
1991-1999 Yamaha TDM850 (3VD, 4TX) Service & Repair Manual



1991-1999 Yamaha TDM850 (3VD, 4TX) Service & Repair Manual
Models Covered:
- Yamaha TDM850 3VD (1991–1995)
- Yamaha TDM850 4TX (1996–1999)
Engine Covered:
- 849cc Parallel Twin, DOHC, 10-valve (5-valve per cylinder), liquid-cooled, 4-stroke
This 1991-1999 Yamaha TDM850 (3VD, 4TX) Service & Repair Manual provides comprehensive maintenance and repair guidance for both first-generation (3VD) and second-generation (4TX) models. Developed to assist both professional technicians and experienced DIYers, this manual includes factory-correct procedures and detailed specifications for the full model range over its production lifespan.
Covering everything from basic servicing to full engine overhauls, this manual is structured for logical troubleshooting and practical repair execution. It reflects Yamaha’s engineering evolution from the early carbureted 3VD models to the updated 4TX units, capturing all major changes and maintenance requirements throughout the 1990s.
Content Overview:
- Chapter 1 – Routine Maintenance & Servicing: Oil & filter changes, valve clearance checks, chain adjustment, brake pad renewal
- Chapter 2 – Engine, Clutch & Transmission: Camshaft removal, piston replacement, crankshaft bearings, transmission shaft service
- Chapter 3 – Cooling System: Radiator, thermostat, water pump inspection and replacement
- Chapter 4 – Fuel & Exhaust Systems: Carburetor overhaul, fuel tank removal, fuel pump replacement (TRX, XTZ variants)
- Chapter 5 – Ignition System: Ignitor unit, HT coils, ignition timing, throttle position sensor adjustment
- Chapter 6 – Frame, Suspension & Final Drive: Fork and shock absorber service, swingarm removal, bearing replacement
- Chapter 7 – Brakes, Wheels & Tyres: Brake caliper overhaul, master cylinder service, wheel bearing checks
- Chapter 8 – Bodywork: Seat, fairings, side covers, front mudguard removal and installation
- Chapter 9 – Electrical System: Starter motor, alternator, lighting, fuse box, turn signals, instrument cluster diagnostics
Ideal for vintage Yamaha owners, this manual delivers the in-depth technical guidance needed to preserve, repair, and maintain the TDM850 across all model years. Whether restoring a 3VD or tuning a 4TX, this guide ensures every job is done to Yamaha’s original standards.
Printable: Yes
Language: English
Compatibility: Works on all devices (Windows, macOS, Linux, Android, iOS)
Requirements: PDF reader (Adobe Reader or equivalent)