Maintenance Data; Technical Specification - Sym GTS 250 Service Manual

17. Electrical System

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
Capacity
Battery
Charging rate
Leak current
Charging current
Control voltage in charging
Ignition system
Description
Spark plug
Ignition coil and
resistance
Pulse generator
Ignition timing
17-2
To this chapter contents
Model
Gap
Primary winding
Secondary winding
10° TDC / 2500 rpm
26° TDC / 3500 rpm
30° TDC / 6000 rpm
16° TDC / 8300 rpm
Specification
12V10Ah
1.2A / 10hr (standard)
17A / 0.5hr (fast charging)
Below 1mA
1.2A / 1500 rpm
14.5+0.5 V / 2,000 rpm
Specification
NGK CR7HSA (Recommended)
0.6~0.7 mm
0.17±10% Ω
Without cap:9 ± 20% KΩ
With cap:14.1 ± 20% KΩ
480~550 Ω
"F" mark