Yamaha WaveRunner FX140 Service Manual page 29

Normal mode
Except for the controls mentioned earlier, fuel injection is normal sequential injection.
Basic ignition timing and each correction value control ignition timing.
Injector #1
Injector #2
Injector #3
Injector #4
SGG
#4
REF
#2
REF
BTDC 70˚ BTDC 70˚ BTDC 70˚
Injection
Stopped
Injection
Stopped
Injection
Stopped
Injection
Stopped
#1
#3 #2
BTDC 70˚ BTDC 70˚ BTDC 70˚
Fig. 24
22
#4 #1
#3
BTDC 70˚ BTDC 70˚