9-9
Cylinder Head / Valve
Trim the reamer not to lean. If cutting the
reamer by leaning, the valve hole is inclined,
the step seal is leaked, and the around of valve
seat is enlarged. So the around of seat is not
amended.
The entrance of reamer is always performed
by turning the reamer to the right. If not, the
guide inside is damaged.
Tool: Valve guide reamer
Clean the cylinder head and remove the
foreign substances.
Check the around of valve seat and amend
them.
Valve Seat Inspection
Remove the carbon deposits of valve.
Coat the valve of cylinder head with the ink
thinly.
Trim valve guide reamer using a valve guide
dreamer without turning the valve, and align
the position exactly.
Tale off the valve, inspect the opposite side of
the seat with the ink attachment of valve pace
side.
If the valve seat is damaged, amend the valve seat.
If the valve is inclined, inspect the valve
guide-to-step gap and replace valve guide if
necessary.
It is impossible to amend the valve. If the
valve pace clogging, wear and connection are
bad, the valve must be replaced.
Measure the valve seat width.
Standard Value : 0.7~0.9(0.028~0.035)
Service Limit : 1.3mm(0.05in)
Valve Seat Cutter
Amend the worn valve seat using a valve seat
cutter and a grinder.
Perform them according to the instruction
manual.
60
35
IN : 22mm
Ex : 22mm
IN : 23mm
EX : 20mm
IN : 24.5mm
Ex : 24.5mm
!
CAUTION
!
CAUTION
!
CAUTION
Valve
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...