🏷️ Basic Information Identification Make: Honda Model: TRX125 Fourtrax Model Designation: Fourtrax Generation Production Years Covered: 1985-1986 Codes Model Code: TRX125 👋 Introduction Market Position Target Audience: Owners and technicians performing maintenance, repair, and overhaul on 1985-1986 Honda TRX125 Fourtrax ATVs. Competitive Analysis Dealer Equivalence: Provides the same information as the official dealership service manual. Key Features Content Quality: Hundreds of original photographs and illustrations, step-by-step procedures, comprehensive troubleshooting. Value Proposition Cost Savings: Enables DIY repairs and maintenance, saving significant costs compared to dealer labor. Delivery Method Delivery: Instant download via a provided link after purchase. 📋 Manual Details Coverage Areas Primary Coverage: Comprehensive service, repair, and overhaul Secondary Coverage: Maintenance, tune-up, troubleshooting, diagnostics Page Count Total Pages: 250 Manual Type Type: Official Workshop Service and Repair Manual (FSM) Language Language: English Format Format: PDF (Digital Download) 📖 Manual Coverage Systems Covered Powertrain: Engine, transmission, clutch, drive mechanism, sub-transmission Chassis: Front wheel, rear wheel, steering, suspension (front fender, rear fender) Electrical: Ignition system, battery, charging system, starter system, lights, switches Fuel System: Fuel system (carburetor, fuel tank) Braking System: Front brake, rear brake Exhaust System: Exhaust pipe Procedures Included Maintenance: Lubrication, scheduled maintenance, tune-ups, fluid changes Repair Overhaul: Engine rebuild, transmission overhaul, clutch service, starter replacement, electrical component repair, brake system service, suspension overhaul Troubleshooting: Comprehensive troubleshooting guide for common problems and diagnostics Installation: Engine installation/removal, component installation Technical Depth Depth: Highly detailed, step-by-step instructions with hundreds of original photographs and illustrations. Suitable for first-time mechanics to experienced technicians. 📊 Manual Specifications File Format Format: PDF Print Quality Printability: Printable without restriction Binding Type Binding: N/A (Digital Download) Paper Type Paper Type: N/A (Digital PDF) Software Requirements Reader: Adobe PDF Reader ⚙️ Engine Specifications Primary Engine Engine Type: Air-cooled, 4-stroke, OHC, single-cylinder Displacement: 124 cc (approx.) Bore X Stroke: Not explicitly stated in provided data, but detailed in manual. Compression Ratio: Not explicitly stated in provided data, but detailed in manual. Performance Horsepower: Not explicitly stated in provided data, but detailed in manual. Torque: Not explicitly stated in provided data, but detailed in manual. Fuel System Carburetor Type: Not explicitly stated in provided data, but covered in manual (likely a single downdraft carburetor). Fuel Capacity: Not explicitly stated in provided data, but detailed in manual. Lubrication Oil Type Recommendation: Manual will specify viscosity and API classification for engine oil. Oil Capacity: Not explicitly stated in provided data, but detailed in manual. Ignition System Ignition Type: CDI (Capacitor Discharge Ignition), potentially with a magneto. Starter System Starting Method: Recoil starter (kick start) and likely electric starter. 🔧 Transmission Standard Type: Automatic (likely a Continuously Variable Transmission - CVT, or torque converter based automatic). Gear Selection: Not applicable for CVT/automatic, likely a selector for forward, neutral, reverse. Features Drive Mechanism: Shaft drive (to rear wheels), potentially with limited-slip differential or solid axle. Sub Transmission: Manual covers sub-transmission operations, suggesting potential gear reduction or other selectable drive modes. Fluid Specifications Transmission Fluid: Manual will specify recommended fluid type and capacity. 📐 Dimensions Exterior Overall Length: Not explicitly stated in provided data, but detailed in manual. Overall Width: Not explicitly stated in provided data, but detailed in manual. Wheelbase: Not explicitly stated in provided data, but detailed in manual. Weights Dry Weight: Not explicitly stated in provided data, but detailed in manual. Curb Weight: Not explicitly stated in provided data, but detailed in manual. 🛡️ Safety Features Ratings Crash Test Ratings: N/A (ATV - Not applicable for standardized automotive crash ratings). Active Features Braking System Description: Drum brakes on both front and rear wheels, as typical for this era and class of ATV. Passive Features Lighting: Headlight, taillight, and brake light systems covered. 💡 Technology Features Infotainment Features: N/A (This era of utility ATV did not feature infotainment systems). Driver Assistance Features: N/A (Focus is on mechanical and electrical systems for operation and maintenance). Connectivity Features: N/A (No electronic connectivity features). 🔧 Maintenance Service Intervals Oil Change Interval: Manual will specify recommended intervals based on operating hours or mileage. Air Filter Cleaning: Manual will detail cleaning and replacement intervals for the air filter. Spark Plug Maintenance: Manual will provide specifications and recommended service intervals for the spark plug. Fluid Specifications Engine Oil Viscosity: Manual will specify the correct SAE viscosity grade (e.g., SAE 10W-30, SAE 20W-40) and API classification. Brake Fluid Type: Manual will specify the DOT classification for brake fluid (likely DOT 3). Gear Oil Type: Manual will specify the type of oil for the final drive/gearbox if separate from engine oil. Known Issues Common Wear Items: Manual covers maintenance for wear items such as brake pads, tires, spark plugs, and air filters. Troubleshooting Focus: Addresses common problems like starting issues, poor performance, and electrical faults, providing diagnostic steps. 📚 Vehicle History Brand Heritage Manufacturer: Honda Motor Co., Ltd. - renowned for reliability...