Table of Contents
Advertisement
2. Replace:
• Valve guide
Replacement steps:
To ease guide removal, installation and to
maintain correct fit heat the cylinder head in an
over to 100 °C (212 °F).
a. Remove the valve guide using a valve guide
remover "1".
b. Install the new valve guide using a valve
guide remover "1" and valve guide installer
"2".
Valve guide installation height "a":
Intake:
11.8–12.2 mm (0.46–0.48 in)
Exhaust:
11.3–11.7mm (0.44–0.46 in)
c. After installing the valve guide, bore the
valve guide using a valve guide reamer "3"
to obtain proper stem-to-guide clearance.
VALVES AND VALVE SPRINGS
Valve guide remover:
Intake:4.0 mm (0.16 in)
YM-4111/90890-04111
Exhaust:4.5 mm (0.18 in)
YM-4116/90890-04116
Valve guide installer:
Intake:4.0 mm (0.16 in)
YM-4112/90890-04112
Exhaust:4.5 mm (0.18 in)
YM-4117/90890-04117
Valve guide reamer:
Intake:4.0 mm (0.16 in)
YM-4113/90890-04113
Exhaust:4.5 mm (0.18 in)
YM-4118/90890-04118
After replacing the valve guide reface the valve
seat.
3. Inspect:
• Valve face
Pitting/wear → Grind the face.
• Valve stem end
Mushroom shape or diameter larger than
the body of the stem → Replace.
4. Measure:
• Margin thickness "a"
Out of specification → Replace.
Margin thickness:
Intake:
0.8 mm (0.0315 in)
Exhaust:
0.7 mm (0.0276 in)
5-32
Hide quick links:
Advertisement
Table of Contents
