
SERVICE MANUAL
Fiddle II 125 – AW12W

SYM FORWARD
This service manual contains the technical data of each component
inspection and repair for the SYM series motorcycle. The manual is shown
with illustrations and focused on 「Service Procedures」, 「Operation Key
Points」 , and 「Inspection Adjustment」 so that provides technician with service
guidelines.
If the style and construction of the motorcycle are different from that of the
photos, pictures shown in this manual, the actual vehicle shall prevail.
Specifications are subject to change without notice.
This manual that contains all data, illustration, indication and specifications
is based on current production information. SYM reserves the right to make
changes at any time without notice and without incurring any obligation
whatever. No part of this manual can be duplicated by any means without
written permission of SANYANG.
SERVICE DEPARTMENT
SAN YANG INDUSTRY CO., LTD.

HOW TO USE THIS MANUAL SYM
This service manual describes basic information of different system parts and
system inspection & service for SYM series motorcycles. In addition, please
refer to the manual contents in detailed for the model you serviced in
inspection and adjustment.
The first chapter covers general information and trouble diagnosis.
The second chapter covers service maintenance.
The third to the eleventh chapters cover engine and driving systems.
The twelfth to fifteenth chapters are contained the parts set of assembly
body.
The sixteenth chapter is electrical equipment.
The seventh chapter is for wiring diagram.
Please see index of content for quick having the special parts and system
information.

SYM CONTENTS
CONTENTS
GENERAL INFORMATION/TROUBLE DIAGNOSIS ................................... 1
MAINTENANCE INFORMATION ................................................................. 2
LUBRICATION SYSTEM .............................................................................. 3
FUEL SYSTEM ............................................................................................. 4
ENGINE REMOVAL...................................................................................... 5
CYLINDER HEAD/VALVE ............................................................................ 6
CYLINDER/PISTON...................................................................................... 7
"V" TYPE BELT DRIVING SYSTEM/KICK STARTER ARM ....................... 8
FINAL DRIVING MECHANISM..................................................................... 9
A.C. GENERATOR/STARTING CLUTCH .................................................... 10
CRANKCASE/CRANKSHAFT ..................................................................... 11
BODY COVER .............................................................................................. 12
BRAKE SYSTEM .......................................................................................... 13
STEERING/FRONT WHEEL/FRONT SHOCK ABSORBER ........................ 14
REAR WHEEL/SUSPENSION...................................................................... 15
ELECTRICAL EQUIPMENT ......................................................................... 16
ELECTRICAL DIAGRAM ............................................................................. 17

MECHANISM ILLUSTRATIONS SYM
Light/starter switch
Front disk brake
Exhaust muffler
Ignition switch
Gear oil draining
bolt
Battery/Fuse/CDI
Front brake lever
Rear brake lever
Air cleaner
Gear oil filling
bolt
Oil level
Tail light
Front turn
signal light
Fuel tank / Fuel unit
High&Low beam/Seat
open/turn signal/horn
Head light/
Position light
Rear turn
signal light
Engine number/engine
oil draining bolt
Ignition coil
Frame number
Meter
A.C. Generator
Start magnetic switch
Horn/REG.REC
RR. turning
signal light
Tail light
Front turn
signal light
Winker relay
Engine control
switch

SPECIAL TOOL
1
ITEM: R/L CRANKCASE DISASSEMBLE TOOL
NO:SYM-1120100
PURPOSE: DISASSEMBLE CRANKCASE
ITEM: CRANK PULLER
NO:SYM-1130000
PURPOSE: INSTALL CRANKCASE
ITEM: OUTER BEARING PULLER
NO:SYM-6204010
PURPOSE: REMOVE THE BEARING
ITEM: ACG FLYWHEEL PULLER
NO:SYM-3110A00
PURPOSE: REMOVE ACG FLYWHEEL
ITEM: LOCK NUT PULLER
NO:SYM-9020100
PURPOSE: REMOVE THE LOCK NUT
ITEM: UNIVERSAL HOLDER
NO:SYM-2210100
PURPOSE:HOLD THE MDF/CLUTCH OUTER

SPECIAL TOOL
2
ITEM: CLUTCHSPRING COMPRESSOR
NO:SYM-2301000
PURPOSE:DISASSEMBLE THE CLUTCH
ITEM: CLUTCH NUT WRENCH
NO:SYM-9020200
PURPOSE:LOOSE THE CLUTCH NUT
ITEM: GY6 STARTER GEAR PULLER
NO:SYM-2822100-GY6
PURPOSE:REMOVE THE STARTER GEAR

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.
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).

