Mercury 4.3 MPI SeaCore

Section 1 - Getting to Know Your Power Package
90-8M0113859 eng DECEMBER 2015 Page 19
Two 10‑amp fuses protect the O
2
(oxygen) sensors. These are located at the rear of the engine, near the 14‑pin connector.
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Oxygen sensor fuses—5.0 MPI ECT
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Oxygen sensor fuses—4.3 MPI ECT cover removed for clarity
A 15‑amp accessory fuse protects the accessory circuits. This fuse is located at the rear of the engine.
a - Cover
b - 15‑amp fuse
c - Accessory harness
a
b
c
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