2001 Yamaha YZ80/YZ80LW Service Manual
Covers the YZ80(N)/LC and YZ80LW(N) models, providing detailed diagrams, specifications, and repair sequences for engine, chassis, and electrical systems. Includes part numbers for quick reference.
Yamaha Models Covered & Key Technical Specifications
Models: Yamaha YZ80, Yamaha YZ80LW
Sub-models / Variants: YZ80N, YZ80LC, YZ80LWN, USA, Canada, Australia, New Zealand, Europe, South Africa specifications
Model Year: 2001
Technical Data:
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Engine: Liquid-cooled 2-stroke, single cylinder, 82.9 cc displacement
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Bore × Stroke: 47.0 × 47.8 mm (1.850 × 1.882 in)
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Compression Ratio: 8.2:1
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Transmission: Constant mesh, 6-speed
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Ignition: CDI Magneto, 14°/11,000 r/min timing
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Fuel Capacity: 5 L (1.32 US gal)
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Transmission Oil Capacity: 0.50 L (0.52 US qt)
Yamaha Manual Features & Content Preview
2001 Yamaha YZ80 & YZ80LW Official Service Manual
- Official Yamaha publication (4ES-28199-88) covering the 82.9cc liquid-cooled two-stroke engine.
- 534 pages of detailed exploded-view diagrams, torque-check reference charts, and electrical schematics.
- Delivered as an instant download immediately after checkout.
- Fully searchable OCR text layer lets you jump straight to a specific torque spec by keyword.
- High-resolution formatting ensures page spreads stay legible when printed at original size for the workbench.
- Contains the exact factory clearance specs needed for correct carburetor tuning and engine assembly.
What's Inside
This is the complete 2001 Yamaha YZ80 and YZ80LW workshop reference. It covers everything from basic machine identification to operational maintenance. Because this is an instant download, you can pull it up on your shop laptop or tablet immediately and get straight to work.
Major chapters detail step-by-step engine disassembly, crankshaft inspection, and cylinder head assembly. You also get deep dives into chassis maintenance, including front fork and monocross rear suspension adjustments. Always review the included factory safety protocols before starting any teardown to protect yourself and avoid damaging sensitive components.
The manual doesn't just cover hard parts. It provides transmission gear ratios, CDI magneto testing, and comprehensive tuning guides for varying track conditions and weather. You will find dedicated maintenance schedules for the cooling system, clutch, and drive chain.
Specification Highlights
No guesswork. Detailed tables provide precise engine tolerance charts and wear limits for pistons, rings, and connecting rods.
Key factory specs included:
- Cylinder head bolt torque: 30 Nm (22 ft-lb)
- Crankcase cover bolts: 10 Nm (7.2 ft-lb)
- Cooling system capacity: 0.5 liters
- Source coil resistance: 257–314 ohms
- Pick-up coil resistance: 15.8–19.4 ohms
- Ignition timing: 14° BTDC at 11,000 r/min
- Spark plug gap: 0.5–0.6 mm (0.020–0.024 in) using a BR10EG/NGK plug
This official OEM reference provides the exact engine, chassis, and electrical specifications required to maintain your YZ80 and YZ80LW competition models correctly.
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