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7.3. SPECIFICATION
A. General
MODEL
1.
1) Model (I.B.M. No.)
2) Frame I.D. and starting number
2.
DIMENSION
21 Overall width
3) Overall height
4) Seat height
3. WEIGHT
Engine
B.
1. DESCRIPTION
1) Engine type
2) Engine model
3) Displacement
4) Bore x stroke
5) Compression ratio
7) Ignition system
8) Lubrication system
2. C Y L I N D E R H E A D
1) Combustion chamber volume (with N-7Y)
2) Combustion chamber type
3) Head gasket thickness
3. C Y L I N D E R
1) Material
2) Bore size
3) Taper limit
4) Out of round limit
4. PISTON
1) Piston skirt clearance
21 Piston oversize
3) Piston pin outside diameter x length
5. PISTON RING
1) Piston ring design
2,180 mm (85.8 in)
835 mm (32.9 in)
1,160 mm (45.7 in)
815 mm (32.1 in)
1,435 mm (56.5 in)
150 mm ( 5 . 9 in)
212 kg (467 lb)
26°
2,500 mm (98.4 in)
14 m @ 50 km/h (45.9 ft @ 31 mi/h)
Air cooled, 4-stroke. SOHC twin. parallel forward
incline
2 F 0
653 cc (39.85 cu.in)
75 x 74 mm (2.953 x 2.913 in)
:
8.5 :
1
Kick and electric starter
Battery ignition
Wet sump
44.18 cc (2.696 cu.in)
Dome + Squish
1.2 mm (0.047 in)
Aluminum alloy with cast iron sleeve
0.05 mm (0.002 in)
0.01 mm (0.0004 in)
0.050 ~ 0.055 mm (0.0020 ~ 0.0022 in1
75.25 mm
12.963 inl
Barrel ring 1.2 mm (0.047 in)
Taper ring 1.5 mm (0.059 in)
With expander 2.8 mm (0.110 in)
(Oil ring)
(Installed. top
0.2 - 0.4 mm 10.008 - 0.016 in)
0.2 - 0.4 mm (0.008 - 0.016 in)
(Installed. 2nd
(Installed, oil)
0.3 - 0.9 mm (0.012 - 0.036 in)
0.04 - 0.08 mm (0.0016 - 0.0031 in)
0.03 - 0.07 mm (0.0012 - 0.0028 in)
75.50 mm
75.75 mm
76.00 mm
12.972 in,
12.982 in,
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