2004 Yamaha PW50 Service and Repair Manual

On a 2004 PW50 the code reads PW50S1, and the matching Yamaha service reference is LIT-11626-17-34.

Yamaha issued a fresh part number for this model almost every season, so the pairing of code and part number is how you know you are in the right volume. This one covers 2004 and nothing beyond it.

Practical content runs throughout: fastener torque values, clearances and adjustment figures given as measurements rather than descriptions, the order in which each assembly comes apart and goes back together, wiring diagrams for the electrical circuits, and troubleshooting sections organised by symptom so a fault can be narrowed down methodically.

Check the stamping on the machine before you start. If it is PW50S1, then LIT-11626-17-34 holds the factory specifications written for it, which is what you want when a setting has to be right.