1999-2006 Yamaha TTR250L(C) Service Manual (P/N LIT-11616-12-57, 5GF-28197-E0)

• Provides essential technical specifications and maintenance data for 1999–2006 Yamaha TTR250L and TTR250LC dual-sport motorcycles.
• Official Yamaha publication LIT-11616-12-57 (First edition, January 1999).
• Primary factory reference spanning 295 pages for the 5GF1/5GF2 model series maintenance and mechanical overhauls.
• Features 44 detailed torque specification entries, 15 illustrated lubrication diagrams, and 12 complete cable routing schematics for correct assembly.

Mechanical Data and Workshop Reference

Getting reliable numbers for a 249cc DOHC powerplant rebuild should never involve guesswork. This manual thoroughly documents internal engine clearances, chassis adjustment parameters, and electrical system diagnostics. Sections detail the complete overhaul of the cylinder head, camshaft timing, valve train, clutch components, and transmission internals. Each chapter pairs exploded-view parts diagrams with highly specific wear limits to speed up component evaluation on the workbench. Working on these high-performance systems involves inherent risks, so technicians must always apply standard safety practices and ensure they have the proper training before tearing down the engine or chassis.

Engine and Chassis Specifications

Fast access to exact measurements keeps the shop running smoothly. Engine oil capacity, including a filter replacement, is officially documented at 1.2 liters. The maintenance tables specify intake valve clearance strictly at 0.09–0.19 mm, while the general maintenance section lists the cylinder head bolt torque at a precise 40 Nm. Suspension setups are clearly outlined. Factory baseline settings position the front fork compression damping at 13 clicks out from a full turn in. Out back, the rear shock absorber spring preload is adjusted to a standard length of 228 mm. The reference provides accurate maintenance intervals and torque values for every chassis fastener, ensuring your build stays within factory tolerances.