1990-1995 Yamaha Moto 4 350 / YFM350ER (A-G) Service Manual

Technical reference spanning Yamaha Moto 4 350 and YFM350ER (A-G) models, detailing engine, transmission, and chassis systems with schematics and procedures. Ref: T-11616-07-51

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Document Details

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Document Number / Seller:
28756 / Brian Wright
File Size:
68.40 MB
File Type:
PDF
Language:
English
Pages:
331
Printable:
Yes
Category:
Motorcycle
Last updated / verified
Sep 3, 2025

Models Covered & Key Technical Specifications

Enhanced Instructional Shop Manual: Yamaha Moto 4 350 / YFM350ER (A-G) Motorcycle Service Manual 1990-1995 Standards-Vault Yamaha Moto 4 / YFM350ER (A-G) (T-11616-07-51) | Motorcycle Suite

  • Designated Climate Specs: For optimal operation, -20-50C is configured at the external operating limit Baseline.
  • Verified Heat Dissipation: The engine requires 15 W to limit excessive thermal load Requirements.
  • Nominal Linear Velocity: For efficient operation, 50 mm/s represents the maximum measured drive speed Threshold.
  • Defined Scan Resolution: The electrical system requires 800 dpi for diagnostic imaging Logic.
  • Key Liquid Volume: The crankcase capacity is measured at 2.5 L Parameters.
  • Essential Generation Capacity: The electrical system produces 12V for standard power output Configuration.

Professional Workshop Service Manual & Technical Specifications

Enhanced Instructional Shop Manual: Yamaha Moto 4 350 / YFM350ER (A-G) Motorcycle Service Manual 1990-1995 Standards-Vault

Coverage-Scope: 1990-1995 Yamaha Moto 4 350 / YFM350ER (A-G) Motorcycle Service Manual // Model-Designation: Yamaha YFM350ER (A-G) / Moto 4 (1987-1995) // Calibration-Scope: T-11616-07-51.

Component Operational-Logic Framework
Engine Air-cooled, SOHC, single-cylinder Configuration
Displacement 349cc (3.268 x 2.539 in) Architecture
Compression Ratio 8.6:1 Standard
Transmission 5-speed, constant mesh Drivetrain
Brakes Front Drum, Rear Disc Braking System
Suspension Front & Rear Swing Arm Ride Control
Electrical System 12V CDI Magneto Ignition System

Organized into dedicated modules for convenient access, this manual offers a thorough overview of the Yamaha Moto 4 350 and YFM350ER (A-G) series. It meticulously documents various systems, including engine overhaul, carburetion, drive train, chassis, and electrical components. Strategic maintenance guidelines are provided for all systems, ensuring longevity and peak performance. The manual details procedures for periodic inspections and adjustments, covering critical areas like valve clearance, cam chain tension, throttle cable free play, and speed limiter settings. Detailed information on spark plug inspection, ignition timing, and compression pressure measurement is included to aid in accurate diagnostics. Troubleshooting guidance is also comprehensively covered, helping to resolve common issues. The document includes torque specifications for component alignment retention to ensure proper assembly. Furthermore, this manual serves as a reference for parts lists and diagrams, facilitating identification and replacement of necessary components.

Installation guidelines are provided for seat, fuel tank, and covers, along with engine mounting and exhaust system components. Proper protocol for handling critical parts like gaskets, oil seals, and O-rings is emphasized throughout.

Maintenance guidelines are included for the engine, chassis, and electrical systems, detailing routine checks and lubrication points. This ensures that all components receive the necessary upkeep for sustained operation.

OEM guidelines are included for various procedures, ensuring that repairs and maintenance are performed to manufacturer standards. This includes specific instructions for brake adjustments and steering system inspections.

Transmission service information covers the middle gear, drive axle, and differential components, providing detailed disassembly and assembly instructions. This ensures the drivetrain is maintained correctly for optimal performance.

HVAC system procedures are included for maintenance and repair. This ensures that the vehicle's environmental control systems are functioning optimally.

FAQ

Determine the **specific** torque specifications for tightening engine mounting bolts. keyboard_arrow_down

40 N·m (4.0 m·kg, 29 ft·lb) is the specified torque for the engine mounting bolts as detailed in the manual's tightening torque chart, found on page 285.

What **designated** safety precautions should be observed when inspecting the battery? keyboard_arrow_down

14 A·h is the standard battery capacity, and precautions include ensuring the battery is charged in a well-ventilated area and avoiding direct contact with electrolyte due to its corrosive nature, as outlined on page 39.

Check the **critical** lubrication requirements for the balancer drive gear. keyboard_arrow_down

Lithium base waterproof wheel bearing grease is the recommended lubricant for the balancer drive gear, as specified on page 57.

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The manual is incredibly detailed and easy to follow. The download process was smooth, and I received the email with the link quickly. Highly recommend for anyone looking to maintain their Yamaha motorcycle!