Joyner JNSZ1600QL, Owner'S Manual

Page: 120 / 215

119
—— Generate signal for the RPM counter
—— Detect two missed teeth to confirm the synchronous position every engine revolution
Without the signal or the corresponding synchronous signal (60—2 signals/revolution)
，
ECU cannot be
operated.
Timing
：
Rotate the engine pulley (2) to keep cylinder 1 and cylinder 4 at TDC, i.e. the mark on the pulley (2)
and the mark (3 and 4) on the timing wheel cover of engine must be matched (see figure. 171).
Fig.171 Speed/ TDC sensor
Check if the sensor is located in the twentieth tooth after the breach in the flywheel signal panel
1— Speed/ TDC sensor (crankshaft position sensor)
2— Pulley
3— TDC reference point on the pulley
4— TDC reference point on the timing gear cover
5— synchronous tooth
Check the air gap between the sensor and flywheel
：
Magnetic thickness gauge is used for checking the air gap between the sensor and flywheel.
Measurement should be made at least at three different teeth with a equal interval of 120
°
. The value
should be 2
±
0.6mm.
A. Speed sensor signal B.ECU power signal