TOHATSU BFT75A Service Manual page 429

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CYLINDER BLOCK
Select the correct bearing by referring to the crank pin
code letter and the connecting rod code number.
Connecting rod bearing selection table:
Crank pin
code letter
A
B
C
D
Selection table:
Code
letter
G
F
E
D
C
B
A
Connecting rod bearing center thickness: 1.5 mm (0.06
in)
The connecting rod bearings are available in the seven
I.D. colors (Blue, Black, Brown, Green, Yellow, Pink
and Red in this order) [1] at intervals of 0.003 mm
(0.0001 in) in tolerance.
Select the bearings so that the oil clearance is 0.020 –
0.038 mm (0.0008 – 0.0015 in).
Align the projection [2] on the bearing with the cutout in
the connecting rod and in the connecting rod cap.
Install the bearing with care not to damage the sliding
surface.
Check the connecting rod bearing oil clearance after
installing the selected bearing (page 15-24).
15-28
Connecting rod code number
1 2
Bearing identification color
Red Pink Yellow
Pink Yellow Green
Yellow Green Brown
Green Brown Black
I.D. color Tolerance
–0.005 – –0.002 mm
Red
(–0.0002 – –0.0001 in)
–0.002 – +0.001 mm
Pink
(–0.0001 – +0.00004 in)
+0.001 – +0.004 mm
Yellow
(+0.00004 – +0.0002 in)
+0.004 – +0.007 mm
Green
(+0.0002 – +0.0003 in)
+0.007 – +0.010 mm
Brown
(+0.0003 – +0.0004 in)
+0.010 – +0.013 mm
Black
(+0.0004 – +0.0005 in)
+0.013 – +0.016 mm
Blue
(+0.0005 – +0.0006 in)
3 4
Green
Brown
Black
Blue
[2]
[1]