9-7
Cylinder Head / Valve
Inspect the spark plug assembly hole and the
crack of near valve seat. Check for the warp of
the cylinder head with a square and filler
gauge.
Service Limit : 0.1mm(0.004in)
Valve Spring
Measure the free field of valve spring.
Service Limit : 40.0mm(1.57in)
If any valve spring is shorter than the service
limit, it must be replaced as a set.
Valve Step-To-Guide Clearance
Inspect the bent, clogging, damaging, and step
wear of valve.
Check the valve step with valve guide.
Measure the valve step outside diameter and
record it.
Service Limit : IN) 4.925mm(0.1939in)
EX) 4.905mm(0.1931in)
After inserting the valve guide reamer to the
combustion chamber, remove the carbon
deposits.
The incoming and outgoing of reamer should
be performed by turning the reamer to the
right. If the entrance of reamer without turning
or turing to the left, the guide inside will be
damaged.
Tool: Valve guide reamer
Measure the valve guide inside diameter and
record it.
Service Limit : 5.03mm(0.198 in)
Calculate the valve step and guide clearance.
Service Limit : IN) 0.08mm (0.003 in)
EX) 0.10mm (0.004 in)
Measure the inside diameter of new valve
guide, and must be replaced with the new
valve if the clearance is not in service limit.
!
CAUTION
!
CAUTION
Summary of Contents for DAYSTAR VL125E
Page 12: ...1 11 General Information...
Page 13: ...1 12 General Information...
Page 14: ...1 13 General Information...
Page 15: ...MEMO...
Page 23: ...MEMO...
Page 39: ...Fuel System 4 0...
Page 91: ...MEMO...
Page 96: ...MEMO...
Page 97: ...7 0 Clutch Gearshift...
Page 110: ...MEMO...
Page 111: ...8 0 A C Generator Starter Clutch...
Page 120: ...MEMO...
Page 121: ...9 0 Cylinder Head Valve...
Page 138: ...MEMO...
Page 139: ...10 0 Cylinder Piston...
Page 147: ...11 0 Crank Case Transmission Crankshaft 1 2kgf m 12N m 1 1kgf m 11N m...
Page 159: ...12 0 MEMO...
Page 166: ...13 5 MEMO...
Page 167: ...14 0 Front Wheel Front Fork Steering...
Page 189: ...15 0 Rear Wheel Rear Brake Suspension...
Page 201: ...16 0 Hydraulic Brake...
Page 213: ...17 0 Charging System Battery Regulator Rectifier Fuse Battery AC Generator...
Page 221: ...18 0 Ignition System A C Generator Spark Plug Ignition Coil ECU...
Page 226: ...18 5 Ignition System...
Page 227: ...18 6 MEMO...
Page 228: ...19 0 Electric Starter Starter Motor Battery Starter Magnetic Switch...
Page 235: ...MEMO...
Page 236: ...20 0 SERVICE Lights Switches Horn...
Page 247: ...MEMO...
Page 248: ...21 1 Wiring Diagram 21 Wiring Diagram...
Page 249: ...21 2...