Yamaha RD125C Servicehandbuch Seite 368

RD125(DX) RD200(DX)
2. CYLINDER HEAD
1) Combustion Chamber Volume
2) Combustion Chamber Type
3) Head Gasket Thickness
4) Tightening Torque
Cylinder Head Holding Nut
Spark Plug
7.2 ± 0 . 1 5 cm
3
(NGK B-8ES)
Dome + Squish
0.5 mm (0.02 in)
0.7 m-kg (5ft-lb) (M6P1.0)
2.0 m-kg (14.5ft-lb) (M14 P1.25)
12.0 ± 0 . 2 5 cm
3
(NGK B-8ES)
0.7 m-kg (5ft-lb) (M7P1.0)
3. CYLINDER
1) Material
2) Bore Size
3) Taper Limit
4) Out of Round Limit
Aluminum alloy with cast iron sleeve
A
o
r\r\
MTX
A I
IA
A A O
A
M
A • »
43.00 - 43.02 mm (1.693 - 1.694 in)
0.05 mm (0.002 in)
0.01 mm (0.0004 in)
m f~\/-\ m i~\ I~I i I-I r\ A—I
o
r\ i c\ • \
52.00 - 52.02 mm (2.047 - 2.048 in)
4. PISTON
1) Piston Skirt Clearance
2) Piston Over Size
3) Piston Pin Outside Diameter x Length
0.035 - 0.040 mm (0.0014 - 0.0016 in)
43.25 mm (1.703 in)
43.50 mm (1.713 in)
43.75 mm (1.722 in)
44.00 mm (1.732 in)
12 mm x 35 mm (0.47 x 1.38 in)
52.25 mm (2.057 in)
52.50 mm (2.067 in)
52.75 mm (2.077 in)
53.00 mm (2.087 in)
14 mm x 41 mm (0.55 x 1.61 in)
5. PISTON RING
1) Piston Ring Design (Top)
Piston Ring Design (2nd)
2) Ring End Gap (Installed) (Top)
Ring End Gap (Installed) (2nd)
3) Ring Groove Side Clearance (Top)
Ring Groove Side Clearance (2nd)
Keystone ring (1.5 mm)
Keystone ring (1.5 mm)
0.2 - 0.4 mm (0.008 - 0.016 in)
0.2 — 0.4 mm (0.008 — 0.016 in)
Keystone ring (1.2 mm)
Keystone ring (1.2 mm)
0.3 - 0.5 mm (0.012 - 0.020 in)
f\
A A P
i r\ r\ . no so.
• v
0.3 - 0.5 mm (0.012 - 0.020 in)
6. SMALL END BEARING
1) Type
Needle bearing
7. BIG END BEARING
1) Type
Needle bearing
8. CRANKSHAFT
1) Crankshaft Assembly Width (A)
P r n n U k n l .
A S.S. A BM
Ul. •
\ A
l\«J*k ICI
Lranksnatt Assemoiy wiotn ( r i
2) Crankshaft Deflection (D)
3) Connecting Rod Large End Side Clearance (C)
126-8.3 mm (4.96-8 oi2 in)
A O - 0.05 _ _ _ , m son - 0 . 0 0 2 : — \
43 -o.iomm (1.69 -oXSin)
0.05 mm (0.002 in)
0.3 - 0.7 mm (0.012 - 0.028 in)
140-8.3 mm (5.51
- 8 . 0 1 2
in)
A~l - 0 . 0 5 IA o r - 0 . 0 0 2 - \
47 -o.io m m (1.85 - 0 . 0 0 4 m)
344