PERIODIC MAINTENANCE AND ADJUSTMENT6-176EAU21401Valve clearanceThe valve clearance changes with use,resulting in improper air-fuel mixtureand/or engine noise. To prevent thisfrom occurring, the valve clearancemust be adjusted by a Yamaha dealerat the intervals specified in the periodicmaintenance and lubrication chart.EAU21772TiresTo maximize the performance, durabil-ity, and safe operation of your motorcy-cle, note the following points regardingthe specified tires.Tire air pressureThe tire air pressure should be checkedand, if necessary, adjusted before eachride.WARNINGEWA10501Operation of this vehicle with im-proper tire pressure may cause se-vere injury or death from loss ofcontrol. The tire air pressure must bechecked and adjusted on coldtires (i.e., when the temperatureof the tires equals the ambienttemperature). The tire air pressure must be ad-justed in accordance with theriding speed and with the totalweight of rider, passenger, car-go, and accessories approvedfor this model.WARNINGEWA10511Never overload your vehicle. Opera-tion of an overloaded vehicle couldcause an accident.Tire air pressure (measured on coldtires):0–90 kg (0–198 lb):Front:250 kPa (2.50 kgf/cm², 36 psi)Rear:290 kPa (2.90 kgf/cm², 42 psi)FZ1-S 90–190 kg (198–419 lb)FZ1-SA 90–184 kg (198–406 lb):Front:250 kPa (2.50 kgf/cm², 36 psi)Rear:290 kPa (2.90 kgf/cm², 42 psi)High-speed riding:Front:250 kPa (2.50 kgf/cm², 36 psi)Rear:290 kPa (2.90 kgf/cm², 42 psi)Maximum load*:FZ1-S 190 kg (419 lb)FZ1-SA 184 kg (406 lb)* Total weight of rider, passenger, car-go and accessories