HYOSUNG GF125 User manual

HYOSUNG MOTORS & MACHINERY INC.
SERVICE MANUAL
SERVICE MANUAL
99000-94200
GF125
GF125

FOREWORD
               












 
HYOSUNG MOTORS & MACHINERY INC.

GROUP INDEX
GENERAL INFORMATION 1
PERIODIC MAINTENANCE AND
TUNE-UP PROCEDURES 2
SERVICING ENGINE 3
FUEL AND LUBRICATION SYSTEM 4
ELECTRICAL SYSTEM 5
CHASSIS 6
SERVICING INFORMATION 7

GENERAL INFORMATION
SERIAL NUMBER LOCATIONS 1-1
FUEL AND OIL RECOMMENDATIONS 1-1
BREAK-IN PROCEDURE 1-1
SPECIAL FEATURES 1-2
SPECIAL MATERIALS 1-6
PRECAUTIONS AND GENERAL INSTRUCTIONS 1-8
SPECIFICATIONS 1-9
CONTENTS 1

1-1 GENERAL INFORMATION
SERIAL NUMBER LOCATIONS
 
 



BREAK-IN PROCEDURE
       


      
       


ENGINE OIL
         
          
         

FRONT-FORK OIL
FUEL AND OIL
RECOMMENDATIONS
FUEL
        

NOTE:
Unleaded and low-lead gasoline will extend spark
plug life.







 
        


 



























GENERAL INFORMATION 1-2
SPECIAL FEATURES
GF 125         

1. IMPROVEMENT OF ENGINE POWER AT MIDDLE AND LOW SPEEDS
 
           

2. LESS VIBRATION AND NOISE
             
     



3. COMFORTABLE SEATING


THE TECHINICAL FEATURES
1. CYLINDER HEAD




2. PISTON, CONNECTING ROD and CAM CHAIN






1-3 GENERAL INFORMATION
3. CLUTCH MISSION


4. VALVE TRAIN






5. CAM SHAFT, LOCK ARM and VALVE


    
        

      

        



       
   







GENERAL INFORMATION 1-4
IGNITION SYSTEM
DESCRIPTION



ADVANTAGES OF CAPACITOR DISCHARGE IGNITION SYSTEM
�
�
�
�
OPERATION



                     
  




 



 




P1P2
D1C1
SCR
lg1lg2


  





1-5 GENERAL INFORMATION
P2
P2
N2N1
P2
P2P1
P1
P1
(B.T.D.C.)
P1
Θ1
Θ2
Θ2
Θ2
③
②
①
360�









