Yamaha YZ250(G)/LC Service Manual (575 P.)

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.

4.7starstarstarstarstar_half(3)
visibility Preview Available
Yamaha Yamaha YZ250(G)/LC Service Manual (575 P.) manual page preview - page 1 of 575

Sample pages from the Yamaha YZ250(G)/LC Service Manual (575 P.) manual

Yamaha Yamaha YZ250(G)/LC Service Manual (575 P.) manual preview page 1 - thumbnail
info_outline Click thumbnails to preview different pages

Purchase & Download

$15.59 (incl. VAT) Instant Download / No Shipping Fees
1 sold in the last 30 days
OR BUY NOW
verified_user
Lifetime Access
Re-download anytime
flash_on
Instant Download
Get it immediately
lock
Secure Payment
PayPal

Document Details

keyboard_arrow_down
Document Number / Seller:
23511 / Betty Gomez
File Size:
16.11 MB
File Type:
PDF
Language:
English, French, German
Pages:
575
Printable:
Yes
Category:
Motorcycle
Last updated / verified
Mar 31, 2025

Models Covered & Key Technical Specifications

Yamaha YZ250(G)/LC — 1995 Documentary Engineering Blueprint | YZ250 Service Package.

  • Authorized Unit Dimensions: The overall length is specified as 2,188 mm (86.1 in) representing the machine's maximum longitudinal measurement Benchmarks.

  • Published DPI Rating: Seat height delivers 992 mm (39.1 in) from the ground, establishing optimum rider positioning Standards.

  • Reference Securement Values: Cylinder bore measures 68.000–68.014 mm (2.6772–2.6777 in) for precise piston fit Sequences.

  • Established Clearance Data: Piston ring end gap requires 0.55–0.75 mm (0.022–0.030 in) installation clearance to maintain operational Baseline.

  • Measured Output Rating: Maximum compression ratio reaches 9.0–10.9:1, controlling combustion chamber pressure Requirements.

  • Core Physical Specs: Fuel tank capacity supports 7.7 L (1.69 Imp gal, 2.03 US gal) for extended operation Threshold.

Professional Workshop Service Manual & Technical Specifications

Commercial Shop Shop Manual: Yamaha YZ250(G)/LC Troubleshooting-Index

Series-Validation: YZ250, YZ125, YZ450F // Unit-Designations: Motorcycle Systems & Diagnostic-Logic // Reference-Category: Multi-Language Service Documentation with Complete Technical Specifications.

Document Section Coverage Area Validation-Data
General Information Machine identification, control functions, pre-operation checklist Serial numbers, specifications, torque reference points
Engine Systems Cylinder, piston, crankshaft, transmission, clutch assembly Wear limits, clearances, component specifications
Chassis & Suspension Front forks, rear shock absorber, steering, frame alignment Adjustment procedures, damping force settings, bearing specifications
Brake Systems Front and rear disc brakes, fluid specifications, bleeding procedures Brake pad thickness limits, fluid type (DOT #4), inspection intervals
Electrical Systems CDI ignition, spark plugs, wiring diagrams, magneto specifications Ignition timing, coil resistance values, connector details

Repair procedures are structured around systematic disassembly sequences that clearly identify component relationships. The manual encompasses carburetor configuration, drive chain alignment, and wheel bearing maintenance, establishing foundational knowledge for technical personnel. Carefully requiring thorough inspection of mated parts, the documentation presents throttle cable routing, brake hose positioning, and fuel system breather arrangements with precise call-outs. Technical notes are provided for transmission oil capacity, coolant specifications, and tire pressure verification. The troubleshooting chapter addresses seasonal maintenance intervals, documenting procedures for every third and fifth race conditions.

Quality checks are addressed for spark plug gap measurement, radiator cap opening pressure testing, and suspension damping force adjustment protocols. The torque specification section references fastener requirements across engine mounting, chassis assembly, and brake component installation, documenting specifications for the primary drive gear, clutch boss, and steering ring nut assembly. Strategic reference material includes component identification diagrams, cable routing overviews, and setting parts selection tables for carburetor jet configuration and sprocket sizing options.

The document provides torque specifications for [component] to ensure proper fastener fatigue prevention throughout critical drivetrain assemblies and frame attachment points.

FAQ

Check the **standard** component identification on the Yamaha YZ250? keyboard_arrow_down

4MX-000101 is the frame serial number starting designation for F, D, GB, and I models, stamped on the right of the steering head pipe for proper machine identification.

What does the **necessary** adjustment require for the clutch lever? keyboard_arrow_down

2-4 mm (0.08-0.16 in) free play at the lever pivot point must be maintained, adjusted by loosening the locknut and turning the adjuster until specification is achieved.

Reference the **recommended** coolant mixture specifications for this engine? keyboard_arrow_down

50%/50% ratio of high quality ethylene glycol anti-freeze to soft water with total capacity of 1.2 L (1.06 Imp qt, 1.27 US qt) is required for proper cooling system function.

What are the **calibrated** rear shock absorber spring preload settings? keyboard_arrow_down

237.5-258.5 mm (9.35-10.17 in) installed length range is the adjustment extent, with 248 mm (9.76 in) as standard position, changing 1.5 mm per complete adjuster rotation.

Customer Reviews

Read what our customers say about this Yamaha Motorcycle manual and share your own experience.

Add a Review

* Required information
1000
Captcha Image

Reviews (3)

Avatar
New
Rated 4 out of 5 stars
Avatar
New
This manual is a must-have for anyone with a Yamaha YZ. The detailed specifications and maintenance tips are incredibly useful. Plus, the download process was smooth, and I received the link almost instantly!
Avatar
New
The manual is well-structured and covers everything I need. I appreciated the quick response from customer support when I had a question about the download. Highly recommend!