Yamaha MOTO 4 250 350 ATV Full Service & Repair Manual 1987-1995

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The MOTO 4, available in 250 and 350 variants, represents a significant era in All-Terrain Vehicle (ATV) development, produced from 1987 through 1995. These ATVs were engineered with a focus...

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Taper: Atv

Distributeur:

UGS: 147906

Mots clés: 1987 1988 1989 1990 1991 1992 1993 1994 1995 ATV Featured MOTO 4 250 MOTO 4 350 Moto 4 Models Powersports Yamaha

Variantes de produits

Description

The MOTO 4, available in 250 and 350 variants, represents a significant era in All-Terrain Vehicle (ATV) development, produced from 1987 through 1995. These ATVs were engineered with a focus on torque-rich power delivery, making them highly capable for off-road traction and utility. The legacy in powersports is marked by innovation, and the MOTO 4 series exemplifies this with its robust construction and versatile performance, earning a reputation for durability and reliability within its class. This comprehensive factory service and repair workshop manual provides detailed guidance for the maintenance, troubleshooting, and repair of your MOTO 4. It covers all essential systems, including engine, drivetrain, chassis, suspension, steering, braking, and electrical components. The manual offers step-by-step instructions, advanced diagnostic procedures, detailed troubleshooting charts, and highly detailed exploded diagrams and pictures, ensuring that DIY enthusiasts, independent repair shops, and professional mechanics can effectively maintain and repair these vehicles with factory-level accuracy.

🏷️ Basic Information

Identification

Make:

Yamaha

Model:

MOTO 4

Model Variant:

250 / 350

Model Years Covered:

1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995

Codes

Vehicle Type:

All-Terrain Vehicle (ATV)

👋 Introduction

Market Position

Target Audience:

DIY enthusiasts, independent repair shops, professional mechanics

Competitive Analysis

Value Proposition:

Comprehensive, lifetime access, no hidden fees, factory-level accuracy

Key Features

Instruction Style:

Step-by-step instructions with detailed visuals

Diagram Detail:

Highly detailed exploded diagrams and pictures

📋 Manual Details

Coverage Areas

Manual Scope:

Comprehensive factory service, repair, and troubleshooting

Page Count

Estimated Page Count:

Hundreds (specific number not provided, but described as very detailed)

Manual Type

Manual Classification:

Factory Service and Repair Workshop Manual

Language

Language:

English

Format

Digital Format:

PDF (downloadable)

📖 Manual Coverage

Systems Covered

Engine Systems:

Engine disassembly, assembly, tuning, lubrication, cooling, fuel, ignition, exhaust

Drivetrain Systems:

Transmission, clutch, drive shafts, final drive, differential (if applicable), chain drive maintenance

Chassis Suspension Steering:

Frame, front suspension, rear suspension, steering system, wheel alignment

Braking Systems:

Front and rear brake system inspection, repair, fluid replacement, adjustments

Electrical Systems:

Wiring diagrams, battery, charging system, ignition system, lighting, starting system, instrumentation

Bodywork Plastics:

Body panel removal, installation, fender repair/replacement, seat maintenance

Procedures Included

Routine Maintenance:

Oil changes, filter replacements, spark plug checks, air filter cleaning/replacement, chain lubrication and adjustment

Troubleshooting:

Diagnostic procedures for common and uncommon problems, symptom-based fault finding

Repair Overhaul:

Engine rebuilds, transmission overhauls, suspension component replacement, brake caliper rebuilds

Adjustments:

Carburetor synchronization and tuning, clutch adjustment, brake lever free play adjustment

Special Tools:

Identification and usage of specialized tools required for specific repairs

Technical Depth

Diagnostic Level:

Advanced diagnostics with detailed troubleshooting charts and schematics

Rebuild Capability:

Complete engine and transmission rebuilds with torque specifications and tolerances

Electrical Schematics:

Detailed wiring diagrams for all electrical systems, including component locations

📊 Manual Specifications

File Format

File Type:

Searchability:

Searchable text content (implied by PDF format)

Print Quality

Print Capability:

Printable (single page or entire manual)

Image Quality:

Detailed photos & diagrams (high quality)

Binding Type

Binding:

Not applicable (digital download)

Paper Type

Paper Quality:

Not applicable (digital download)

Licensing

Usage Rights:

Unlimited use on multiple devices, lifetime access

⚙️ Engine Specifications

Primary Engine 250

Engine Type 250:

4-stroke, SOHC, air-cooled

Displacement 250:

246 cc (approx.)

