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1981
EC340E
3. SPECIFICATIONS
NOTE
:
* .....
New specification
c
General
(Compared with 1980
ET340ED)
Model
EC340
E:
Model:
Model (1.8.M. No.)
*
EC340E (8l6)
c
Frame I.D. &
starting
number
*
8l6-06701
Engine I.D. & starting number
*
E3
88-06701
Dimension:
Overall
length
2.555
mm (100.6 in)
Overall width (std)
97
0 mm (38.2 in)
Overall height (w/windshield)
1.040
mm
(40.9 in)
c
Engine
Description
:
Engine type
Fan
cooled
two-stroke 5-port. twin cylinders
Engine model
E338
Displacement
338
cc (20.6 cu.in)
Bore
X
Stroke
60
X
59
.6 mm
(236
X
2.35
in)
Effective
compression ratio
6.5: 1
Starting system
Recoil hand
starter and
electric
starter
Ignition
system
C.D.1.
lubrication system
"Autolube" oil inspection
c
Cylinder
head:
Combustion
chamber volume (with
spark
plug)
21.3 cc (1.30 cu.in)
Compression chamber
type
Dome
+
Squish
Head
gasket
thickne ss
0.5 mm (0.02 in)
Cylinder:
Material
Cast iron sleeves aluminum
Bore size
60 mm (2.362 in)
Taper
limit
0.05 mm (0.0020 in)
Out
of
round limit
0.01 mm (0.0004 in)
.
.
Piston:
c
Piston
skirt
clearance
(Measuring
point)
0.040
~
0 .045 mm (0.0016
~
0 .0018
in)
(10 mm from piston skirt
end)
Pi ston oversize
1 st 60.25 mm (2
.3
72
in)
2nd 60.50
mm (2.382 in)
3rd 60.75
mm
(2.392
in)
4th
61.00
mm (2.402 in)
Piston pin
outside
diameter X length
cP16 X 47 mm (cPO.630 X 1.85 in)
Piston
ring:
Piston ring design (Top)
Keystone
c
Piston ring design (2nd)
Keystone
'Ring
end gap
(installed) (Top)
0.35
~
0
.55
mm (0.014
~
0.022 in)
.
Ring
end
gap (installed) (2nd)
0
.35
~
0.55 mm (0.014
~
0
.022
in)
Small end
bearing:
Type
Needle bearing
c
Big end
bearing
:
Type
Needle bearing
Crankshaft:
Crankshaft assembly
width (A)
160
±
0 .1 mm (6.30
±
0.004
in)
-2-
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