixed Fuel & Oil ensures proper fuel delivery.
  • Gear Ratio: 2.08 (27/13) signifies the gear reduction performance.

Professional Workshop Service Manual & Technical Specifications

Yamaha 9.9V, 15V (LIT-18616-01-03) Outboard Motor Manual: 2003 edition Standards-Vault

Architecture-Focus: 2003 Yamaha Marine Outboard Motors // Validation-Data: Outboard Motor / Power Unit Logic // Architecture-Focus: Service Manual.

Specification Rating Validation-Data
Over-all Length 936 mm (36.9 in) 1040 mm (40.9 in)
Over-all Width 358 mm (14.1 in) 450.9 mm (17.75 in)
Over-all Height 1195 mm (47.0 in) 1309 mm (51.5 in)
Weight (Al.) 48 kg (105.8 lb) 50.5 kg (111.3 lb)
Full Throttle Operating Range 5000 – 5,500 r/min 4500 – 5500 r/min
Max. Fuel Consumption 12 (2.91, 2.42) @ 5,500 L (US gal, Imp gal/h) at r/min 12 (2.91, 2.42) @ 5,500 L (US gal, Imp gal/h) at r/min

Organized into dedicated modules for quick reference, this manual provides an overview of the systems and procedures critical to maintaining your Yamaha 9.9V and 15V outboard motors. It includes essential specifications and diagrams for accurate identification and service.

Factory specifications are documented for

Detailed specifications for dimensions, weights, and performance metrics are outlined, ensuring you have the precise data needed for any service task. The manual covers general specifications, maintenance specifics for the engine, lower unit, and electrical components, along with critical tightening torque values.

Engine rebuild procedures are documented for

This document details procedures for engine overhaul, including cylinder head, crankshaft, and piston servicing. It references specific diagrams and torque settings to guide the reassembly process.

Drivetrain specifications are addressed in

Information regarding the lower unit, including gear shift position, gear ratios, and propeller specifications, is thoroughly covered. This ensures proper assembly and function of the drivetrain components.

Reassembly procedures are specified for

Guidance on the reassembly of various motor sections, such as the power unit, recoil starter, and electrical components, is provided. The proper diagram and part sequencing are highlighted for correct assembly.

Service intervals are documented for

The manual includes a comprehensive maintenance interval chart, detailing the recommended service for various components based on operating hours. This proactive approach ensures longevity and optimal performance.

...documents torque specifications for engine components, such as crankshaft and cylinder head, to ensure proper mating surface contact.

FAQ

Reference the **specified** tool requirements keyboard_arrow_down

YB-06029/90890-06704 is the digital caliper required for measuring thickness, used in conjunction with the shimming process.

What are the **essential** electrical values keyboard_arrow_down

115 V at 1500 r/min is the rectifier regulator output for the electrical model, crucial for charging system analysis.

Specify the **correct** calibration settings keyboard_arrow_down

5000-5500 r/min is the full throttle operating range for the 20DM and 20MH models, important for performance checks documented on page 85.

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The service manual is comprehensive and easy to follow. I had a smooth download process, and the support team was very responsive when I had questions. Highly recommend!