Robin EY28 Service Manual

l-
ITEM
CORRECT1
TOLERANCE
N
LIMIT
0.1 5
CORRECTION
METHOD
TOOL
AODEL
24 die.
-0.037
-0.050
Micro-
meter
Re-machine
or Replace
0.5 Crankpin O.D.
EY28
1 28 dia.
-0.020
-0.033
Crankpin
0.D
roundness
EYt5
EY20
1
EY 28
Micro.
meter
Less than 0.005
Crankpin O.D.
cylindricity
Crankpin O.D.
parallelism
Micro-
meter
Dial
wuge
Less than 0.005
Less than 0.008
- 0.05
Drive
s. 25 die.
EY15
Mag.
8. 25 dia.
Drive s. 25 die.
EY 20
Mag. s. 25 die.
Drive s. 30 dia.
EY28
Mag.
s. 30 dia.
Crankshaft
journal
O.D.
- O.OO3
- 0.01 2
Micro-
meter
- 0.05
Replace
- 0.25
Micro-
meter
Cam
lobe height
io.1
Replace
- 0.25
-0.05
I- -0.05
EY15 t-
Drive s. 15 dia.
EY20
Mag.
s. 15 dia.
-0.01 6--0.027
Micro-
meter
Replace
Drive
s. 25 dia.
EY 158
Mag.
s. 15 die.
-0.003--0.012
-0.016--0.027
Journal
O.D.
Drives. 15dia.
-0.016--0.027
EY 28D
Mag.
s. 25 dia
-0.020--0,033
-0.003--0.012
Drive
s. 30 dia.
EY28B
Mag.
s. 25 dia.
-0.020--0.033
EY15
EY 20
EY 28
Vernier
calipers
Free
length
37 -1.5
Replace
EY15
EY 20
EY 28
, ,o 1 For total
length
Squareness
Replace
Square
-61 -

Robin EY28 Specifications

General

Ignition System	Transistorized magneto ignition
Starting System	Recoil starter
Fuel System	Carburetor
Lubrication System	Splash
Dry Weight	25 kg
Cooling System	Air-cooled