2012 Yamaha YZ450F Service and Repair Manual

The number to look for on 2012 YZ450F literature is LIT-11626-25-11. Yamaha produced it for the model coded YZ450FBL and wrote it for that year alone.

Engine coverage starts where maintenance starts, with valve clearance measurement and shim selection, and carries on through camshaft timing, cylinder head and piston service with wear limits, clutch replacement and a bottom-end rebuild. Fuel injection and ignition sections list the specified test values along with a diagnostic order.

Suspension chapters document fork and rear shock disassembly and the oil quantities, and the book includes brake, wheel and bearing procedures plus torque tables for the frame and engine hardware. Wiring diagrams and troubleshooting charts complete it.

Since these bikes have usually passed through several hands, confirm YZ450FBL on the frame sticker first. That reading, with LIT-11626-25-11, is the reliable fitment check.