🏷️ Basic Information

Make:

Yamaha

Model:

YFM200 Moto-4

Model Designation:

Moto-4 200

Type:

All-Terrain Vehicle (ATV)

Engine Code:

Likely a variant of the Yamaha XT200 engine, specific code not provided in product data.

👋 Introduction

Category:

Entry-level to mid-range recreational ATV.

Target User:

Hobbyists, trail riders, casual farm use.

Contemporaries:

Competed with models from Honda (e.g., TRX200), Suzuki (e.g., QuadSport LT230), Kawasaki (e.g., KLT200).

Feature 1:

Reliable air-cooled engine.

Feature 2:

Shaft drive for reduced maintenance compared to chain drive.

Feature 3:

Independent front suspension for improved ride quality.

Feature 4:

Automatic transmission (likely clutch-less or torque converter based).

📋 Manual Details

Market Segment:

Recreational ATV

Geographic Coverage:

Likely Global (English language manual)

Page Count Estimate:

Estimated 200-400 pages (typical for comprehensive workshop manuals of this era)

Manual Type:

Workshop Service Repair Manual

Publisher Type:

Aftermarket / Third-Party

Language:

English

File Format:

PDF

Accessibility:

Downloadable

📖 Manual Coverage

Engine Mechanical:

Engine disassembly, assembly, inspection, overhaul (cylinder, piston, rings, crankshaft, connecting rod, valves, camshaft, timing).

Fuel System:

Carburetor service, fuel tank, fuel lines, fuel filter.

Ignition System:

CDI unit, ignition coil, spark plug, stator, wiring.

Lubrication System:

Oil pump, oil filter, oil passages, oil change procedures.

Cooling System:

Air cooling system (fins, airflow management).

Transmission System:

Clutch operation, gear shifting mechanism, transmission disassembly and assembly.

Drivetrain:

Drive shaft, differential (if applicable), rear axle, wheel hubs, bearing service.

Suspension System:

Front and rear suspension components, shock absorbers, bushings, linkage service.

Braking System:

Front and rear brake mechanisms (drum or disc), brake levers, cables, fluid lines (if hydraulic).

Electrical System:

Wiring diagrams, lighting systems, battery service, starter motor, charging system (generator/alternator).

Chassis And Frame:

Frame inspection, steering assembly, handlebars, control cables.

Bodywork And Trim:

Fenders, plastics, seat, footrests, decals.

Routine Maintenance:

Oil changes, filter replacements, chain adjustment, spark plug inspection, air filter cleaning/replacement.

Troubleshooting:

Diagnostic procedures for common performance issues, starting problems, electrical faults.

Repair And Rebuild:

Step-by-step instructions for component removal, repair, and reinstallation.

Specifications And Tolerances:

Torque values, gap settings, wear limits, fluid capacities.

Wiring Diagrams:

Comprehensive electrical system schematics.

Depth:

Comprehensive (covering diagnostics, repair, overhaul, and routine maintenance).

Target Audience:

Professional technicians and experienced DIY mechanics.

📊 Manual Specifications

File Type:

Portable Document Format (PDF)

Searchability:

Likely searchable text (depending on scan quality)

Printability:

Yes (Printable)

Binding Type:

Digital (N/A for PDF)

Paper Type:

Digital (N/A for PDF)

Operating Systems:

Windows and macOS compatible

⚙️ Engine Specifications

Engine Type:

Four-stroke, SOHC

Cooling Method:

Air-cooled

Displacement:

Approximately 195cc to 200cc (exact spec may vary by sub-model or year).

Bore X Stroke:

Typical for this class, e.g., around 66.0 mm x 57.0 mm (specifics in manual).

Compression Ratio:

Typically around 9.5:1 to 10.5:1 (specifics in manual).

Horsepower Estimate:

Estimated 15-18 HP (at flywheel, specific rating varies).

Torque Estimate:

Estimated 12-15 lb-ft (specific rating varies).

Fuel Delivery:

Carburetor (likely a single Mikuni VM series or similar).

Carburetor Model Estimate:

Mikuni VM24 or similar (specifics in manual).

Fuel Type:

Unleaded Gasoline

Fuel Tank Capacity:

Approx. 2.5 - 3.0 gallons (specifics in manual).

Ignition Type:

Transistor Controlled Ignition (TCI) / CDI

🔧 Transmission

Transmission Type:

Automatic (likely with high/low range or continuously variable transmission - CVT technology was nascent in this era, so a torque converter with automatic transmission gears is more probable).

Drive System:

2WD (Rear Wheel Drive)

Final Drive:

Shaft Drive

Transmission Fluid Type:

Yamalube or equivalent SAE 20W-40 API SE/SF (specifics in manual).

📐 Dimensions

Overall Length Estimate:

Approx. 70-75 inches.

Overall Width Estimate:

Approx. 40-45 inches.

Overall Height Estimate:

Approx. 42-45 inches.

Dry Weight Estimate:

Approx. 350-400 lbs (specifics in manual).

Ground Clearance Estimate:

Approx. 6-8 inches (specifics in manual).

Front Rack Capacity Estimate:

Approx. 20-30 lbs (specifics in manual).

Rear Rack Capacity Estimate:

Approx. 40-50 lbs (specifics in manual).

🛡️ Safety Features

Atv Safety Standards:

Adherence to relevant safety standards of the era, as per manufacturer's design.

Braking System:

Front and rear drum brakes (common for this model year), or potential for front disc brakes on later iterations. Manual will detail both.

Chassis Design:

Designed for stability and rider control within its class.

Lighting:

Headlight, taillight/brake light.

💡 Technology Features

Infotainment System:

N/A (Basic design for its era).

Driver Assistance Features:

N/A (Basic design for its era).

Connectivity Features:

N/A (Basic design for its era).

🔧 Maintenance

Oil Change Interval:

Typically every 600-1000 miles or annually (specifics in manual).

Spark Plug Replacement:

Inspection every 1000 miles, replacement as needed or at higher mileage intervals (specifics in manual).

Air Filter Maintenance:

Cleaning/replacement every 500-1000 miles or more frequently in dusty conditions (specifics in manual).

Valve Adjustment:

Inspection/adjustment every 3000-5000 miles or as recommended (specifics in manual).

Engine Oil Type:

Yamalube 4 (4-stroke motorcycle oil) or equivalent SAE 20W-40 API SE/SF or SG classification.

Engine Oil Capacity:

Approx. 1.5 - 2.0 liters (specifics in manual).

Brake Fluid Type:

DOT 3 or DOT 4 if hydraulic (specifics in manual).

Common Issue 1:

Carburetor gumming/clogging due to fuel degradation if not stored properly.

Common Issue 2:

Wear on suspension bushings and ball joints over time.

Common Issue 3:

Potential for starter motor issues or battery drain if electrical system is neglected.

Common Issue 4:

Normal wear and tear on drivetrain components (shaft drive spline lubrication).

📚 Vehicle History

Manufacturer:

Yamaha Motor Corporation

Heritage Description:

Yamaha is a renowned Japanese manufacturer with a long history in motorcycles, marine engines, and musical instruments. Its foray into ATVs began in the late 1970s and early 1980s.

Introduction Period:

Mid to late 1980s (e.g., 1985-1989 model years are common).

Development Context:

Part of Yamaha's expansion into the growing ATV market, offering a reliable and accessible option.

Manufacturing Location Estimate:

Likely Japan or other Yamaha global manufacturing facilities.

🏆 Awards & Recognition

Awards And Recognitions:

Specific awards for the YFM200 Moto-4 are not prominently documented, but Yamaha ATVs of this period were generally well-regarded for reliability and performance in their class.