Anode Metal Check (Inner Side) - TOHATSU BFT75A Service Manual

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ANODE METAL CHECK (INNER SIDE)

CYLINDER SLEEVE WATER JACKET
Remove the cylinder head water jacket anode (page
11-4).
Check the anode [1] for excessive wear or corrosion.
If the anode is worn to less than 2/3 of its original
length, replace the screw, anode metal, sealing bolt
with new ones as a set.
If the sealing bolt is rusty or damaged, replace the
screw, anode metal, and sealing bolt with new ones as
a set.
Check the continuity between the anode [1] and
cylinder head.
Remove any corrosion; it prevents continuity.
Perform the continuity inspection between the anode
metal surface without corrosion and the bare aluminum
surface of the cylinder head.
If there is no continuity, remove the anode metal and
remove the corrosion of the following parts using a soft
resin brush or shop towel.
– Anode metal (cylinder head attaching area) [1]
– Cylinder head (anode metal attaching area) [2]
– Screw (Anode metal attaching area) [3]
– Screw (male screw area) [4]
– Anode metal (screw head attaching area) [5]
Clean the cylinder head (female nut area) [6] using a
M6 x 1.0 tap.
Install the anode metal and recheck the continuity.
If there is no continuity, replace the screw, anode metal,
and screw with new ones as a set.
MAINTENANCE
[1]
[1]
[4]
[2]
[5]
[3]
[6]
[1]
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