1994 Yamaha PHAZER Service and Repair Manual
The 1994 Phazer is PZ480STU in Yamaha's model coding, and LIT-12618-PZ-50 is the service manual that covers it. The same volume runs from 1990 to 1999 and includes the Phazer II and the electric-start sleds.
A manual that spans ten years has to be read with the code in hand; that is the one discipline this book asks of you. After that it is factory material throughout: inspection limits, tightening torques, carburetor and ignition settings, wiring diagrams, maintenance intervals and troubleshooting tables.
Nothing here is rewritten or summarised. It is the reference Yamaha dealers used to service these machines when they were new, and it still answers the same questions on a sled that has been through thirty winters.
Quote the part number above when confirming coverage; the Phazer name attaches to several different books.