2008 Yamaha WaveRunner FX SHO / FX Cruiser SHO Service Manual, Page 309Get this manual
Control system
E 1Connect computer to the watercraft and use the YDIS to display the "Accelerator position sensor 1" and "Accelerator position sensor NOTE: APS and APS are single unit, which cannot be disassembled2Check that the APS pulley stopper contacts the fully closed stopper when the throttle lever is at the fully closed position