Market Niche:
The TRX850 occupied a niche as a capable, reliable, and characterful parallel-twin sportbike, appealing to riders seeking a blend of performance and everyday usability.
Competitors:
Competed against models like the Ducati 750SS, Suzuki Bandit 600/1200, and other parallel-twin or inline-four naked or semi-faired sportbikes of its era.
Engine Layout:
Distinctive 849cc parallel-twin engine with a 270-degree crankpin, providing strong torque and a characterful sound.
Design Philosophy:
Designed to offer a more accessible and engaging riding experience compared to high-strung four-cylinder sportbikes, with a focus on usability and character.
Engine:
Detailed engine disassembly, assembly, inspection, and repair, including valve adjustment, timing, lubrication, cooling system.
Fuel System:
Carburetor overhaul, fuel pump, fuel lines, and related components.
Ignition System:
CDI, spark plugs, ignition timing, and troubleshooting.
Transmission:
Clutch operation, gearbox disassembly and assembly, gear shift mechanism.
Chassis And Suspension:
Front fork overhaul, rear shock absorber, swingarm, bearings, and frame inspection.
Brakes:
Front and rear brake system overhaul, hydraulic circuits, caliper service, master cylinder repair.
Electrical System:
Wiring diagrams, battery, charging system, lighting, starting system, instrumentation, switches, and relays.
Cooling System:
Radiator, fan, coolant flow, and thermostat operation.
Exhaust System:
Removal, installation, and inspection of exhaust components.
Bodywork And Trim:
Fairings, seat, fuel tank, fenders, and related components.
Maintenance:
Routine maintenance, lubrication, inspections, and adjustments.
Troubleshooting:
Diagnostic procedures, common problems, and solutions for various systems.
Repair:
Detailed step-by-step instructions for component repair and replacement.
Disassembly Assembly:
Comprehensive guides for taking apart and putting back together all major vehicle components.
Special Tools:
Identification and usage instructions for specialized service tools.
Depth Of Coverage:
Full workshop level, covering everything from basic checks to complete engine rebuilds and complex electrical diagnostics.
Readability:
High resolution, zoomable for detail.
Printability:
Fully printable, allowing users to print specific sections or the entire manual.
Operating Systems:
Compatible with Windows, Mac, and Linux operating systems.
Required Software:
Adobe Reader or compatible PDF viewer.
Binding Type:
N/A (Digital PDF)
Paper Type:
N/A (Digital PDF)
Engine Type:
Liquid-cooled, 4-stroke, DOHC, 4-valve per cylinder, parallel-twin
Bore X Stroke:
92.0 x 75.0 mm
Horsepower:
Approx. 77 hp @ 7,500 rpm (claimed)
Torque:
Approx. 7.8 kgf-m (76.5 Nm; 56.4 lb-ft) @ 6,000 rpm (claimed)
Fuel Delivery:
Twin Mikuni BDSR36 carburetors
Ignition:
CDI (Capacitor Discharge Ignition)
Length:
Approx. 2,120 mm (83.5 in)
Width:
Approx. 770 mm (30.3 in)
Height:
Approx. 1,170 mm (46.1 in)
Dry Weight:
Approx. 184 kg (406 lbs)
Wet Weight:
Approx. 201 kg (443 lbs) (claimed, with all fluids)
Fuel Capacity:
18 Liters (4.76 US gal)
Instrumentation:
Analog tachometer, speedometer, odometer, trip meter, coolant temperature gauge, and indicator lights.
ABS:
Not available on standard models.
Oil Change Interval:
Recommended every 3,000 - 5,000 km (1,800 - 3,100 miles) or annually, depending on usage.
Valve Clearance Check:
Typically every 10,000 - 15,000 km (6,000 - 9,000 miles).
Engine Oil Type:
API SG or higher, JASO MA certified, SAE 10W-40 or 20W-40 (refer to manual for exact specifications based on temperature).
Coolant Type:
Ethylene glycol-based antifreeze and water mixture (50:50 ratio).
Brake Fluid Type:
DOT 4 or DOT 5.1.
Fork Oil Type:
Yamalube Fork Oil 10W or equivalent SAE 10W motorcycle fork oil.
Common Wear Items:
Clutch plates, brake pads, chain and sprockets, fork seals, steering head bearings.
Carburetor Sync:
Carburetors may require periodic synchronization to ensure smooth running and proper fuel mixture.
Electrical Connections:
Corrosion or loose connections in wiring harness can lead to electrical gremlins.
Yamaha Motorcycles:
Yamaha Motor Company has a long and distinguished history in motorcycle design and manufacturing, known for innovation and performance across various categories.
Trx850 Development:
Developed as a more torque-focused alternative to the inline-four sportbikes of the era, utilizing a parallel-twin engine configuration that offered a unique riding character and a sound reminiscent of larger V-twins.
Production Years:
1996-1997 (in Europe and other markets where it was primarily sold)
