Specifications - Yamaha ET340ED Supplementary Service Manual

1980 ET340ED
3. SPECIFICATIONS
NOTE :
* ....
New specification
General
(Compared with 1979 ET340EC)
Model ET340 ED
Model:
Model (I.B.M.
No.)
* ET340ED (8J9)
Frame 1.0. & starting number
*
8J9-040101
Engine 1.0. & starting number
*
E338 -040101
Dimension:
Overall length
*
2.555 mm (100.6 in)
Overall width (std) 970 mm (38 .2 in)
Overall height (w/windshield) 1.040 mm (40.9 in)
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 (2.36 X 2.35 in)
Effective compression ratio 6.5: 1
Starting system Recoil hand starter and electric starter
Ignition system C.D.I.
Lubrication system "Autolube" oil inspection
Cylinder head:
Combustion chamber volume (with spark plug)
21.3 cc (1.30 cu.in)
Compression chamber type Dome
+
Squish
Head gasket thickness 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:
Piston skirt clearance (Measuring point) 0.040
~
0.045 mm (0.0016
~
0.0018 in)
(10 mm from piston skirt end)
Piston oversize 1 st 60.25 mm (2 .372 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 ¢16 X 47 mm (¢0.630 X 1.85 in)
Piston ring:
Piston ring design (Top)
Keystone
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
Big end bearing:
Type
Needle bearing
Crankshaft:
Crankshaft assembly width (A) 160
±
0.1 mm (6.30
±
0.004 in)
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