TOHATSU BFT75A Service Manual page 415

4 stroke outboard motor
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CYLINDER BLOCK
Install the upper main bearings [1] on the cylinder block,
aligning the projection [2] on each upper main bearing
with the concave [3] in the cylinder block.
Apply molybdenum disulfide oil to the crankshaft main
journal, crank pin and the thrust washer mating surface.
Put the No.2 and No.3 pistons at bottom dead center of
their stroke.
Install the crankshaft on the cylinder block while
aligning it with the No.2 and No.3 connecting rods.
Install the connecting rod bearing [1] and the
connecting rod cap [2], aligning the projection [3] on the
connecting rod bearing with the recess [4] in the
connecting rod cap.
Apply engine oil to the threads and seat of the
connecting rod bolts [1].
Install the connecting rod cap assembly [2] on the
connecting rod [3], and tighten the two connecting rod
bolts to the specified torque.
After tightening to the specified torque, tighten the bolts
an additional 90°.
TORQUE: 10 N·m (1.0 kgf·m, 7 lbf·ft) + 90°
• Install the connecting rod cap assembly, aligning the
code number [4] with the number on the connecting
rod.
• Check that the piston is at the bottom dead center of
its stroke before tightening the bolts. If not, turn the
crankshaft to bring the piston at the bottom dead
center.
15-14
[1]
[3]
[4]
[2]
[4]
[2]
[3]
[1]
[1]
[2]
[1]
[3]

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