2018 Yamaha SRVIPER L-TX LE 50th Service and Repair Manual

The 50th anniversary L-TX LE from 2018 carries the code SR1NLLJW, and it is serviced out of Yamaha LIT-12618-03-49 — the same manual that covers the L-TX, the L-TX DX, the R-TX and the X-TX SE 141 from that model year.

Anniversary trim changes the look, not the shop procedure, so nothing in the book is abbreviated for it. You get engine service with torque sequences and clearance limits, fuel injection diagnosis, clutch and chaincase work, track and suspension setup, and electrical troubleshooting with complete wiring diagrams.

Where a figure differs between the five machines, the specification table names the model codes it belongs to. That is the reason to have SR1NLLJW noted down: it tells you which column is yours, and on a fuel-injected sled reading the wrong one costs time.