2000 Yamaha YZ125(M)/LC Service & Repair Manual (P/N 5HD-28199-30)
Yamaha Models Covered & Key Technical Specifications
Models: YZ125LC, YZ125M1, YZ125(M)
Sub-models / Variants: USA, CDN, ZA, AUS, NZ, Europe
Model Years: 2000
Technical Data:
- Engine displacement: 124 cm3
- Engine type: Liquid cooled 2-stroke, single cylinder
- Bore x stroke: 54 x 54.5 mm
- Transmission type: 6-speed constant mesh
- Starting system: Kick starter
- Carburetor: Mikuni TMX36SS
- Fuel tank capacity: 8.0 L
- Front suspension: Telescopic fork, 300 mm travel
- Rear suspension: Monocross link type, 315 mm travel
- Ignition system: CDI magneto
Yamaha Manual Features & Content Preview
- 176-page OEM technical reference for the 2000 Yamaha YZ125(M)/LC motocross bike, covering international variants (USA, Canada, South Africa, Australia, New Zealand, and Europe)
- Official Yamaha Motor Co., Ltd. publication (P/N 5HD-28199-30), first edition released in June 1999
- Features four detailed torque specification tables for engine and chassis fasteners, plus two major exploded-view diagrams for quick component identification
- Provides the foundational technical data required for trackside tuning and shop maintenance on the 2000 model year run
Manual Structural Overview
The publication breaks down factory data into seven distinct chapters designed for shop workflow. It opens with general information covering model identification, machine weights, and essential storage procedures. Working on high-performance two-stroke race bikes requires precision and safety awareness; the initial chapters emphasize critical maintenance specifications to prevent component failure. You get direct access to factory torque values before moving into the engine breakdowns. The engine sections detail tolerances for the cylinder head, piston, carburetor, clutch, and transmission. A dedicated chassis chapter handles suspension setup, wheel truing, and brake component parameters. Finally, the electrical sections map out ignition system specs to help mechanics isolate spark or timing issues.
Engine and Chassis Specification Preview
Technicians rely on precise factory tolerances for race prep. This document delivers comprehensive charts alongside fluid capacity guidelines. For example, the engine assembly tables document the exact cylinder head bolt torque at 50 Nm. You will find the maximum allowable piston clearance limit specified at 0.1 mm, giving you a hard metric for top-end rebuilds. Cooling system capacity is strictly listed at 1.00 liters. Verifying these exact OEM specifications ensures parts mate correctly and the bike operates safely under severe track conditions.
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