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Sym JOYMAX 250 - Maintenance Data; Technical Specification

Sym JOYMAX 250
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17. Electrical System
17-2
Maintenance Data
Operational precaution
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 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 C.D.I assembly does not require an ignition timing check. In case ignition timing is incorrect, check
C.D.I and AC generator. Verify with an ignition timing light after replacement if necessary.
Technical Specification
Charging system
Description
Specification
Battery
Capacity
12V10Ah
Charging rate
1.2A / 5~10hr (standard)
5A / 1hr (fast charging)
Leak current
Below 1mA
Charging current
1.2A / 1500 rpm
Control voltage in charging
14.5+0.5 V / 2,000 rpm
Ignition system
Description
Specification
Spark plug
Model
NGK CR7HSA (Recommended)
Gap
0.6~0.7 mm
Ignition coil and
resistance
Primary winding
0.17±10% Ω
Secondary winding
Without cap:9 ± 20% KΩ
With cap:14.1 ± 20%
Pulse generator
480~550 Ω
Ignition timing
10° TDC / 2500 rpm F mark
26° TDC / 3500 rpm
30° TDC / 6000 rpm
16° TDC / 8300 rpm
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