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5-5 BRAKE-IN OPERATION OF REASSEMBLED ENGINE
An overhauled engine must be operated at low speed to break-in the parts. A thorough break-in is indis-
pensable particularly when the cylinder, piston, piston rings or valves are replaced with new ones.
The recommended break-in schedule is shown below.
S
e t
p
S
e t
p
1
S
e t
p
2
S
e t
p
3
S
e t
p
4
S
e t
p
5
L
o
a
d
N
o
L
o
a
N
o
L
o
a
N
o
L
o
a
E
Y
1
5
3 -
E
Y
2
0
3 -
E
Y
1
5
3 -
E
Y
2
0
3 -
d
d
d
. 1
k 0
W
1 (
3 .
5
H
) P
. 1
k 3
W
1 (
7 .
5
H
) P
. 2
k 0
W
2 (
7 .
H
) P
. 2
k 6
W
3 (
5 .
H
) P
Table. 3
- 27 -
E
n
g
n i
e
S
p
e
e
d
2
5 ,
0
0
p r
m
3
0 ,
0
0
p r
m
3
6 ,
0
0
p r
m
3
6 ,
0
0
p r
m
3
6 ,
0
0
p r
m
i T
m
e
1
0
m
. n i
1
0
m
. n i
1
0
m
. n i
3
0
m
. n i
6
0
m
. n i
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