Yamaha 2000 YFM400FWA Service Manual page 30

Compressed pressure
(installed)
Tilt limit *
Direction of winding
(top view)
Piston:
Piston to cylinder clearance
Piston size "D"
Measuring point "H"
Piston off-set
Piston pin bore inside diameter
Piston pin outside diameter
Piston rings:
Top ring
Type
Dimensions (B × T)
End gap (installed)
Side clearance (installed)
MAINTENANCE SPECIFICATIONS
Item
IN
EX
IN
EX
IN
EX
H
D
T
Standard
235.4 ~ 251.1 N (24.00 ~
25.60 kg, 52.92 ~ 56.45 lb)
235.4 ~ 251.1 N (24.00 ~
25.60 kg, 52.92 ~ 56.45 lb)
Clockwise
Clockwise
0.040 ~ 0.065 mm
(0.0016 ~ 0.0026 in)
84.445 ~ 84.460 mm
(3.3246 ~ 3.3252 in)
5 mm (0.20 in)
0.5 mm (0.0200 in)
20.004 ~ 20.015 mm
(0.7876 ~ 0.7880 in)
19.993 ~ 20.000 mm
(0.7871 ~ 0.7874 in)
B
Barrel
1.2 × 3.1 mm
(0.0472 × 0.1220 in)
0.2 ~ 0.4 mm
(0.0079 ~ 0.0157 in)
0.03 ~ 0.08 mm
(0.0012 ~ 0.0031 in)
2 - 8
SPEC
Limit
----
----
2.5˚/1.6 mm
(2.5˚/0.06 in)
2.5˚/1.6 mm
(2.5˚/0.06 in)
----
----
0.15 mm
(0.0059 in)
----
----
----
20.045 mm
(0.7892 in)
19.973 mm
(0.7863 in)
----
----
0.65 mm
(0.0256 in)
0.13 mm
(0.0051 in)