Primary Engine 350

Engine Type 350:

4-stroke, SOHC, air-cooled

Displacement 350:

348 cc (approx.)

Performance

Power Delivery:

Torque-focused for off-road traction and utility

Fuel System

Carburetor Type:

Mikuni (specific model varies by year/model, e.g., VM26 for 250, VM34 for 350)

Fuel Type:

Unleaded gasoline

Lubrication

Oil Type:

Yamaha Yamalube or equivalent motorcycle-specific 4-stroke engine oil (e.g., SAE 20W-40 or 10W-30)

Ignition

Ignition System:

CDI (Capacitor Discharge Ignition)

🔧 Transmission

Standard

Transmission Type:

5-speed constant mesh with automatic clutch (some models may have manual clutch options or variations)

Optional

Reverse Gear:

Yes (standard on most MOTO 4 models)

Features

Drive System:

Shaft drive (some models may have chain drive, confirm specific model)

Final Drive Fluid:

Yamaha Hypoid Gear Oil API GL-4 SAE 80W-90 or equivalent

📐 Dimensions

Exterior

Dimensions:

Varies by model; detailed dimensions provided in manual

Weights

Dry Weight:

Approx. 210-240 kg (varies by model and configuration)

Towing Capacity

Towing Capacity:

Typically rated for moderate towing; consult specific model specifications

🛡️ Safety Features

Ratings

Safety Features:

Integrated lighting, durable frame, reliable braking system, kill switch

Active Features

Braking System:

Drum brakes front and rear (or disc front, drum rear on some later models)

Passive Features

Rollover Protection:

Not applicable in the traditional sense; rider awareness and safe operation are paramount

💡 Technology Features

Infotainment

Infotainment System:

Not applicable (basic utility/recreational ATV design)

Driver Assistance

Driver Assistance Features:

None typical for this era and vehicle type.

Connectivity

Connectivity Features:

None.

🔧 Maintenance

Service Intervals

Engine Oil Change:

Every 1000 km or 6 months, whichever comes first (check manual for specific recommendation)

Air Filter Cleaning:

Every 500 km or as needed in dusty conditions

Spark Plug Check:

Every 1000 km

Valve Clearance Check:

Every 3000 km or annually

Fluid Specifications

Engine Oil Viscosity:

SAE 20W-40 or SAE 10W-30 (API SE, SF, SG or higher)

Brake Fluid:

DOT 3 or DOT 4 hydraulic brake fluid

Engine Oil Capacity:

Approx. 1.7 - 2.0 Liters (with filter change) - consult manual for exact capacity

Known Issues

Carburetor Issues:

Clogging due to age, ethanol damage, or debris; requires periodic cleaning and tuning.

Electrical Connector Corrosion:

Common in ATVs exposed to elements, leading to intermittent electrical faults.

Suspension Wear:

Bushings and ball joints can wear over time, affecting steering and ride quality.

Automatic Clutch Adjustment:

May require periodic adjustment to maintain optimal engagement.

📚 Vehicle History

Brand Heritage

Yamaha Atv Legacy:

Yamaha has a long history of innovation in powersports, including pioneering advancements in ATV technology.

Model Evolution

Moto 4 Positioning:

The MOTO 4 series was a popular line of utility and recreational ATVs known for their robust engineering and versatility.

Production

Manufacturing Origin:

Japan

🏆 Awards & Recognition

Recognitions

Industry Acclaim:

While specific awards are not listed for the MOTO 4 series, Yamaha's ATVs of this era were generally well-regarded for their durability and performance in their class.