This Service Manual describes the
technical features and servicing
procedures for the KYMCO AGILITY
CITY 125
Section 1 contains the precautions for all
operations stated in this manual. Read
them carefully before starting any
operation.
Section 2 is the removal/installation
procedures for the frame covers which
are subject to higher removal/installation
frequency during maintenance and
servicing operations.
Section 3 describes the inspection/
adjustment procedures, safety rules and
service information for each part, starting
from periodic maintenance.
Sections 6 through 17 give instructions
for disassembly, assembly and inspection
of engine, chassis frame and electrical
equipment.
GENERAL INFORMATION1
FRAME COVERS/EXHAUST MUFFLER2
INSPECTION/ADJUSTMENT3
LUBRICATION SYSTEM4
Most sections start with an assembly or
system illustration and troubleshooting
for the section. The subsequent pages
give detailed procedures for the section.
Our company reserves the right to make
any alteration in the design.The
information and contents included in
this manual may be different from the
motorcycle in case specifications are
changed.
KWANG YANG MOTOR CO., LTD.
OVERSEAS SALES DEPARTMENT
OVERSEAS SERVICE SECTION
EXHAUST EMISSION CONTROL
SYSTEM
18
1. GENERAL INFORMATION
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1
ENGINE SERIAL NUMBER...................1- 1LUBRICATION POINTS .......................1-13
SPECIFICATIONS ...................................1- 2CABL E & H A R N E S S R O U T I N G............1-15
SERVICE PRECAUTIONS......................1- 3WIRING DIAGRAM................................1-20
Long socket wrench 32mm 8angleF00250306 steering stem
Oil seal & bearing installerE014Oil seal & bearing install
Tool booxE033Special tools storage
Tappet adjusterE03690012 screw tappet3-5
Valve spring compressorE038Valve spring
F00452400 cushion assy13-4
9-5
31110 fl
driven
wheel comp.2310a pully ass
9-9
9-13
14-7
14-9
14-7
12-21
12-22
7-7
7-8
1-12
1. GENERAL INFORMATION
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LUBRICATION POINTS
ENGINE
Lubrication PointsLubricant
AGILITY CITY 125
Valve guide/valve stem movable part
Cam lobes
Valve rocker arm friction surface
Cam chain
Cylinder lock bolt and nut
Piston surroundings and piston ring grooves
Piston pin surroundings
Cylinder inside wall
Connecting rod/piston pin hole
Connecting rod big end
Crankshaft R/L side oil seal
Starter reduction gear engaging part
Countershaft gear engaging part
Final gear engaging part
Bearing movable part
O-ring face
Oil seal lip
Starter idle gear
Friction spring movable part/shaft movable part
Shaft movable grooved part
Kick starter spindle movable part
A.C. generator connector
Transmission case breather tube
High-temperature resistant grease
Adhesive
1-13
1. GENERAL INFORMATION
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FRAME
The following is the lubrication points for the frame.
Use general purpose grease for parts not listed.
Apply clean engine oil or grease to cables and movable parts not specified.
This will avoid abnormal noise and rise the durability of the motorcycle.
Grease
Front Brake Leve
Pivot
Engine/ Oil
Front Brake Cable
Speedometer Cable/
Throttle Cable
AGILITY CITY 125
Grease
Speedometer Gear/ Front Wheel
Bearings/ Brake Cam/ Anchor Pin
/Front Shock Absorber Lower
Mount Bushings/Pivot
Grease
Main Stand Pivot
Grease
Rear Wheel Bearings
Grease
Brake Cam
Anchor Pin
Engine Oil
Rear Brake Cable
1-14
1. GENERAL INFORMATION
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CABLE & HARNESS ROUTING
Brake Master Cylinde
AGILITY CITY 125
Front Stop Switch Wire
Throttle Cable
Ignition Switch
Front Brake Fluid Tube
Rear Stop Switch Wire
Rear Brake Cable
Speedometer Cable
Horn
Speedomete
Winke
1-15
1. GENERAL INFORMATION
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AGILITY CITY 125
Throttle Grip
Headlight Resisto
Ignition Switch
Regulator/Rectifie
Rear Brake Leve
Horn
Front Brake Fluid Tube
Speedometer Cable
1-16
1. GENERAL INFORMATION
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Battery (-) Cable
AGILITY CITY 125
Fuse
CDI Unit
Starter Relay
Battery (+) Cable
Fuel Tan
Ignition Coil
1-17
1. GENERAL INFORMATION
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AGILITY CITY 125
Fuel Tube
Auto Cock Assy Fuel
Throttle Cable
Fuel Filte
Carbureto
Overflow Tube
Crankcase Breathe
Tube
Ignition Coil
Primary Wire
1-18
1. GENERAL INFORMATION
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Fuel Unit
Throttle Cable
AGILITY CITY 125
Crankcase Breathe
Tube
Wire
Secondary Ai
Inlet Tube
Ignition Coil
Reed Valve
Air Injection
Cut-off
Valve
Vacuum Tube
Crankcase Breathe
Tube
Vacuum Tube
Fuel Tube
Auto Bystarte
1-19
1. GENERAL INFORMATION
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WIRING DIAGRAM
AGILITY CITY 125
1-20
1. GENERAL INFORMATION
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TROUBLESHOOTING
ENGINE WILL NOT START OR IS HARD TO START
AGILITY CITY 125
Inspection/Adjustment
Check if fuel reaches
carburetor by loosening
drain screw
Remove spark plug and
install it into spark plug
cap to test spark by
connecting it to engine
ground
Test cylinde
compression
Start engine by following normal starting
rocedure
Fuel reaches
carburetor
Spark jumps
Normal
compression
Symptom
Fuel does no
reach carburetor
Weak or no spark
Low or no
compression
Probable Cause
Empty fuel tank
Clogged fuel line between fuel
tank and carburetor
Clogged float oil passage
Clogged fuel tank cap breather
hole
Clogged fuel filter
Clogged fuel strainer
Faulty auto fuel
Faulty spark plug
Fouled spark plug
Faulty CDI unit
Faulty pulser coil
Broken or shorted ignition coil
Broken or shorted high-tension
wire
Faulty ignition switch
Faulty starter clutch
Valve clearance too small
Improper valve and seat contact
Worn cylinder, piston and piston
rings
Leaking cylinder head gasket
Seized valve
Improper valve timing
valve
Remove spark plug and
inspect again
Engine does no
fire
Dry spark plug
Engine fires bu
does not start
Wet spark plug
Faulty auto bystarter
Air leaking through intake pipe
Incorrect ignition timing
Incorrectly adjusted pilot screw
Flooded carburetor
Faulty auto bystarter
Throttle valve excessively open
1-21
1. GENERAL INFORMATION
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ENGINE LACKS POWER
AGILITY CITY 125
Inspection/Adjustment
Start engine and accelerate
lightly for observation
Check ignition timing
using a timing light
Check valve clearance
Test cylinder compression
Check carburetor fo
clogging
Engine speed
Correct timin
Correc
ormal
com
ression
Symptom
Engine speed does no
increase sufficientl
Abnormal
compression
Incorrect timin
Incorrec
Probable Cause
Clogged air cleaner
Poor quality fuel (Restricted)
Clogged fuel tank cap breather hole
Clogged exhaust muffler
Faulty auto bystarter
Split carburetor vacuum piston
diaphragm
Faulty auto fuel valve