Yamaha CV25 Outboard Motor Service Manual

1990 Yamaha Marine CV25 Service Manual for outboard motors. Includes pre-delivery, periodic maintenance, fuel system, power unit, and electrical system procedures. LIT-18616-00-55.

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Document Details

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Document Number / Seller:
28640 / Patrick Williams
File Size:
164.10 MB
File Type:
ZIP
Language:
English
Printable:
Yes
Category:
Outboard Motor
Last updated / verified
Aug 28, 2025

Models Covered & Key Technical Specifications

Yamaha Outboard Motor Service Manual: CV25 Yamaha CV25 (LIT-18616-00-55) -- 1990 Service Data & Component Directory | Specification Compendium. Toolkit.

  • Certified Travel Rate: 4,500-5,500 r/min establishes the full throttle operational speed Matrix.
  • Designated Footprint Data: For general use, 160 kg (352 lb) defines the maximum weight Standards.
  • Defined Scan Resolution: The engine type is two-stroke -- signifying the combustion cycle Architecture.
  • Key Power Rating: The average maximum power output is 18.7 (25)/5,000 KW (HP) at r/min Protocol.
  • Primary Velocity Specs: Maximum fuel consumption reaches 12.0 (3.17, 2.64) I (US gal, imp gal)/h Parameters.
  • Baseline Torque Specs: For proper assembly, the crankcase requires 100 Nm (73.7 ft-lb) to achieve secure mounting Norms.

Manual Description & Preview

Yamaha CV25 Outboard Motor Service Manual: CV25 Service Manual for Yamaha Marine CV25 outboard Procedure-Database

Product-Line: CV25 // Maintenance-Category: Outboard Motor / CV25 Logic // Product-Line: Service Manual.

Technical Specifications

Component Operational-Logic Architecture
Overall Length 600 mm (in.) 23.6
Overall Width 360 mm (in.) 14.2
Overall Height 1,232 mm (in.) 48.5
Boat Transom Height 501 mm (in.) 19.7
Weight 51 kg (lb.) 112.4
Maximum Output 18.7 (25)/5,000 KW (HP) at r/min 18.7 (25)/5,000
Average Maximum Power I (US gal, imp gal)/h 12.0 (3.17, 2.64) /5,500
Engine Type Two-stroke 2
Spark Plug B7HS (NGK) NGK (10mm)

Table of Contents Summary

  • General Information
  • Electrical System
  • Lower Unit
  • Power Unit
  • Fuel System

Methodically requiring a structured approach, this manual details critical maintenance procedures for the Yamaha CV25 outboard motor. It outlines system operations, including the fuel system, power unit, and electrical components, providing essential information for mechanics and owners alike. The documentation addresses component wear limits and includes torque specifications for critical assembly points to ensure pivot-point integrity.

Disassembly instructions are documented for key components of the power and lower units.

Wear limits are specified for critical engine parts such as piston rings and cylinder bores.

System operation descriptions cover the fuel delivery, ignition, and starting systems.

The documentation addresses the proper function of the electrical system, including the starter motor and charging system.

Assembly instructions are detailed for the power unit and lower unit, ensuring correct reassembly of all components.

...documents torque specifications for critical engine components to ensure proper pivot-point integrity.

FAQ

Which chapters contain exploded diagrams and assembly overviews for the Yamaha CV25 power unit and lower unit systems? keyboard_arrow_down

Manual includes dedicated chapters that provide exploded diagrams, component lists, and assembly references for both the power unit and lower unit subassemblies.

Are the electrical system sections equipped with wiring diagrams and component location references for the CV25ED and CV25EMD models? keyboard_arrow_down

Yes, the electrical system chapter contains wiring diagram references tailored to these specific outboard models. It also lists technical data for components such as the starter motor, charging coils, and ignition system.

Is this manual provided in a digital PDF format that allows for permanent storage on personal devices? keyboard_arrow_down

Product is delivered as an instant digital download in PDF format. It is designed to be accessible on multiple devices and remains available for your use after the download is complete. The document is provided in English to match the original technical publication.

What publication information is displayed on the document cover page? keyboard_arrow_down

Cover displays the publication number LIT-18616-00-55 and identifies the document as the official first edition service manual released in April 1990.

Does the specification section list fluid capacities and lubricant charts for the outboard motor? keyboard_arrow_down

Maintenance and general specification tables list required fluid types and capacities for the fuel system and gear case. These sections provide reference data for lubricant selection and mixing ratios.

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