1985 Yamaha XC125N/NC Riva Service Manual

Get comprehensive service information for the 1985 Yamaha XC125N/NC Riva scooter. This manual covers all aspects of maintenance and repair, including detailed diagrams and specifications. PN LIT-11616-04-16.

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Document Details

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Document Number / Seller:
24699 / Patricia Campbell
File Size:
25.92 MB
File Type:
ZIP
Language:
English
Printable:
Yes
Category:
Scooter
Last updated / verified
Apr 14, 2025

Models Covered & Key Technical Specifications

Yamaha XC125N/NC Riva (LIT-11616-04-16) – 1985 edition Specification-Set Technical guide for Yamaha XC125N/NC Riva scooter. Factory Data: 124 cm3 displacement establishes the engine configuration. Key Specifications: For basic operation, 10.0:1 compression ratio determines the combustion efficiency. Verified Capacity: The standard oil capacity is 1.0 L for routine maintenance. Essential System: The ignition system is full transistor ignition for reliable performance. Approved Tire Size: Tubeless tires are installed, with a front size of 3.50-10-4PR. Designated Cooling: Air cooled, 4-stroke, gasoline, SOHC design ensures efficient operation.

Manual Description & Preview

Yamaha XC125N/NC Riva (LIT-11616-04-16) Manual: Yamaha XC125N/NC Riva 1985 edition Specification-Set

Machine-Range: XC125N/NC Riva // Engineering-Base: Scooter / 4-stroke Logic // Machine-Range: 1985

Procedures Overview

Factory procedures are documented for engine removal, disassembly, and assembly.

Specifications Summary

Key specifications include engine displacement, bore x stroke, compression ratio, and starter system details.

System Documentation

This manual details the ignition system, charging system, lighting system, and signal system components.

Technical Data Table

Component Technical-Path Architecture
Ignition System Full Transistor Ignition Engine Control
Charging System AC Magneto Power Generation
Lighting System Bulb Illumination
Signal System Various Switches Operator Interface

Maintenance Procedures

Maintenance guidelines are included for front and rear wheel service, brake system checks, and steering head adjustments.

FAQ

Check the **standard** spark plug gap keyboard_arrow_down

0.6 to 0.7 mm (0.024-0.028 in) is the specified electrode gap for the spark plug. If out of specification, clean off carbon and regap.

What does the **necessary** valve clearance adjustment procedure involve? keyboard_arrow_down

7 Nm (0.7 m-kg, 5.1 ft-lb) is the tightening torque for the adjuster locknut after rotating the adjuster to obtain the correct valve clearance.

Reference the **recommended** battery specific gravity keyboard_arrow_down

1.280 is the recommended specific gravity for the battery. If it is lower, recharge the battery.

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