172
-
If the valve sealing surface is wider than the
prescribed limit, interrupted in one or more
points, or bent, replace the valve.
Warning
– Do not change the valve assembly
position.
10.10.27 Inspecting the Valve Seats
-
Clean any carbon build-up from the valve
guides.
-
Measure the internal diameter of each valve
guide.
-
Take the above measurement at three different
heights, according to the direction of the thrust
of the valves.
Standard dimension:
Valve seat diameter (intake)
∅
0.1969-0.1973 in
(
5.000-5.012 mm
)
Standard dimension:
Valve seat diameter (exhaust)
∅
0.1969-0.1973 in
(
5.000-5.012 mm
)
Max. allowable dimension:
Valve seat diameter (intake)
∅
0.1977 in
(
5.022 mm
)
Max. allowable dimension:
Valve seat diameter (exhaust)
∅
0.1977 in
(
5.022 mm
)
-
Check the width of the wear on the valve seat
(indicate by “V” in the figure) does not exceed a
width of 0.063 in (
1.6 mm
). If the wear exceeds
this limit, replace the cylinder head with a new
one.
10.10.28 Inspecting the Valves
-
Measure the diameter of the valve stems in the
three positions indicated in the figure.
Standard dimension:
Valve stem diameter (intake)
∅
0.1957-0.1963 in
(
4.972-4.987 mm
)
Standard dimension:
Valve stem diameter (exhaust)
∅
0.1953-0.1959 in
(
4.960-4.975 mm
)
Min. allowable dimension:
Valve stem diameter (intake)
∅
0.1953 in
(
4.960 mm
)
Summary of Contents for GT 200
Page 1: ......
Page 90: ...90 9 1 2 Turn Signal Lights Horn Services and Accessory Pre Wiring ...
Page 151: ...151 10 10 Lubrication Circuit ...
