Yamaha SXV70ERG, Supplementary Service Manual

Page: 136 / 173

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MAINTENANCE SPECIFICATIONS
SPEC
a
MAINTENANCE SPECIFICATIONS
ENGINE
Model SXV70/ SXV70ER
Cylinder head:
Volume (with spark plug)
<Warp limit>
#1: 24.55
X
24.85 cm
3
(1.50
X
1.52 cu.in)
#2, #3: 21.35
X
21.65 cm
3
(1.30
X
1.32 cu.in)
<0.03 mm (0.0012 in)>
*Lines indicate straight edge measurement.
Cylinder:
Material
Bore size
<Wear limit>
<Taper limit>
<Out-of-round limit>
Aluminum alloy with dispersion coating
69.000
X
69.014 mm
(2.7165
X
2.7171 in)
<69.100 mm (2.7205 in)>
<0.05 mm (0.002 in)>
<0.01 mm (0.0004 in)>
Piston:
Piston size (D)
Measuring point
Piston to-cylinder clearance
<Limit>
Piston offset
Piston offset direction
Piston pin bore inside diameter
68.927
X
68.930 mm
(2.7137
X
2.7138 in)
10 mm (0.39 in)
0.070
X
0.075 mm
(0.0028
X
0.0030 in)
<0.25 mm (0.010 in)>
0.75 mm (0.0295 in)
EX side
20.004
X
20.015 mm (0.7876
X
0.7880 in)
Piston pin:
Piston pin outside diameter
Piston pin length 19.995
X
20.000 mm (0.7872
X
0.7874 in)
55.7
X
56.0 mm (2.193
X
2.205 in)
Piston ring:
Sectional sketch
Top Ring
2nd Ring
End gap (installed) Top Ring
2nd Ring
Side clearance Top Ring
2nd Ring
Coating Top Ring
2nd Ring
Keystone
B = 1.20 mm (0.047 in)
T = 2.75 mm (0.108 in)
Keystone
B = 1.20 mm (0.047 in)
T = 2.75 mm (0.108 in)
0.35
X
0.55 mm (0.014
X
0.022 in)
0.35
X
0.55 mm (0.014
X
0.022 in)
0.02
X
0.06 mm (0.0008
X
0.0024 in)
0.02
X
0.06 mm (0.0008
X
0.0024 in)
Chrome plated / Parkerrizing
Chrome plated / Parkerrizing