A year later the part number changes. For the 2019 L-TX DX, model code SW1NLDKS, the factory manual is LIT-12618-03-55, and that volume covers the 2019 Sidewinder lineup: the B-TX LE 153, L-TX LE, L-TX SE, M-TX LE 162, SRX LE, X-TX LE 141 and X-TX SE 141.
Do not substitute the 2018 book. Yamaha issued a separate manual for 2019 because specifications and procedures moved on, and the part numbers are the clearest way to keep the two apart.
Coverage is complete for the sled: periodic maintenance and adjustment, engine overhaul with clearance and torque data, turbo and fuel-system procedures, electrical system testing, clutch and secondary setup, front and rear suspension, track tension, brakes, steering, wiring diagrams and symptom-based troubleshooting.
