NOTE:
• When installing a new valve always replace
the guide.
• If the valve is removed or replaced always
replace the oil seal.
• The valve seat surface width
Out of specification
Reface the valve seat.
Repairing limit value
2.0mm
a. Install the valve into the cylinder head.
b. Press the valve through the valve guide and
onto the valve seat to make a clear pattern.
c. Measure the valve seat width. Where the
valve seat and valve face made contact, blueing
will have been removed.
• Valve spring free length
• Valve spring squareness
Out of specification
Replace.
Valve spring free length
Intake:44.9mm Exhaust44.9mm
Valve spring squareness
Intake:1.60mm Exhaust 1.60mm
• compressed spring force(a)
Out of specification Replace.
(b) Installed length
Compressed spring force
Intake: 470 N at 24.5 mm
Exhaust: 270 N at 31.0 mm
2). Remove:
• valve guide
NOTE:
To ease guide removal, installation and to
maintain correct fit, heat the cylinder head to
100 °C (212 °F) in an oven.
a. Install the new valve guide using a valve guide
remover ① and valve guide installer ②.
b. After installing the valve guide, bore the
valve guide using a valve guide reamer ③
to obtain proper stem-to-guide clearance.
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