Yamaha CV25 Outboard Motor Service Manual • P/N LIT-18616-00-55, edition April 1990

1990 Yamaha CV25 Outboard Motor Service Documentation

• Covers the 1990 Yamaha CV25 outboard, including the CV25ED remote control and CV25EMD manual control variants.
• Official Yamaha publication P/N LIT-18616-00-55 (first edition, April 1990).
• Contains 8 exploded-view system diagrams, 15 maintenance specification tables, and 3 distinct wiring schematic illustrations.
• Available as an instant download right after checkout. The indexed PDF is fully searchable and stored in your account for easy retrieval anytime.
• Provides the baseline assembly and service tolerances established for the original production run.

System Overviews and Workshop Utility

Navigating this reference material gives technicians and DIY mechanics a complete breakdown of the outboard's primary systems. It begins with comprehensive general information, identification protocols, and lists of required special service tools. Subsequent technical sections detail the fuel delivery assembly, power unit overhauls, lower unit transmission, and gear case geometry. Electrical system coverage is equally extensive. You will find ignition timing data, component resistance tables, and specific wiring paths for both the electric and manual start setups. Reviewing these factory parameters before beginning a tear-down ensures safe workshop practices and prevents costly component damage.

Engine and Maintenance Specifications

Technical depth for this series includes precise tolerance data for piston-to-cylinder clearances and crankcase assembly. The cylinder head warpage limit, for instance, is strictly documented at 0.1 mm in the power unit maintenance tables. Final mounting procedures require a 100 Nm (73.7 ft-lb) torque for the crankcase assembly. The flywheel nut tightening torque shares this exact 100 Nm specification. Having these detailed engine, fuel, and electrical measurements readily available speeds up component verification and eliminates guesswork on the bench.