Robin EY15 User Manual

I
CORRECTION
METHOD
ENGINE STANDARD CORRECTI,
MODEL TOLERANCE
Clearance between
0.050-0.090
pirition ring and
EY28 0.01 0-0.065
ring groove
0.01 0-0.065
Y
LIMIT
0.1 5
0.06L
REMARKS I TOOL
USE
LIMIT
0.1 5
0.06L
Feeler
gauge.
Micro-
meter
Replace
Fit between piston
and piston
pin
EY15
1 EY20 1
EY 28
-0.009-0.010
0.20
- 0.40
Ring gap EYZO
0.05 - 0.25
1 Feeler
Replace
Replace
1.5
-0.1
1.5
-0.1
I EY28 1 2nd
Oil
0.1 - 0.3
TEY15 1 2; T
-0.090--0.110
-0.060--0.080
Oil 2.8 -0.010--0.030
~~~
TOP 2.0 -0.050--0.070
Ring width 2nd 2.0 -0.010--0.030
011 2.8 -0.010--0.030
Top 1.5
2nd 1.5 4.010-
0.030
Oil 3.0
I 1 14 dia. I
Micro-
meter
0 - -0.008
Replace
- 0.04
0.1
0.2
-0.04
0.1
0.2
EY28 16 dia.
I I I
EY15 24 dia.
Large
end I.D. EY 20 26 die.
+0.013
Cylinder
Cylinder
Micro-
meter
gauge,
Replace
Replace
EY 28 28 dia.
Clearance between EY20
EY15
0.037-0.063
rad large end I.D.
and crankpin EY28 0.020-0.046
14 dia.
Small end I.D. 0.010-0.021
Cylinder
gauge
Cylinder
Micro-
meter
gauge.
Feeler
gauge
0.08
0.1 2
0.08
0.1 2
Replace
Replace
EY 28 16 dia.
Clearance between
Ey15
small end I.D.
EY20 0.010-0.029
and pinston pin
EY28
Rernachine
or Replace
Large end side
clearance
EY15
1 .o
1 .o
0.1 - 0.3
Parallelism between
EY 15
large end and
1
EY20 1
small end bores
EY28
I 0.05
Re-machine
or Replace
Test bar
and Dial
0.1
0.1
Distance between
large
end and
small end bores
EY 28 100
0.15
- 60 -

Robin EY15 Specifications

General

Ignition System	Transistorized magneto
Starting System	Recoil starter
Compression Ratio	8.5:1
Fuel System	Carburetor
Engine Type	Single cylinder, 4-stroke, air-cooled
Displacement	143 cc
Maximum Torque	9.3 Nm / 3000 rpm
Dry Weight	13.5 kg
Lubrication	Splash