Sym Jet 50 User Manual

2. SERVICE MAINTENANCE INFORMATION
2-1
General Information························· 2-1
Periodical Maintenance Schedule··· 2-2
Air Cleaner········································ 2-3
Fuel Lines ········································· 2-3
Fuel Filter·········································· 2-4
Engine Oil Line································· 2-4
Oil Pump Control Cable··················· 2-5
Tire····················································· 2-6
Battery··············································· 2-6
Rear Brake Free Play: (Drum Brake Type)
····························································2-7
Brake System Hose: (Front Disc Brake
Type)·················································· 2-8
Steering System······························· 2-10
Suspension····································· 2-10
Transmission Oil···························· 2-11
Spark Plug ······································ 2-11
Control Cable Lubrication ············· 2-12
Driver Belt······································· 2-12
Ignition Timing ······························· 2-12
Throttle Valve Operation················ 2-12
Carburetor Idle Speed Adjustment 2-13
Carbon Removing For Exhaust Pipe &
Muffle··············································· 2-13
Cylinder Compression Pressure Test
2-13
Headlight Adjustment ···················· 2-14
General Information
Specification
Model
Item
JET 50 JET 100
Tire dimension Front: 120 / 70 – 12, Rear: 130 / 70 - 12
Tire pressure at cold Only rider Front: 1.75kg/cm
2
Rear: 2.0 kg/cm
2
Rear brake lever free play 10~20 mm
Transmission oil / Recommendation
Type: HYPOID GEAR OIL
Oil: SAE #140 Quantity: 0.12 L Replacement: 0.11L
Spark plug / Recommendation
Type: NGK BR8 HSA
Plug gap: 0.6-0.7mm
Type: NGK BR6 HSA
Plug gap: 0.6-0.7mm
Driving belt width
Standard 18.0mm
Allowable limit: replace it if below 16.5mm
Ignition timing F mark
17 °, BTDC/1500 rpm
Acceleration operation 2~6 mm
Idle speed
2000 ±100 rpm 2100 ±100 rpm
Cylinder compression pressure
7 ±1 kgf/cm² 10 ±2 kgf/cm²
2
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Sym Jet 50 Specifications

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Brand	Sym
Model	Jet 50
Category	Scooter
Language	English