TOHATSU BFT115A Service Manual page 79

ANODE METAL INSPECTION (INSIDE
ENGINE)
EXHAUST MANIFOLD
Remove the engine cover.
Remove the four bolts (1) and two exhaust manifold
covers (2).
Check the anode metal (1) for excessive wear or
corrosion and replace if necessary.
If the anode metal is worn to less than 2/3 of its original
length, replace it with a new one.
Check the continuity between the anode metal and
exhaust manifold.
Remove the corrosion as it prevents the continuity.
Perform the continuity inspection between the anode
metal surface without corrosion and the bare aluminum
surface of the exhaust manifold.
If there is no continuity, remove the exhaust manifold
anode metal (page 5-112) and remove the corrosion of
the following parts using a sandpaper.
– Exhaust manifold (anode attaching area) (1)
– Anode metal (exhaust manifold attaching area) (2)
– Anode metal (screw head attaching area) (3)
– Screw (male screw area) (4)
– Screw (Anode metal attaching area) (5)
Clean the exhaust manifold (female nut area) (6) using
a M6 x 1.0 tap.
Install the anode metal (page 5-112) and recheck the
continuity.
If there is no continuity, replace the anode metal with a
new one and recheck.
Install the engine cover.
MAINTENANCE
(1)
(2)
(1)
(6)
(1)
(3)
(5)
(4)
(1)
(2)
3-21