E-Z-GO 4-STROKE AIR-COOLED GASOLINE ENGINE, Shop Rebuild Manual, Page: 39 / 100

ENGINE MEASUREMENTS
Page C-9
Kawasaki Engine Shop Rebuild Manual
Measure Valve Stem Diameter
A.
Measure the diameter of the valve stem [A] in two
directions at right angles, and at four different posi-
tions on the stem.
B. If any single measurement is less than the service
limit, replace the valve with a new one.
Valve Stem Diameter
Standard:
Inlet 6.960 ~ 6.975 mm (0.2740 ~ 0.2746 in.)
Exhaust 6.945 ~ 6.960 mm (0.2734 ~ 0.2740 in.)
Service Limit:
Inlet 6.95 mm (0.274 in.)
Exhaust 6.93 mm (0.273 in.)
Measure Valve Guide Inside Diameter
A.
Measure the inside diameter [A] of the valve guide
[B].
B. If the valve guide has worn enough to exceed the ser-
vice limit, replace the cylinder head.
Valve Guide Inside Diameter
Standard: 7.000 ~ 7.015 mm (0.2756 ~ 0.2762 in.)
Service Limit: 7.08 mm (0.279 in.)
Measure Valve/Guide Clearance (Wobble
Method)
A.
If a small bore gauge is not available, inspect the
valve guide wear by measuring the valve/guide clear-
ance with the wobble method, as indicated below.
B. Insert a new valve [A] into the guide [B] from the top
of the head.
C. Set a dial gauge against the stem perpendicular to it
as close as possible to the cylinder head upper sur-
face.
D. Move the stem back and forth [C] to measure valve/
guide clearance.
E. Repeat the measurement in a direction at a right
angle to the first.
F. If the reading exceeds the service limit, replace the
cylinder head.
The reading is not actual valve/guide clearance because the
measuring point is above the guide.
V alve/Guide Clearance (Wobble Method)
Standard:
Inlet 0.06 ~ 0.13 mm (0.0024 ~ 0.0051 in.)
Exhaust 0.10 ~ 0.17 mm (0.0039 ~ 0.0067 in.)
Service Limit:
Inlet 0.29 mm (0.011 in.)
Exhaust 0.33 mm (0.013 in.)