2003 Polaris MSX 140 Personal Watercraft Service Manual, Page 91Get this manual
Fuel Injection System NOTE: It is unlawful to tamper with any system or function of Polaris DIt model personal watercraftDo not modify any part of the watercraftDoing so may result in fine andor imprisonment
Fuel Injection SystemComponents Main Components
S EMM (Houses Engine Control Unit and Switching Regulator Board Fuel Injectors Capacitor Flywheel Stator (Magneto) Ignition Coils
Internal EMM Sensors
S Barometric Pressure Sensor EMM Temperature Sensor 45 Volt Circuit Sensor RPM Limiter ROM Verification
External EMM Sensors