Yamaha F200C Service Manual page 21

Ignition and fuel injection timing
This engine adopted the group injection system that the fuel required for one combustion is injected
twice per one cycle.
Therefore, the injector driving circuits can be integrated to 3 circuits and a simpler electrical struc-
ture is obtained.
Firing order : #1, #2, #3, #4, #5, #6
Injection order : #1 and #4 → #2 and #5 → #3 and #6 (group injection)
Crankshaft angle
Cylinder
Compression
Cylinder #1
Ignition
Injection
Intake
Cylinder #2
Ignition
Injection
Cylinder #3
Ignition
Injection
Exhaust
Cylinder #4
Ignition
Injection
Cylinder #5 Combustion
Ignition
Injection
Cylinder #6
Ignition
Injection
69J1D11
180˚
120˚
TDC Combustion
Compression
TDC
Intake
Compression
Intake
Exhaust
Combustion Exhaust
Features and benefits
720˚
Exhaust
Combustion Exhaust
Combustion
TDC
Compression Combustion
TDC
Compression
Intake
Intake
: Ignition spark
: Wasted spark
Intake
Exhaust
TDC
Compression
S60L1190
1-16
1
2
3
4
5
6
7
8
9