Page 225 - REPOWER REFERENCE GUIDE (2020)

Single Catalyst V8 Engines
Scorpion 350 and Scorpion 377 H.O.

Torque
Ref. No. Qty. Description Nm lb‑in. lb‑ft
1 1 Typical manifold assembly
2 1 Manifold‑to‑cylinder‑head gasket
3 1 Brass pipe fitting
4 1 Elbow assembly (without riser)
5 1 Plug
6 1 Brass pipe fitting
7 1 Elbow‑to‑manifold gasket
8 1 Air‑actuated drain assembly
9 1 O‑ring
10 1 Check ball
11 1 Drain assembly fitting
12 2 Oxygen sensor cover brackets
13 2 Screw 3 28
14 1 Straight fitting
15 4 Screw 49 36
16 1 Exhaust manifold coolant temperature sensor 16 142
17 1 Catalyst
18 6 Screw 41 30
19 2 Oxygen sensor 50 37
NOTE: The port exhaust assembly is shown; starboard is similar.

90-8M0149179 eng NOVEMBER 2018 © 2019 Mercury Marine Page 7E-9