Preparatory Standard 
Item Specification 
Battery 
Capacity/type 12V dry-charged type 
Voltage  
(20) 
Fully recharged  13.1V 
Must be recharged  12.3V(not work for one hour) 
Recharging current  Standard: 0.9A, Quick: 9A 
Recharging time  Standard: 10-15hours; Quick: 30minutes 
Magneto 
Max. capacity  120W 
Coil impedance value(20) White-white 0.5-10Ω 
Voltage regulator 
Type Full-wave rectification 
Battery recharging voltage  14.5V±0.4V/5.000rpm 
 
Tightening torque                   Tools 
Rectifier bolt  5.0 N·m   Universal non-adjustable spanner 
High-voltage coil mounting bolt   9.0 N·m            Flywheel remover 
Flywheel locknut                      5.0 N·m            Testing device 
Vehicle block protecting plate bolt  9.0 N·m            Multimeter 
 
1.2 Fault Diagnosis 
No power        Unstable power 
Battery over discharged           Lead wire of battery is poorly contacted. 
Lead wire of battery is not connected.              Discharging system is of poor contact. 
Fuse is broken.          Lighting system is of poor contact or short circuit. 
Power switch is poorly contacted. 
Low voltage       Poor charging system  
Battery is poorly recharged.           Wire connector is of poor contact, short circuit or short line. 
Poor contact.     Defective voltage and current adjuster 
Poor charging system   Magneto does not work well. 
Bad voltage and current adjuster