Echo PB-255ES User Manual
Page 5
SERVICE INFORMATION
PB-251
PB-255ES
ES-255ES
5
1-5 Service limits
5K016
5K263
5K264
5K265
5K266
5K204
5K017
5K219
5K171
5K267
A
B
C
D
E
F
G
H
K
L
Description
mm (in)
A Cylinder bore
When plating is worn and aluminium can be seen
B Piston outer diameter
Min.
33.91 (1.335)
C Piston pin bore
Max.
8.035 (0.3163)
D Piston ring groove
Max.
1.3
(0.051)
E Piston ring side clearance
Max.
0.1
(0.004)
F Piston pin outer diameter
Min.
7.980 (0.3142)
G Piston ring width
Min.
1.15 (0.045)
H Piston ring end gap
Max.
0.5
(0.02)
K Con-rod small end bore
Max.
12.000 (0.4724)
L Crankshaft runout
Max.
0.03 (0.001)