2-4
2
Basic ignition timing control
The ignition signals are output for the ignition timing that has been programmed according to the
engine speed.
Normally, the ignition timing is controlled so that it is between BTDC 6 degrees and BTDC 26
degrees.
In addition, this ignition timing is controlled when the engine is started, during acceleration, and
according to the engine cooling water temperature.
a
Ignition timing (BTDC)
b
Engine speed (r/min)
Starting ignition timing control
When the engine is started, the ignition timing is set to BTDC 10 degrees for 3 seconds.
0
0
1000
1500
2000
2500
3000
3500
4000
4500
5000
5500
6200
5
10
15
20
25
30
a
b
Control-starting condition
Control time
Ignition timing
Engine speed is 150 r/min or
more for 0.5 second
3 seconds
BTDC 10 degrees
Содержание Kingfish 25
Страница 1: ...YAMAHA MOTOR CO LTD F4A F4 Goldfish 4 Kingfish 25 SERVICE MANUAL...
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Страница 20: ...0 15 GEN INFO General information MEMO...
Страница 45: ...1 25 SPEC Specification MEMO...
Страница 65: ...2 19 TECH FEA Technical features and description MEMO...
Страница 81: ...3 17 RIG GING Rigging information MEMO...
Страница 215: ...7 67 POWR Power unit MEMO...
Страница 229: ...LOWR Lower unit 8 11 0 A...
Страница 242: ...8 24 8 Shimming Shim location T1 T2 T3 T3 A3 B3 42 5 T1 T2 24 0 24 0 B2 A1 A2 B1 Drive shaft and lower case Shimming...
Страница 259: ...LOWR Lower unit 8 41 5 Install new O rings C and D Ball bearing attachment B 90890 06633 A G B C D...
Страница 392: ...A Appendix Wiring diagram A 1 How to use the wiring diagram A 1...
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