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EuroMX 125
Sym EuroMX 125 User Manual
193 pages
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SER
VICE MANU
AL
FORW
ARD
CONTENTS
HOW TO USE THIS MANUAL
MECHANISM ILLUSTRA
TIONS
2
Table of Contents
Page Content Index
4
Service Manual
1
Table of Contents
4
General Safety
7
Service Precautions
8
Specifications
14
Torque Values (Engine)
15
Standard Torque Values for Reference
16
Torque Values (Frame)
16
Troubles Diagnosis
17
Parts to be Greased
21
2. Maintenance Information
22
Periodical Maintenance Schedule
23
Lubrication System
24
Fuel System
25
Gear Oil
25
Air Cleaner
26
Throttle Valve Operation
26
Crankcase Ventilation
27
Valve Clearance Adjustment
27
Carburetor Idle Speed Adjustment
28
Valve Clearance Inspection and Adjustment
28
Ignition System
29
Spark Plug
29
Cylinder Compression Pressure
30
Driving System
30
Steering System
31
Suspension System
31
Disk Brake System (Front Disk Brake)
32
Drum Brake System
34
Wheel / Tire
35
Battery
36
Headlamp Adjustment
36
Nuts, Bolts Tighteness
36
Special Service Tools Catalogue
37
3. Lubrication System
40
Operational Precautions
41
Trouble Diagnosis
41
Cleaning Engine Oil Strainer
42
Engine Oil
42
Oil Pump Disassembly
43
Oil Pump Removal
43
Oil Pump Inspection
44
Oil Pump Re-Assembly
44
Oil Pump Installation
45
Gear Oil
46
4. Fuel Injection System
48
Fuel Injection System
49
Precautions in Operation
49
Trouble Diagnosis
50
Carburetor Removal
51
Air Cut-Off Valve
53
Auto By-Starter
54
Float Chamber
55
Idle Speed Adjustment
56
Installation of Carburetor
56
Fuel Tank
57
Air Cleaner
60
Engine Removal
63
6. Cylinder Head/Valve
72
Cylinder Head / Valve
72
Precautions in Operation
73
Troubleshooting
74
Cylinder Head Removal
75
Cylinder Head Disassembly
77
Cylinder Head Inspection
78
Valve Stem Replacement
80
Valve Seat Inspection and Service
81
Cylinder Head Reassembly
83
Cylinder Head Installation
85
Valve Clearance Adjustment
87
Cylinder / Piston
88
Precautions in Operation
89
Trouble Diagnosis
89
Cylinder Removal
90
Cylinder Inspection
91
Piston Inspection
92
Piston Removal
92
Piston Ring Installation
94
Cylinder Installation
95
Piston Installation
95
8. V-Belt Driving System/Foot Starter
96
Maintenance Description
97
Trouble Diagnosis
97
Foot Starter
98
Drive Belt
99
Movable Drive Face
101
Clutch / Driven Pulley
104
Left Crankcase Cover
98
9. Final Driving Mechanism
110
Final Driving Mechanism
110
Operational Precautions
111
Trouble Diagnosis
111
Final Driving Mechanism
111
Disassembly of Final Driving Mechanism
112
Inspection of Final Driving Mechanism
112
Bearing Replacement
113
Re-Assembly of Final Driving Mechanism
115
10. Alternator/Starting Clutch
116
Alternator / Starting Clutch
116
Precautions in Operation
117
Alternator Removal
118
Alternator Coil Set Removal
119
Right Crankcase Cover Removal
119
Starting Clutch
120
Right Crankcase Cover Installation
123
Mounted Coil Set Installation
123
Flywheel Installation
123
11. Crankcase/Crankshaft
126
Crankcase/Crankshaft
126
Operational Precautions
127
Trouble Diagnosis
127
Disassembly of Crankcase
128
Crankshaft Inspection
129
Assembly of Crankcase
130
Home Page 12. Body Cover
132
Maintenance Information
133
Front Cover
134
Handlebar Cover
135
Front Fender
136
Front under Spoiler
137
Center Cover
139
Luggage Box
139
Rear Carrier
140
12. Body Cover
141
Left & Right Side-Covers
142
Left & Right Side-Foot Plates
142
Floor Panel
143
Rear Fender
144
13. Brake
146
Brake System
146
Rear Drum Brake System
147
Precautions in Operation
148
Trouble Diagnosis
149
Hydraulic Brake System Inspection
150
Brake Fluid Replacement/Air-Bleed
151
Brake Caliper
152
Brake Disc
153
Brake Master Cylinder
153
Drum Brake System Inspection
156
14. Steering/Front Wheel/Front Shock Absorber
158
Precautions in Operation
159
Trouble Diagnosis
159
Steering Handlebar
160
Front Wheel
161
Front Fork/Steering Column
164
Front Shock Absorber
164
15. Rear Wheel / Rear Shock Absorber
166
Precautions in Operation
167
Trouble Diagnosis
167
Exhaust Muffler
168
Rear Wheel
168
Rear Shock Absorber
169
16. Electrical Equipment
170
Electrical Equipment
170
Precautions in Operation
171
Specification
172
Battery
173
Trouble Diagnosis
173
Charging System
174
Ignition System
178
Starting System
181
Meter
183
Light / Light Bulb
185
Switch / Horn
187
Wiring Diagram
192
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Sym EuroMX 125 Specifications
General
Displacement
124.6 cc
Front Suspension
Telescopic Fork
Front Brake
Disc
Rear Brake
Drum
Transmission
Automatic CVT
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