Yamaha YZ250(G)/LC Service Manual
Documents the YZ250 series two-stroke motocross machine with complete clutch adjustment, carburetor tuning, and transmission maintenance procedures. Includes radiator capacity 1.2L and spark plug specifications.
Yamaha Models Covered & Key Technical Specifications
Models: Yamaha YZ250
Sub-models / Variants: YZ250LC (Europe), YZ250G1 (USA), YZ250(G) (Canada, Australia, New Zealand, South Africa)
Model Years: 1995
Serial Numbers: Frame: 4MX-000101 (F, D, GB, I), 4MX-006101 (ZA); Engine: 4MX-000101 (F, D, GB, I, E), 4MX-006101 (USA, CDN, ZA), 4MX-017101 (AUS, NZ)
Technical Data:
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Engine: Liquid-cooled 2-stroke, single-cylinder
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Displacement: 249 cc
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Bore x Stroke: 68.0 x 68.8 mm
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Compression Ratio: 9.0–10.9:1
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Transmission: Constant mesh, 5-speed
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Fuel System: PWK38 Keihin carburetor
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Ignition: CDI magneto
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Coolant Capacity: 1.2 liters (1.27 US qt)
Yamaha Manual Features & Content Preview
1995 Yamaha YZ250 Owner's Service Manual (4MX Series)
Stop guessing with generic specs. Whether you are a professional mechanic prepping a race bike or a DIY rider doing a weekend top-end rebuild, this 575-page official Yamaha publication (P/N 4MX-28199-80) delivers the exact factory clearances needed for the 1995 YZ250. It covers European, USA, and international variants.
Working on high-performance two-strokes requires precision. Always use the proper specialized tools outlined in this guide and follow standard workshop safety protocols to prevent component damage or personal injury during teardowns.
Designed to streamline your workflow, this manual offers a clear advantage over standard paper books:
- Instant digital download: Accessible on your phone, tablet, or laptop the second you check out. Get right to work.
- Fully searchable text (OCR): Stop flipping through hundreds of pages. Search by keyword to instantly jump directly to the exact torque spec or wiring diagram you need.
- Comprehensive system data: Features 47 torque-specification tables, 2 wiring schematics, and strict component-inspection criteria for the entire chassis and 249 cc liquid-cooled engine.
- Competition-level tuning: Documents fluid change schedules, baseline setups, and proper storage procedures to prevent metal deterioration during extended downtime.
Technical Data & Clearances
This guide reflects the industry standard for how factory workshop documentation is structured, providing structured technical data for the 4MX-model architecture without unnecessary fluff. Key reference points include:
- Cylinder bore: 68.000–68.014 mm
- Piston ring end gap: 0.55–0.75 mm
- Transmission oil capacity: 0.75 liters (for periodic changes)
- Cylinder head nuts torque: 28 Nm
Get the factory reference trusted by professional workshops to keep your YZ250 running at peak competitive performance.
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