1. GENERAL INFORMATION/TROUBLE DIAGNOSIS SYM
1-2
GENERAL SAFETY
Carbon monoxide
If you must run your engine, ensure the place is
well ventilated. Never run your engine in a
closed area. Run your engine in an open area, if
you have to run your engine in a closed area, be
sure to use an extractor.
Caution
Gasoline
Gasoline is a low ignition point and explosive
material. Work in a well-ventilated place, no
flame or spark should be allowed in the work
place or where gasoline is being stored.
Caution
Used engine oil
Caution
Hot components
Caution
Battery
Caution
Brake shoe
Do not use an compressed air or a dry brush to
clean components of the brake system, use a
vacuum cleaner or the equivalent to avoid
asbestos dust flying.
Caution
Brake fluid
Caution
Exhaust contains toxic gas which may cause
one to lose consciousness and even result in
death.
y Battery emits explosive gases; flame is
strictly prohibited. Keep the place well
ventilated when charging the battery.
y Battery contains sulfuric acid (electrolyte)
which can cause serious burns so be careful
do not be spray on your eyes or skin. If you
get battery acid on your skin, flush it off
immediately with water. If you get battery
acid in your eyes, flush it off immediately
with water, then go to hospital to see an
ophthalmologist.
y If you swallow it by mistake, drink a lot of
water or milk, and take some laxative such
as castor oil or vegetable oil, and then go to
see a doctor.
y Keep electrolyte beyond reach of children.
Gasoline is highly flammable, and may explode
under some conditions, keep it away from
children.
Prolonged contact with used engine oil (or
transmission oil) may cause skin cancer
although it might not be verdict.
Inhaling asbestos dust may cause disorders
and cancer of the breathing system.
Spilling brake fluid on painted, plastic, or rubber
parts may cause damage to the parts. Place a
clean towel on the above-mentioned parts for
protection when servicing the brake system.
Keep brake fluid beyond reach of children.
Components of the engine and exhaust system
can become extremely hot after engine running.
They remain very hot even after the engine has
been stopped for some time. When performing
service work on these parts, wear insulated
gloves and wait until cooling off.

SYM 1. GENERAL INFORMATION/TROUBLE DIAGNOSIS
1-3
SERVICE PRECAUTIONS
y Always use with SANYANG genuine parts
and recommended oils. Using non-designed
parts for SANYANG motorcycle may damage
the motorcycle.
y Special tools are designed for remove and
install of components without damaging the
parts being worked on. Using wrong tools
may result in parts damaged.
y When servicing this motorcycle, use only
metric tools. Metric bolts, nuts, and screws
are not interchangeable with the English
system, using wrong tools and fasteners may
damage this vehicle.
y Clean the outside of the parts or the cover
before removing it from the motorcycle.
Otherwise, dirt and deposit accumulated on
the part's surface may fall into the engine,
chassis, or brake system to cause a damage.
y Wash and clean parts with high ignition point
solvent, and blow dry with compressed air.
Pay special attention to O-rings or oil seals
because most cleaning agents have an
adverse effect on them.
y Never bend or twist a control cable to prevent
stiff control and premature worn out.
y Rubber parts may become deteriorated when
old, and prone to be damaged by solvent and
oil. Check these parts before installation to
make sure that they are in good condition,
replace if necessary.
y When loosening a component which has
different sized fasteners, operate with a
diagonal pattern and work from inside out.
Loosen the small fasteners first. If the bigger
ones are loosen first, small fasteners may
receive too much stress.
y Store complex components such as
transmission parts in the proper assemble
order and tie them together with a wire for
ease of installation later.
y Note the reassemble position of the important
components before disassembling them to
ensure they will be reassembled in correct
dimensions (depth, distance or position).
y Components not to be reused should be
replaced when disassembled including
gaskets metal seal rings, O-rings, oil seals,
snap rings, and split pins.
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SYM FIDDLE II 125 Scooter Workshop Repair Manual
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The SYM FIDDLE II 125 Scooter Workshop Manual is a comprehensive guide containing all the necessary information for repairing, maintaining, and rebuilding your vehicle. It is an invaluable resource for both professional technicians and DIY enthusiasts.
- All repair procedures are meticulously covered from A-Z.
- The manual features high-quality photos, illustrations, and diagrams to aid in the repair process.
- It is designed to help you save significantly on service and repair costs.
This Workshop Repair Manual allows you to easily view and print the complete repair procedures without requiring advanced computer skills. Say goodbye to cumbersome and worn-out manuals, as you can simply print the relevant information and commence the work.
For computer requirements, the manual operates on Microsoft Windows 95, 98, 98SE, 2000, NT, ME, XP, Vista, and Windows 7. It is also compatible with all Mac computers.