Robin EY08D - Page 46

1 1
ITEM
STANDARD
CORRECTION
USE
SIZE
TOLERANCE
I LIMIT LlMlT
REMARKS
lzl 5.5 dia. 1-1 -0.1
5
-0.020- -0.032
Valve stem O.D.
Exhaust -0.056 - -0.092 :
Clearance between
stem and guide
+
Intake 0.020 - 0.050
Exhaust 0.056 - 0.092
0.3 0.3 At middle
below
1
Tappet clearance
0.1 0 +0.02
above When cold
0.25
Clearance between
groove and retainer
0.1 - 0.3 1 0.5
0.5
I
Stem end length
'
Intake
Exhaust
3.5
-1 .o -1.0
~
Total length
20.8 I +0.06 - 0 1
-0.5 1 -0.5
Clearance between
stem and guide
Spark plug
NGK BM4A
Spark gap
Spark timing
25" before
T.D.C.
TOOL I CORRECTlOh
METHOD
Vernier
calipers
Replace
Square Replace
Micro-
meter
Replace
Cylinder
Replace
gauge
Feeler
gauge
Replace
Vernier
calipers
Replace
Vernier
calipers Replace
Feeler Adjust or
gauge replace
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