🏷️ Basic Information Identification Make: Yamaha Model: YTM225ERN Type: All-Terrain Vehicle (ATV) Codes Model Code General: YTM225 👋 Introduction Market Position Category: Recreational/Utility ATV Target User: ATV owners and independent repair shops seeking comprehensive service information Competitive Analysis Manual Value: Essential resource for maintaining and repairing the YTM225ERN, reducing reliance on expensive dealership services. Key Features Completeness: Official factory service manual, providing authorized procedures and specifications. Diagnostic Capability: Includes troubleshooting sections to identify and resolve common and uncommon issues. 📋 Manual Details Coverage Areas Applicable Model Years: 1983, 1984, 1985, 1986 Page Count Estimated Pages: Hundreds (exact number varies by print or digital rendering) Manual Type Type: Workshop Service Repair Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Complete overhaul, tuning, carburetor, ignition, lubrication Transmission: Gearbox service, clutch operation, driveline maintenance Chassis And Suspension: Front and rear suspension, steering system, frame inspection Brakes: Drum brake service, linkage adjustment, hydraulic components (if applicable) Electrical System: Wiring diagrams, lighting, ignition system, battery, charging system Fuel System: Fuel tank, fuel lines, carburetor service and adjustment Cooling System: Air-cooled engine specifications and maintenance Exhaust System: Muffler and pipe inspection and replacement Bodywork And Trim: Body panel removal, seat, fenders, decals Procedures Included Maintenance: Scheduled maintenance, lubrication points, cleaning procedures Troubleshooting: Diagnostic guides for common issues, fault finding charts Repair: Step-by-step repair instructions for all major components Disassembly And Assembly: Detailed instructions for component removal and installation Rebuilding: Engine rebuild procedures, carburetor rebuilds Adjustments: Carburetor tuning, clutch adjustment, throttle cable adjustment Torque Specifications: Tightening specifications for critical fasteners Technical Depth Depth: Comprehensive factory-level detail covering diagnostics, repair, and overhaul Detail Level: Detailed diagrams, exploded views, schematics, and step-by-step instructions 📊 Manual Specifications File Format Format: PDF Searchability: Likely text-searchable, facilitating quick information retrieval Print Quality Quality: High-resolution scans for clear reproduction of text and diagrams Printability: Designed for printing, allowing users to create a physical copy Binding Type Suggested Binding: Comb binding or spiral binding recommended for workshop use Paper Type Recommended Paper: Durable, heavier stock paper recommended for workshop environments ⚙️ Engine Specifications Primary Engine Engine Type: 4-stroke, Air-cooled Displacement: 225cc (approximate) Bore X Stroke: Specifics available in manual Valvetrain: SOHC (Single Overhead Camshaft), 2-valve per cylinder (typical for this era) Performance Horsepower: Estimated 15-20 HP (exact figures vary) Torque: Specifics available in manual Fuel System Carburetor Type: Single Mikuni carburetor (typical, specific model in manual) Fuel Type: Unleaded Gasoline Fuel Tank Capacity: Specifics available in manual (typically around 2-3 gallons) 🔧 Transmission Standard Transmission Type: 5-speed manual with automatic clutch (often called 'semi-automatic') Optional Optional Transmission: N/A for this model Features Drive Type: Shaft Drive (RWD) Gear Ratios: Detailed in the manual Clutch Type: Automatic centrifugal clutch Transmission Fluid: Specific type and capacity detailed in manual (e.g., SAE 80W or 10W-40 engine oil) 📐 Dimensions Exterior Length: Specifics available in manual Width: Specifics available in manual Height: Specifics available in manual Weights Dry Weight: Specifics available in manual (typically around 350-400 lbs) Payload Capacity: Specifics available in manual Towing Capacity: Specifics available in manual (if applicable) 🛡️ Safety Features Ratings Atv Safety Standards: Adheres to general ATV safety guidelines of the era. Manual provides safety warnings. Active Features Braking System: Drum brakes front and rear (typical), mechanical actuation Passive Features Handlebars: Standard ATV handlebars with handgrips Footpegs: Large footpegs for rider stability 💡 Technology Features Infotainment Features: Basic instrumentation (speedometer, odometer, indicator lights). No advanced infotainment. Driver Assistance Features: None (standard mechanical controls). Connectivity Features: N/A 🔧 Maintenance Service Intervals Oil Change: Refer to manual for specific hours/miles; typically every few hundred hours or annually. Air Filter Cleaning: Frequent cleaning recommended, depending on operating conditions. Spark Plug Replacement: Specific interval detailed in manual (e.g., every 2,000-4,000 miles or annually). Valve Adjustment: Periodic checks and adjustments as per manual recommendations. Fluid Specifications Engine Oil Type: Yamalube or equivalent 4-stroke motorcycle/ATV oil (specific viscosity in manual, e.g., 10W-40). Transmission Oil Type: Refer to manual; may use engine oil or specific gear oil (e.g., SAE 80W). Brake Fluid Type: DOT 3 or DOT 4 (if hydraulic, but likely mechanical actuation on this model). Known Issues Carburetor Clogging: Common in older vehicles due to fuel degradation; requires cleaning and tuning. Electrical Connections: Corrosion or loose connections can lead to intermittent issues. Suspension Wear: Bushings and seals can degrade over time, affecting ride quality. Exhaust Leaks: Gasket failure or pipe corrosion can cause leaks. Automatic Clutch Adjustment: May require periodic adjustment to ensure proper engagement. 📚 Vehicle History Brand Heritage Manufacturer: Yamaha Motor Corporation, known for motorcycles, marine products, and musical instruments. Model Evolution Atv Development: Part of Yamaha's early forays into the ATV market, building on their powersports expertise. Y Tm Series: The YTM series was Yamaha's line of sporty ATVs in the mid-1980s. Production Production Period: 1983-1986 Key Market: North...