1990 Yamaha CV115E 115 HP Outboard Service Manual
Covers CV115E models with procedures for engine, electrical systems, fuel system, power unit, lower unit, and more. P/N LIT-18616-01-40.
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Sample pages from the 1990 Yamaha CV115E 115 HP Outboard Service Manual manual
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Yamaha Models Covered & Key Technical Specifications
Models: CV115E
Sub-models / Variants: Long shaft (L), Ultra long shaft (UL)
Trade Names: Yamaha Marine Outboards
Build Years: 1990
Serial Numbers: 320363~
Technical Data:
- Engine displacement: 1,730 cc (105.57 cu. in)
- Horsepower: 115 HP at 5,500 rpm
- Engine type: 2-stroke, 4-cylinder
- Compression ratio: 5.7
- Fuel system: 2 carburetors, choke starting
- Cooling system: Water
- Ignition system: C.D.I. (Capacitor Discharge Ignition)
- Reduction gear ratio: 2.0 (13/26)
- Propeller drive: Spline
- Electrical fuse rating: 20 A
Yamaha Manual Features & Content Preview
Yamaha CV115E 1990 Outboard Technical Scope
- Covers the 1990 Yamaha CV115E 115 HP outboard, featuring detailed technical breakdowns for the 1,730 cc 2-stroke power unit and related marine hardware
- Original OEM publication P/N LIT-18616-00-56, 1st edition April 1990
- Contains 8 detailed exploded-view assembly diagrams with torque specifications and 14 maintenance specification tables
- Delivered as a direct download the moment payment clears
- OCR text layer lets you jump to a torque spec by keyword
- This 1990 1st edition remains the official factory reference for the CV115E unit, specifically documenting the 320363~ serial range and the unique loop-charge scavenging system
Component and Service Walkthrough
The 1990 Yamaha CV115E service manual outlines mechanical concepts and structural details for the 115 HP 2-stroke outboard series. The document explores general information, technical identification, and safety guidelines for handling marine service fluids and industrial hygiene. Procedural sections focus on power unit assembly, fuel system integration, and lower unit gear train configurations.
Additional chapters examine bracket unit mechanics and trim-tilt hydraulic systems, documenting pressure testing and fluid bleed protocols. Electrical system sections provide diagnostic reference values for ignition timing, pulser coil resistance, and starter motor output. You can find more information on what an OEM service publication covers to assist in your technical review.
Specification Highlights and Reference Values
Engine block tolerances for the 1990 Yamaha CV115E are listed with a maximum taper limit of 0.08 mm. Cylinder head warpage limits are documented at 0.10 mm in the engine specification tables. Piston ring end-gap specs for the 115 HP model are specified at 0.30–0.40 mm for standard fitment.
Crankcase bolt torque values are documented in two stages, reaching 40 Nm (29 ft-lb) in the final tightening phase. Gear case pressure test standards are specified at 1.0 kgf/sq.cm (1.020 bar) for a duration of 10 seconds. The rectifier unit pinout and electrical continuity charts support diagnostic tasks for the charging and ignition systems.
Reference only — always consult a certified technician before performing service on this equipment.
An official 1990 Yamaha OEM workshop manual covering the 115 HP CV115E outboard, documenting engine, chassis, electrical, and fuel-delivery specifications for the 320363~ serial number range.
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