SANYANG INDUSTRY CO. SYM, Service Manual

Page: 22 / 176

SYM 2. MAINTENANCE INFORMATION
2-1
PRECAUTIONS IN OPERATION .......2-1
PERIODICAL MAINTENANCE
SCHEDULE ........................................2-2
LUBRICATION SYSTEM....................2-3
FUEL SYSTEM...................................2-4
AIR CLEANER....................................2-5
THROTTLE VALVE OPERATION ......2-5
CRANKCASE BLOW-BY SYSTEM ....2-6
VALVE CLEARANCE INSPECTION &
ADJUSTMENT....................................2-6
CARBURETOR IDLING SPEED
ADJUSTMENT ..................................2-7 IGNITION SYSTEM/SPARK PLUG .. 2-8
CYLINDER COMPRESSION
PRESSURE........................................ 2-9
DRIVING SYSTEM............................. 2-9
STEERING SYSTEM ......................... 2-10
SUSPENSION SYSTEM ....................2-10
FRONT DISK BRAKE SYSTEM ......... 2-11
DRUM BRAKE SYSTEM.................... 2-13
WHEEL/TIRE...................................... 2-14
BATTERY........................................... 2-15
HEADLIGHT ADJUSTMENT .............. 2-15
NUTS
、
BOLTS TIGHTEN.................. 2-15
PRECAUTIONS IN OPERATION
Specification
Fuel Tank Capacity 4.80L
capacity 800 c.c.
Engine Oil
change 650 c.c.
capacity 180 c.c.
Transmission Gear oil
change 170 c.c.
Clearance of throttle valve 2~6 mm
Spark plug A7RC Gap: 0.6~0.7 mm
“F” Mark in idling speed Before TDC 13º / 1700 rpm
Full timing advanced Before TDC 27º / 8000 rpm
Idling speed 2100±100 rpm
Cylinder compression pressure 12.6±0.2 kg/cm²
Valve clearance: IN/EX
0.05
±
0.02 mm
Tire dimension front / rear 90/80-16 51N / 90/80-16 51N
single Front: 2.00 kg/cm² rear: 2.00 kg/cm²
Tire pressure (cold)
Two persons Front: 2.00 kg/cm² rear: 2.25 kg/cm²
battery 12V6Ah (closed type, maintenance-free battery)
Play of drum brake lever 10~20 mm