1999 Yamaha YZ250 OEM Service & Repair Manual

1999 Yamaha YZ250 OEM Service & Repair Manual

Models covered:

• YZ250LC (EUROPE)
• YZ250L1 (USA)
• YZ250(L) (CDN, AUS, NZ, ZA)

The 1999 Yamaha YZ250 OEM Service & Repair Manual is the official guide to maintaining and repairing this two-stroke motocross model. Designed for accuracy and detail, it’s a go-to reference whether you’re a seasoned tech in the shop or a rider keeping your own bike dialed in.

The manual covers all the essentials—general specs, torque values, inspection schedules, and adjustment procedures. Engine service is explained step by step, from carburetor and reed valve cleaning to top-end rebuilds, clutch service, crankshaft work, and transmission overhauls. Cooling system checks, YPVS valve adjustment, and complete engine removal instructions are also included.

Content overview:

• General Information: model description, machine identification, safety info, control functions, torque check points, fuel/oil mixing, break-in procedures, and storage guidelines
• Specifications: general specs, maintenance specs, torque specifications, unit definitions, and cable routing diagrams
• Regular Inspection & Adjustments: service intervals, pre-operation inspections, chassis adjustments, electrical checks, and detailed maintenance procedures
• Engine: seat, fuel tank, exhaust, radiator, carburetor and reed valve, cylinder head, piston, clutch, crankshaft, transmission, CDI magneto, water pump, YPVS governor, and full engine removal/rebuild procedures
• Chassis: front and rear wheels, brakes, forks, handlebars, steering, swingarm, and rear shock absorber servicing
• Electrical: wiring diagrams, ignition system diagnostics, and solenoid valve system testing
• Tuning: engine tuning and chassis setup for performance adjustments

Chassis and suspension sections walk through fork service, swingarm inspection, shock absorber maintenance, and brake system repairs. You’ll also find electrical system diagnostics with wiring information, ignition testing, and tuning guidance to fine-tune performance. A solid tool for both professional mechanics and dedicated DIYers.

Printable: Yes
Language: English, French, German, Italian
Compatibility: Pretty much any electronic device, incl. PC & Mac computers, Android and Apple smartphones & tablet, etc.
Requirements: Adobe Reader (free)