🏷️ Basic Information Identification Make: Yamaha Model: Moto-4 225 Model Line: Moto-4 Body Style: ATV (All-Terrain Vehicle) Codes Engine Code: Likely 225cc class air-cooled OHV, specific code varies by sub-model/region Chassis Code: Specific chassis codes exist for different configurations, not explicitly stated in product name 👋 Introduction Market Position Vehicle Segment: Entry-level to mid-range recreational ATV, popular for trail riding and light utility work. Target Audience: Recreational riders, casual trail users, and those seeking a reliable, straightforward ATV. Competitive Analysis Key Competitors: Other 200-250cc class ATVs from manufacturers like Honda (e.g., TRX200), Suzuki (e.g., LT230), and Kawasaki (e.g., KLT200/250). Key Features Engine Type: Simple, air-cooled, overhead valve (OHV) engine known for its durability and ease of maintenance. Transmission: Typically features a manual clutch with a 5-speed or 6-speed transmission, offering good gear selection for varied terrain. Drivetrain Type: Shaft-driven rear-wheel drive (RWD) for simplicity and reduced maintenance compared to chain drive. Suspension Layout: Independent front suspension (IFS) for better ride comfort and control, paired with a swingarm rear suspension. Braking System: Drum brakes front and rear, or front disc and rear drum, offering reliable stopping power. 📋 Manual Details Coverage Areas Manual Type: Factory Service Manual / Repair Manual Language: English Format: Likely printed manual; digital PDF formats may also be available from third-party sellers Page Count Page Count: Estimated 200-300 pages (typical for this era of service manuals) 📖 Manual Coverage Systems Covered Engine: Complete engine disassembly, assembly, inspection, and tuning procedures for the 225cc engine. Fuel System: Carburetor overhaul, inspection, adjustment, fuel tank, fuel lines, and fuel pump (if applicable). Ignition System: CDI ignition system diagnosis, testing, component replacement (stator, coil, spark plug). Drivetrain: Clutch operation, transmission disassembly and assembly, gear shift mechanism, drive shafts, and final drive. Suspension: Front and rear suspension fork service, shock absorber inspection and replacement, bushings, and linkage maintenance. Brakes: Front and rear brake system inspection, maintenance, adjustment, caliper service, brake fluid replacement, and bleeding procedures. Electrical System: Wiring diagrams, lighting system, battery maintenance, starter system, charging system (stator, regulator/rectifier), and fuse/relay identification. Frame And Body: Chassis inspection, handlebar and control assembly, seat, fenders, and plastic component removal/installation. Procedures Included General Maintenance: Routine service, oil changes, filter replacements, lubrication points, and pre-ride inspections. Troubleshooting: Diagnostic flowcharts and common problem identification for engine, electrical, and mechanical issues. Repair Procedures: Step-by-step instructions for component replacement and repair, including torque specifications. Carburetor Tuning: Detailed instructions for cleaning, rebuilding, and adjusting the carburetor for optimal performance. Valve Adjustment: Procedures for checking and adjusting valve clearance. Engine Rebuild: Comprehensive guide for complete engine overhauls, including piston, cylinder, and crankshaft service. Electrical Diagnostics: Guidance on using multimeters and test equipment to diagnose electrical faults. Technical Depth Depth Level: Comprehensive: Covers everything from basic maintenance and fluid checks to complete engine and drivetrain rebuilds. Diagnostic Capability: High: Includes diagnostic charts and procedures for identifying and resolving mechanical and electrical issues. Specifications Detail: Detailed: Provides precise torque values, clearances, fluid capacities, and electrical resistance measurements. 📊 Manual Specifications File Format Digital Format: PDF (if digital); High-resolution scans of original printed manual. Print Quality Print Quality: N/A (for original print); High clarity for digital reproduction. Binding Type Binding Type: Original: Spiral bound or saddle-stitched; Digital: PDF. Paper Type Paper Type: Original: Durable, coated paper designed for shop use; Digital: N/A. Searchability Searchability: Yes (for PDF versions with OCR); Index provided in print version. ⚙️ Engine Specifications Primary Engine Engine Type: Four-stroke, air-cooled, SOHC (Single Overhead Camshaft) or OHV (Overhead Valve) configuration. Displacement: Approximately 223cc to 225cc (exact displacement may vary slightly by specific sub-model). Bore X Stroke: Specific dimensions are detailed in the manual, typically around 66mm x 65mm for this class. Compression Ratio: Typically around 9.5:1 to 10.5:1, specified in the manual. Power Output Hp: Estimated 15-20 HP at around 6,000-7,000 RPM (actual figures in manual). Torque Ft Lbs: Estimated 15-18 lb-ft at around 5,000 RPM (actual figures in manual). Performance Carburetor Model: Mikuni VM series or similar single carburetor (e.g., VM26, VM28), specifics in manual. Cooling System: Forced air cooling. Fuel System Fuel Type: Unleaded gasoline. Fuel Tank Capacity: Typically 2.5-3.0 gallons (approx. 9.5-11.4 liters). Fuel Delivery: Gravity feed from tank to carburetor. 🔧 Transmission Standard Transmission Type: 5-speed or 6-speed manual transmission with manual clutch operation. Clutch Type: Wet, multi-plate manual clutch. Optional Reverse Gear: Some models may be equipped with a reverse gear, check specific model variant. Features Final Drive: Shaft drive to rear axle. Gear Ratios: Detailed gear ratios for all speeds and final drive ratio are provided in the service manual. Transmission Fluid Type: Yamalube Gear Oil or equivalent SAE 10W-30 or 10W-40 API SE, SF engine oil is often specified for shared lubrication with the engine. 📐 Dimensions Exterior Length: Approximately 71-74 inches (180-188 cm). Width: Approximately 40-42 inches (101-107 cm). Height: Approximately 41-43 inches...