Service manual

5-68
E
POWR
VALVES AND VALVE SPRINGS
2. Install the new valve guide 2 by striking
the special service tool from the camshaft
side until the valve guide clip 3 contacts
the cylinder head.
NOTE:
Apply engine oil to the surface of the new
valve guide.
Valve guide remover:
Intake (4.0 mm):
YM-04111/90890-04111
Exhaust (4.5 mm):
YM-04116/90890-04116
Valve guide installer:
Intake (4.0 mm):
YM-04112/90890-04112
Exhaust (4.5 mm):
YM-04117/90890-04117
3
E
2
3. Insert the special service tool into the
valve guide 2, and then ream the valve
guide.
NOTE:
• Turn the valve guide reamer clockwise to
ream the valve guide.
• Do not turn the reamer counterclockwise
when removing the reamer.
4. Measure:
• Valve guide inside diameter
Valve guide reamer:
Intake (4.0 mm):
YM-04113/90890-04113
Exhaust (4.5 mm):
YM-04118/90890-04118
Valve guide inside diameter:
Intake:
4.000–4.012 mm
(0.1575–0.1580 in)
Exhaust:
4.500–4.512 mm
(0.1772–0.1776 in)
2