18. Electrical System
18-2
Precautions in Operation
● When remove the battery, the disconnection sequence of cable terminals shall be strictly
observed. (First disconnect the negative cable terminal, next, the positive cable terminal.)
● The model of the spark plug and the tightening torque.
● The ignition timing.
● Adjustment of headlamp.
● Removal and installation of AC generator.
● The maintenance free battery requires no inspection of electrolyte level and refilling of distilled
water.
● To recharge the battery, remove the battery from rack without removing ventilation caps.
● Unless in emergency, never rapid charge the battery.
● The voltage must be checked with the voltmeter while charging the battery.
● As ECU does not require an ignition timing check. In case ignition timing is incorrect, check AC
generator. Verify with an ignition timing lamp after replacement if necessary.
● Starter motor should be removed after the engine being removed from the frame.
Specification
Charging system
Item Specification
Capacity 12V 8Ah
Battery
Charging rate 0.9A / 5~10hr (standard) 4A / 1hr (rapid)
Leaking current Below 5 mA
Charging current 1.2A / 1600 rpm
Charging control val. 14.5+0.5 V / 2000 rpm
Ignition system
Item Specification
Type NGK CR7E recommended)
Spark plug
Gap 0.8 mm
Resistance First winding
0.63±0.03Ω(27C)
CPS sensor resistance
120±10%Ω
10° BTDC / 1000 rpm
13° BTDC / 1600 rpm
Ignition time
24° BTDC / 6000 rpm
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