Sym Jet 4 125 - User Manual

SYM 1. GENERAL INFORMATION/TROUBLE DIAGNOSIS
1-1
SYMBOLS AND MARKS ................... 1-1
GENERAL SAFETY........................... 1-2
SERVICE PRECAUTIONS ................ 1-3
SPECIFICATIONS............................. 1-9
TORQUE VALUES (ENGINE)..............1-10
TORQUE VALUES (FRAME) ...............1-11
TROUBLES DIAGNOSIS .....................1-12
LUBRICATION POINTS .......................1-16
SYMBOLS AND MARKS
Symbols and marks are used in this manual to indicate what and where the special service are
needed, in case supplemental information is procedures needed for these symbols and marks,
explanations will be added to the text instead of using the symbols or marks.
Warning
Means that serious injury or even death may result if procedures are not
followed.
Caution
Means that equipment damages may result if procedures are not followed.
Engine oil
Limits to use SAE 10W-30 API SH/CD class oil. Warranty will not cover the
damage that caused by not apply with the limited engine oil.
Gear oil
Limits to use SAE 85W-140 class oil. Warranty will not cover the damage
that caused by not apply with the limited gear oil.
Grease
King Mate G-3 is recommended.
Locking sealant
Apply sealant, medium strength sealant should be used unless otherwise
specified.
Oil seal
Apply with lubricant.
Renew
Replace with a new part before installation.
Brake fluid
Use recommended brake fluid DOT3 or WELLRUN brake fluid.
Special tools
Special service tools.
Correct
Meaning correct installation.
Wrong
Meaning wrong installation.
Indication
Indication of components.
Directions
Indicates position and operation directions.
Components assembly directions each other.
Indicates where the bolt installation direction, --- means that bolt cross
through the component (invisibility).

Summary

1. GENERAL INFORMATION;TROUBLE DIAGNOSIS

SYMBOLS AND MARKS

Explains symbols and marks used in the manual for service procedures.

GENERAL SAFETY

Provides essential safety precautions for operating and servicing the motorcycle.

SERVICE PRECAUTIONS

Outlines important precautions to follow during motorcycle service and maintenance.

TROUBLES DIAGNOSIS

Offers diagnostic flowcharts for troubleshooting engine and other system issues.

2. MAINTENANCE INFORMATION

PERIODICAL MAINTENANCE SCHEDULE

Schedule outlining routine maintenance tasks and intervals.

LUBRICATION SYSTEM

Details engine oil capacity, oil change, and oil strainer cleaning procedures.

AIR CLEANER

VALVE CLEARANCE INSPECTION AND ADJUSTMENT

Steps for inspecting and adjusting valve clearance.

3. LUBRICATION SYSTEM

ENGINE OIL

Procedures for checking oil level and performing oil replacement.

OIL PUMP

Details the removal, disassembly, inspection, and installation of the oil pump.

4. FUEL SYSTEM

CARBURETOR REMOVAL

5. REMOVAL OF ENGINE

ENGINE REMOVAL

Step-by-step procedure for removing the engine from the motorcycle.

6. CYLINDER HEAD;VALVE

TROUBLE SHOOTING

Troubleshooting common issues related to rough idle, low/high compression, noise, and smoke.

VALVE CLEARANCE ADJUSTMENT

7. CYLINDER;PISTON

CYLINDER REMOVAL

8. V TYPE BELT DRIVING SYSTEM;KICK STARTER ARM

MAINTENANCE DESCRIPTION

KICK STARTER ARM

9. FINAL DRIVING MECHANISM

DISASSEMBLY OF FINAL DRIVING MECHANISM

13. BRAKE SYSTEM

BRAKE CALIPER

BRAKE MASTER CYLINDER

14. STEERING;FRONT WHEEL;FRONT SHOCK ABSORBER

FRONT WHEEL

FRONT SHOCK ABSORBER

15. REAR WHEEL;SUSPENSION

REAR WHEEL

REAR SHOCK ABSORBER

16. ELECTRICAL EQUIPMENT

PRECAUTIONS IN OPERATION

TROUBLE DIAGNOSIS

Troubleshooting guides for charging, ignition, and starting system faults.

CHARGING SYSTEM

BATTERY

Sym Jet 4 125 Specifications

General

Displacement	124.6 cc
Cooling System	Air cooled
Transmission	CVT
Front Suspension	Telescopic fork
Front Brake	Disc
Rear Brake	Drum
Front Tire	120/70-12
Rear Tire	130/70-12
Starter	Electric
Length	1900 mm
Wheelbase	1330 mm
Engine Type	4-stroke
Max Torque	9.5 Nm @ 6000 rpm
Fuel Tank Capacity	7.5 L