Specifications
Valve stem diameter
EX: 6.0
3:;:
mm (0.315
;g:$$
in)
Valve guide diameter
IN: 8.0
$ti”,
mm (0.315
$E
inl
EX:8.0
:~:~~~
mm (0.315
:i:“g
in)
Valve stem
to
guide clearance
IN: 0.020
-
0.044 mm (0.00079
-
0.00173 in)
EX: 0.035
-
0.059 mm IO.00138
-
0.00232 in)
4) Valve face
runout
limit
IN
&
EX: 0.03 mm (0.0012 in) or less
10.
VALVE SPRING
11
Free length
INNER
(IN/EX):
42 mm (1.654
in)
OUTER
~(INIEX):
42.55 mm (1.675 in)
2) Spring rate
INNER (INIEX):
kl
= 1.43 kg/mm (80.1 lb/i”)
kz
= 1.81 kg/mm (101.4
lb/in
OUTER (INIEX):
kl
= 3.2 kg/mm (179.2 lb/i”)
k2
= 4.18
kglmm(234.1
lb/in)
3)
Installed length
IValve
closed1
INNER (INIEX): 35 mm (1.378 in)
OUTER
(IN/EX):
37 mm (1.457
in)
4) Installed pressure (Valve closed)
INNER (INIEX): 10
to.7
kg
(22.0
*
1.5 lb)
OUTER
(IN/EX):
17.7
f
1.25 kg (39.0
*
2.8
lb1
5) Compressed length (Valve
open)
INNER (INIEX): 25.5 mm Il.004
in1
OUTER
(IN/EX):
27.5 mm (1.083
in)
61 Compressed
prestw?
(Valve
Open)
INNER
(IN/EXI:
27.2
f
1.9 kg (60.0
f
4.2 lb)
OUTER
IIN/EX):
57.4
e4.0
kg (126.5
t
8.8 lb)
7) Wire diameter
INNER
(IN/EX):
2.9 mm (0.114 in)
OUTER
(IN/EX):
4.2 mm (0.165 in)
8) Winding0.D.
INNER
(IN/EX):
19.4 mm IO.764 in)
OUTER (INIEX): 32.6 mm (1.283 in)
9) Number of windings
INNER
lIN/EXl:
6.0 turns
OUTER
llN/EX):
4.25 turns
11. CRANKSHAFT
PYo
/
1)
Crankshaft deflection limit
(A)
0.05 mm (0.002 in)
2) Con-rod large end clearance
(6)
0.15-
0.4 mm 10.0059” 0.0157 in)
3) Width of crankshaft
IC)
66
2:$
mm (2.598
1::’
in)
(D)
186
-;.3
mm (7.323
&,,2
in)
4) Crank pin I.D.
26
I$‘dg
mm (1.024
1::’
in)
5) Crank pin O.D.
x
length
26
j.M)6
x
65
_*;:;
mm
(1.024
_&,,2
x
2.559+z:zinl
12. CONNECTING ROD
1)
Big end I.D.
34+t”16
mm (1.339
+~Ooo6
in)
2) Small end I.D.
20$$85
mm (0.787
:i:gA
in)
13. CRANK BEARING
1)
Type Right end
$30$78-19
(Ball
bearing)
Others
432.$68-17
(Rollar
bearing)
2) Oil seal type
SD-25-40-9
14. CLUTCH
11
Clutch
type
Wet, multiple
type
21
Clutch operating mechanism
Inner push type. screw push system
3)
Primary reduction ratio and method
72/27 (2.666). spar gear
4) Primary reduction gear back lash
(4
twthl
21.45
_-0,-,25mm
(0.8445
j.m,o
in)
0
_,o*_
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