Basic Information Identification Make: Honda Model: TRX450R Model Variant: TRX450ER Product Type: Service & Repair Manual Codes Model Codes: TRX450R, TRX450ER Chassis Codes: N/A (ATV specific) Introduction Market Position Positioning: The Honda TRX450R is positioned as a high-performance, competition-ready sport ATV, known for its potent engine and capable chassis. Competitive Analysis Competitors: Primary competitors include Yamaha YFZ450, Suzuki LT-R450, and Kawasaki KFX450R during its production run. Key Features Performance Focus: Designed for recreational trail riding, cross-country racing, and motocross, emphasizing power, handling, and durability. Engineering: Renowned Honda engineering, featuring a potent engine and a well-balanced chassis for superior rider control. Manual Utility Value Proposition: An essential resource for owners and technicians to maintain, diagnose, and repair the TRX450R, ensuring optimal performance and longevity. Manual Details Coverage Areas Covered Years: 2004, 2005, 2006, 2007, 2008, 2009, 2012, 2013, 2014 Not Produced Years: 2010, 2011 Models Covered: TRX450R, TRX450ER (with updates for 2008+ models) Page Count Total Pages: 573 Manual Type Type: Comprehensive Repair Manual Language Language: English Format Format: PDF Download Manual Coverage Systems Covered Engine: Complete engine teardown and rebuild, internal components, lubrication system, cooling system, ignition system, fuel system (carbureted and PGM-FI), starting system. Transmission: Gearbox operation, clutch system, drive train, final drive. Chassis And Suspension: Frame, front suspension (A-arms, shocks, steering), rear suspension (swingarm, linkage, shock), wheels, tires, brakes (front and rear), handlebars, steering system. Electrical And Lighting: Battery, charging system (stator, rectifier/regulator), ignition system, lighting circuits, starter motor, switches, wiring diagrams. Bodywork And Plastics: Fenders, body panels, seat, fuel tank, plastics. Procedures Included Maintenance: Scheduled maintenance, fluid changes (oil, coolant), filter replacements, chain adjustment, brake adjustments, valve clearance checks/adjustments. Repair And Rebuild: Complete engine overhaul, transmission rebuild, suspension component replacement, brake system repair, electrical component troubleshooting and repair. Troubleshooting: Diagnostic procedures for common problems, no-spark issues, starting problems, performance issues, error code interpretation (for PGM-FI models). Installation And Adjustment: Installation of new parts, adjustment of various systems (throttle cable, clutch, brakes), carburetor tuning/adjustment, fuel injection system checks. Technical Depth Depth: Expert level, covering complete disassembly, reassembly, diagnostics, and specifications for both basic maintenance and in-depth repairs. Visual Aid Quality: Includes numerous pictures and part diagrams to illustrate procedures and component identification. Data Availability: Contains critical technical data such as torque specifications, fluid capacities, and dimensional data. Manual Specifications File Format Format: PDF Searchability: Searchable text for quick information retrieval. Printability: No restrictions on printing or saving/burning to disc. Print Quality Image Clarity: Assumed to be high given the inclusion of pictures and diagrams. Binding Type Binding: N/A (Digital Download) Paper Type Paper: N/A (Digital Download) Engine Specifications Primary Engine Engine Type: 4-stroke, SOHC, 4-valve, liquid-cooled single-cylinder Displacement: 449cc Bore X Stroke: 92.0 mm x 81.5 mm (Typical, may vary slightly) Compression Ratio: 11.5:1 (Typical) Fuel Delivery: Carburetor (initially) and later PGM-FI (Programmed Fuel Injection) for 2008+ models. Ignition: Digital transistorized ignition with electronic advance Starter: Electric starter, some models may also feature a kick starter. Performance Horsepower: Approximately 45-50 HP (Estimate, specific dyno figures vary) Torque: Approximately 30-33 lb-ft (Estimate) Fuel System Carburetor Type: Keihin 40mm flat-slide (Typical for earlier models) Efi System: PGM-FI with 44mm throttle body (2008+ models) Transmission Standard Transmission Type: 5-speed manual with reverse Clutch Type: Wet, multi-plate Features Drive: Chain drive Final Drive: O-ring sealed chain Dimensions Exterior Length: Approx. 71.7 inches (1821 mm) Width: Approx. 45.7 inches (1161 mm) Height: Approx. 43.9 inches (1115 mm) Weights Dry Weight: Approx. 375 lbs (170 kg) Curb Weight: Approx. 397 lbs (180 kg) (with all necessary operating fluids) Weight Distribution: Designed for optimal balance and stability. Safety Features Ratings Atv Classification: Sport ATV Active Features Braking System: Dual hydraulic disc brakes (front), Single hydraulic disc brake (rear). Suspension Design: Independent double-wishbone front suspension and Pro-Link rear suspension contribute to stability and control. Passive Features Ergonomics: Designed for rider comfort and control, with handlebars and controls positioned for aggressive riding. Technology Features Infotainment Infotainment System: N/A (ATV focus is on performance, not infotainment). Driver Assistance Driver Assistance Features: N/A (ATV focus is on rider control, not electronic driver assistance systems common in automobiles). Connectivity Connectivity Options: N/A Maintenance Service Intervals Engine Oil Change: Every 100 hours or annually, whichever comes first (refer to manual for specific conditions). Air Filter Cleaning: Every 20 hours or after extensive dusty riding. Valve Clearance Check: Every 600 hours or every two years. Fluid Specifications Engine Oil Type: SAE 10W-40 API SG or higher (check manual for specific viscosity grade based on temperature). Engine Oil Capacity: Approx. 1.7 US qt (1.6 L) without filter change, 1.8 US qt (1.7 L) with filter change (refer to manual for precise capacity). Coolant Type: Honda High Performance Coolant or equivalent (50/50 mix of antifreeze and distilled water). Transmission Oil Type: Honda High Performance Hypoid Gear Oil 80W/90 or equivalent. Known Issues Common Problems:...