Ignition System - Yamaha YZF-R6 99 Service Manual

Flow control operation
1) When valve is closed
The lip 1 seals the coolant.
2) When valve is set as low-lift
The 2nd lip 2 seals the coolant.
To reduce the water temperature change,
the coolant starts flowing through the notch
depending on its area at a section.
3) When the valve is set as middle-lift
The 3rd lip 3 seals the coolant.
The coolant flows through the notch depend-
ing on its area at b section.
This flow rate is larger than the case of 2).
4) When the valve is set as high-lift
In the same way as the regular thermostat
control, the coolant flows through clearance
c between the valve and flange.

IGNITION SYSTEM

1. DC CDI
1) Features
* Battery is used as the power source.
* Stabilized spark performance is provided in the range from a low speed to high speed since the
battery is used as the power source.
* Compact AC magneto design is possible since the source coil is unnecessary.
* Compact ignition coil design is possible since the condenser stores electricity.
Plug top ignition coil is equipped in which the plug cap and ignition coil are integrated.
* Stator coil can supply power even if the battery is running out.
2) Circuit diagram
1 CDI unit 5 Spark plug
2 Voltage converter 6 Ignition timing controller
3 Condenser 7 Pickup coil
4 Ignition coil 8 T. P. S.
FEATURES
1)
3)
9 Speed sensor
Battery
10
Rectifier/ regulator
11
AC magneto
12
1-6
GEN
INFO
2)
4)
Stator coil
13