Maintenance Data; Technical Specification - Sym HD 125 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
Battery
Leak current
Charging current
Control voltage in charging
Ignition system
Description
Spark plug
Ignition coil and
resistance
Ignition timing "F" mark
17-2
To this chapter contents
Capacity
Charging rate
Model
Gap
Primary winding
Secondary winding
Specification
12V8Ah
0.9A / 5 hours (standard)
4A / 1 hour (fast charging)
< 1 mA
1.2 A / 2000 rpm
14.5 + 0.5 V / 2000 rpm
Specification
NGK CR8E (Recommended)
0.6 - 0.7 mm
0.17 ± 10% Ω
Without cap: 3.1 ± 10 KΩ
With cap:8.1 ± 10 KΩ
13° TDC / 1000 rpm
27°TDC / 6000 rpm