Operation Manual
21 
11.  WHEN THERE IS AN ABNORMAL CONDITION OR A TROUBLE 
§DIAGNOSIS WHEN ENGINE DOES NOT START  § 
(1). Has the ignition switch key 
been turned to the “ON” 
position? 
(2). Is there enough fuel in the fuel 
tank? 
(3). Is the rear or front wheel 
brakes applied when 
pressing starting button? 
(4). Do you rotate the throttle valve handle while 
pressing starting the button? 
(5). Turn the ignition switch key to the “ON” 
position, and press horn button down, if the 
horn does not sound, the fuse may have been 
blown. 
【Have your scooter checked by SYM authorized dealer or franchised dealer immediately if there are no 
problems with the above items and engine still can not be started.】 
12.  C.D.I. ELECTRICL IGNITION SYSTEM 
The charge and discharge principle of a condenser is adopted for the C.D.I system to supply electrical energy 
created by generator’s coil, to the ignition coil in accordance with specified ignition timing so that the spark plug 
may generate sparks as required. 
13.  SUGGESTIONS ON ENGINE FUEL 
  This scooter is designed to use UNLEADED gasoline of Octane No. 90 or higher. 
  If the scooter is operated in high attitude (where the atmosphere pressure is lower), it is suggested that 
the air/fuel ratio should be readjusted to maximize the engine performance. 
14.  TRANSMISSION OIL   
  Recommended OIL: GENUINE SYM HYPOID GEAR OIL (SAE 85W-140) 
1/4 
1/8 
Turn Signal 
Switch 
Horn Switch
For rear wheel 
For front wheel 










