The 1998 V Max 600 SX, code VX600SXB, is served by Yamaha manual LIT-12618-VM-T1.
That number spans 1998 to 2001 and a dozen other machines: V Max 500 Deluxe (Elec. Start), 500 XTR (Elec. Start + Reverse), 600 SXS (OHLINS Shocks), 600 XTC Deluxe (Elec. Start), 600 XTR (Elec. Start + Reverse), V Max 700, 700 SXS (OHLINS Shocks), 700 XT, 700 XTC, 700 XTC Deluxe (Elec. Start), 700 XTCP (Plastic Ski, 1.5 Track) and VENTURE 700.
What that gives an owner is context. If a part or a setting was carried across the family, the book shows it, and if the SX was set up differently, the callout next to the specification says as much. Suspension, clutch and track data sit in the same volume as the engine work.
