Robin EY15V - Page 50

I
I
CORRECTION
>ORRECTIOh
METHOD
LIMIT
USE I REMARKS 1 TOOL
1'
ITEM
ENGINE
MODEL
STANDARD
SIZE
t 1
TOLERANCE
LIMIT
Free length EY15
1 EY20
Vernier
calipers
37 -1.5 Replace
Squareness
I E::: '.' 1 length I
For total
Replace
Intake
Exhaust
6.5 dia'
-0.025-4.040
-0.056--0.078
Micro-
meter
-0.15
Replace
Valve stem
O.D.
Clearance between
stem and guide
Intake
Exhaust
6.5 dia.
-0.025--0.040
-0.056--0.078
0.025 - 0.062
Intake
Exhaust
Intake
0.3
At middle
Cylinder
0.3
Replace
Exhaust
0.056
- 0.100
When cold
0.10 *0.02
Tappet clearance EY20
I EY15
below
above
0.05
0.25
0.5
Correct
Replace
0.1 - 0.3
Intake 5.9
Exhaust 5.9
-1
.o
Vernier
calipers
Vernier
calipers
- 0.5
0.2
-1 .o
-0.5
0.2
Stem end length
EY
20
Replace
Replace
Intake 6.2
Exhaust 6.4
35.6
Total length +0.06
- 0
41.7
Clearance between EY 15
stem and guide
EY20
I
~~~ ~
0.013 - 0.037
Spark plug
EY 15
1 EY20
NGK BM4A
EY15
1 EY20
Adjust
or
replace
Spark gap
0.6
- 0.7
1
Spark timing
EY15
1 EY20
Timing
tester
f 2" f 5"
Adjust
23" before T.D.C.
0.35
~
f 0.05
Contact
breaker
Point opening
I E:;:
5 0.1
Adjust
- 46 -