Precautions In Operation; Specification - Sym RV 250i Service Manual

17. Electrical System

Precautions in Operation

When removing 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 headlight.
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 assembly does not require an ignition timing check. In case ignition timing is incorrect, check
ECU and AC generator. Verify with an ignition timing light after replacement if necessary.

Specification

Charging system
Description
Capacity
Battery
Charging rate
Leak current
Charging current
Control voltage in charging
Ignition system
Description
Spark plug
Ignition coil and
resistance
Crankshaft position sensor resistance (20℃)
Ignition timing advance
17-2
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Model
Gap
Primary winding
Secondary winding
At idle speed
Full advanced
Specification
12V10Ah
1.2A / 5~10hr (standard) 5A / 1hr (fast charging)
Below 10mA
1.2A / 1500 rpm
14.5+0.5 V / 2,000 rpm
Specification
NGK CR8E (Recommended)
0.6~0.7 mm
2.8Ω±15%
Without cap:9 KΩ± 20%
With cap:14.1 KΩ± 20%
BTDC 10° / 1650 rpm
80~160 Ω
BTDC 30°