2008 Yamaha WaveRunner FX SHO / FX Cruiser SHO Service Manual, Page 43Get this manual
GEN INFO
Feature and benefit
Slant detection switch When the watercraft is overturned, the slant detection switch turns on and the ECM stops the engine to protect the engineIf engine speed is less than 3,000 rmin, the engine is turned offHowever, if engine speed exceeds 3,000 rmin, the engine is not turned off to prevent improper operation of the switch