Replacing The Valve Guide - SELVA MARINE Grey Whale 200 EFI Service Manual

Valve stem-to-valve guide clearance
= valve guide inside diameter – valve
stem diameter:
Intake:
0.012–0.045 mm
(0.0005–0.0018 in)
Exhaust:
0.025–0.058 mm
(0.0010–0.0023 in)

Replacing the valve guide

NOTE:
After replacing a valve guide, check the valve
seat contact area. To check the valve seat
contact area, see Chapter 5, "Checking the
valve seat."
1. Remove the valve guide 1 using the
special service tool from the combustion
chamber side.
Valve guide remover/installer:
90890-06801
2. Install a new valve guide 2 using the
special service tools from the camshaft
side until the valve guide installer 3 to
the specified height a.
3
a
6AL3J11
1
S69J5790
2
E
S6P25E30
NOTE:
Apply engine oil to the outer surface of a new
valve guide.
Valve guide remover/installer:
90890-06801
Valve guide installer 3:
90890-06810
Valve guide installation position:
Intake and exhaust a:
13.8 ± 0.2 mm (0.5 ± 0.01 in)
3. Insert the special service tool into the
valve guide 2, and then ream the valve
guide.
NOTE:
• Apply engine oil to the inner surface of the
valve guide.
• Turn the valve guide reamer clockwise to
ream the valve guide.
• Do not turn the reamer counterclockwise
when removing the reamer.
• Be sure to clean the valve guide after ream-
ing it.
Valve guide reamer: 90890-06804
4. Measure the valve guide inside diameter.
Valve guide inside diameter:
Intake and exhaust:
5.504–5.522 mm
(0.2167–0.2174 in)
Cylinder head
1
2
3
4
5
6
7
8
9
5-48