TOHATSU BFT115A Service Manual page 413

Clean the cylinder block, cylinder head and chain case
mating surface.
Apply 2.0 – 3.0 mm (0.08 – 0.12 in) bead of liquid
sealant (Threebond® 1280B or equivalent) to the
specified area of chain case (1).
Apply larger bead (more than 2.5 mm (0.10 in) thick) to
the specified area (2) and (3).
Apply 2.0 – 3.0 mm (0.08 – 0.12 in) bead of liquid
sealant (Threebond® 1215 or equivalent) to the cylinder
head gasket mating area (4) between the cylinder head
and cylinder block, then install the chain cover.
• 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.
CYLINDER HEAD
2.0 - 3.0 mm
(2)
(0.08 - 0.12 in)
(1)
More than 2.5 mm (0.10 in)
More than 2.5 mm
(0.10 in)
(3)
2.0 - 3.0 mm
(0.08 - 0.12 in)
(4)
2.0 - 3.0 mm
(0.08 - 0.12 in)
14-21