TOHATSU BFT250A Service Manual page 436

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CYLINDER BLOCK
Install a new O-ring (26.2 x 2.4 mm) [1], two dowel pins
[2] and oil seal case [3] to the cylinder block.
Tighten the eight bolts (6 x 22 mm) [4].
Apply marine grease to a new oil seal [1] lips.
Drive in the oil seal into the crankcase upper cover [2]
using the special tool.
TOOL:
Oil seal driver, 66 mm [3]
Wipe the oil off the mating surface of the cylinder block
and the crankcase upper cover.
Before installing the crankcase upper cover, apply a 1.5
-3.0 mm bead of liquid gasket (Threebond
equivalent) to the shaded part as shown.
• To prevent leaks, do not install the parts if 5 minutes
or more have elapsed since applying the liquid
gasket. Instead, reapply liquid gasket after removing
the old residue.
• After assembly, wait at least 30 minutes before filling
the engine with oil.
• Do not apply liquid gasket to the O-ring groove.
15-22
07947-3710200
[2]
®
#1280B or
[1]
[2]
[1]
[4]
[3]
[3]