Yamaha VINO 125 Service Manual Page 64
- Page / 294
- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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3-16
CHK
ADJ
1
2
1
CHECKING THE IGNITION TIMING
EAS00062
CHECKING THE IGNITION TIMING
NOTE:
Prior to checking the ignition timing, check the
wiring connections of the entire ignition system.
Make sure all connections are tight and free of
corrosion.
1. Remove:
cap 1
2. Attach:
timing light
engine tachometer
(onto the spark plug lead of cylinder)
Timing light
90890-03141 (YU-03141)
Engine tachometer
90890-03113 (YU-08036-C)
3. Check:
ignition timing
*****************************************************
a. Start the engine, warm it up for several min-
utes, and then let it run at the specified en-
gine idling speed.
Oil temperture
70~80°C
Engine idling speed
1600 ~ 1700 r/min
b. Check that the mark 1 on the magneto ro-
tor is within the firing range 2 on the crank-
case .
Incorrect firing rangeJ Check the ignition
system.
NOTE:
The ignition timing is not adjustable.
*****************************************************
4. Remove:
8timing light
8engine tachometer
5. Install:
8cap
- SERVICE MANUAL 1
- EAS00000 2
- IMPORTANT MANUAL INFORMATION 3
- HOW TO USE THIS MANUAL 4
- EAS00008 5
- TABLE OF CONTENTS 6
- GENERAL INFORMATION 8
- IMPORTANT INFORMATION 10
- CHECKING THE CONNECTIONS 11
- SPECIAL TOOLS 12
- SPECIFICATIONS 16
- SAE 10W-30 17
- SAE 10W-40 17
- SAE 20W-40 17
- SAE 20W-50 17
- ENGINE SPECIFICATIONS 18
- CHASSIS SPECIFICATIONS 26
- ELECTRICAL SPECIFICATIONS 29
- TORQUE SPECIFICATIONS 33
- TIGHTENING TORQUES 34
- BEL-RAY asembly lube 38
- OIL FLOW DIAGRAMS 40
- CABLE ROUTING 42
- INTRODUCTION 49
- EMISSION CONTROL SYSTEM 50
- EAU32121 51
- EAU17620 51
- COVER AND PANEL 52
- ADJUSTING THE VALVE CLEARANCE 55
- EAS00054 58
- EAS00057 61
- CHECKING THE SPARK PLUG 63
- CHECKING THE IGNITION TIMING 64
- EAS00067 65
- CHECKING THE ENGINE OIL LEVEL 68
- CHECKING THE ENGINE OIL 69
- CHANGING THE TRANSMISSION OIL 72
- EAS00077 73
- EAS00086 74
- EAS00091 74
- CHECKING THE CARBURETOR JOINT 76
- AND INTAKE MANIFOLD 76
- EAS00096 77
- EAS00098 77
- CHECKING THE EXHAUST SYSTEM 78
- ADJUSTING THE FRONT BRAKE/ 79
- ADJUSTING THE REAR BRAKE 79
- EAS00116 80
- CHECKING THE FRONT BRAKE HOSE 81
- BRAKE FLUID CHANGE 82
- EAS00133 84
- EAS00148 86
- CHECKING THE FRONT FORK 88
- EAS00163 89
- CHECKING THE TIRES 90
- CHECKING THE WHEELS/ 92
- LUBRICATING THE SIDESTAND/ 93
- LUBRICATING THE CENTERSTAND 93
- ELECTRICAL SYSTEM 94
- Open-circuit voltage (V) 96
- Voltmeter 99
- CHECKING THE FUSES 100
- REPLACING THE HEADLIGHT BULB 102
- ADJUSTING THE HEADLIGHT BEAMS 103
- FRONT WHEEL AND BRAKE DISC 106
- FRONT WHEEL 107
- REAR WHEEL AND REAR BRAKE 116
- FRONT BRAKE 120
- FRONT FORK 138
- HANDLEBAR 148
- STEERING HEAD 152
- REAR SHOCK ABSORBER 158
- EAS00188 162
- RemarksOrder Job/Part Q’ty 163
- EAS00192 164
- • kg, 5.1 ft • lb) 165
- • kg, 22.4 ft • lb) 165
- • kg, 7.2 ft • lb) 165
- CYLINDER HEAD 166
- THE ROCKER ARMS AND CAMSHAFT 174
- VALVES AND VALVE SPRINGS 180
- Valve stem diameter b 182
- CYLINDER AND PISTON 189
- Piston size “P” 191
- Piston pin bore diameter b 193
- Piston pin outside diameter a 193
- BELT DRIVE 196
- C.D.I. MAGNETO 211
- OIL PUMP 214
- TRANSMISSION 217
- CRANKCASE AND CRANKSHAFT 219
- CARBURETOR 227
- Starter plunger opens 234
- Perform step (3) 234
- Starter plunger closes 234
- Replace the autochoke unit 234
- AIR INDUCTION SYSTEM 236
- ELECTRICAL 239
- WIRING DIAGRAM 240
- CHECKING SWITCH CONTINUITY 242
- CHECKING THE SWITCHES 243
- CHECKING THE BULBS AND BULB 244
- IGNITION SYSTEM 247
- ELECTRIC STARTING SYSTEM 252
- CHARGING SYSTEM 262
- LIGHTING SYSTEM 265
- SIGNALING SYSTEM 271
- CARBURETOR HEATING SYSTEM 279
- CRABURETOR HEATING SYSTEM 279
- AUTO CHOKE SYSTEM 283
- TROUBLESHOOTING 288
- STARTING FAILURES/ 289
- INCORRECT ENGINE IDLING SPEED 289
- INCORRECT ENGINE IDLING 289
- FAULTY CLUTCH 290
- POOR MEDIUM-AND-HIGH-SPEED 290
- PERFORMANCE 290
- OVERHEATING 291
- POOR BRAKING PERFORMANCE 291
- FAULTY FRONT FORK LEGS 291
- UNSTABLE HANDLING/ 292
- UNSTABLE HANDLING 292
- FAULTY LIGHTING OR SIGNALING 292
- YAMAHA MOTOR TAIWAN CO., LTD 294
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