Page 265 - REPOWER REFERENCE GUIDE (2020)

8.1L/496/8.2L Triple Catalyst
Inboard and Service Exhaust Elbow

This elbow is installed on the 8.2 inboard models at the factory and will supersede all exhaust elbows for 8.2 service
replacement parts, including the 8.2 sterndrive models.
The elbow is not installed on the 8.2 sterndrive models at the factory, but is used as a replacement part through the service
department.

a
b

c
d
49574
8.2 inboard and service exhaust elbow

Vent Valve
IMPORTANT: The vent valve and vacuum breaker valve on each exhaust elbow must be replaced once every three years or
every 300 hours of operation.
Removal
1. Remove the worm‑gear hose clamp and hose at the T‑fitting and the water fitting on the exhaust elbow.
a a a - Vacuum breaker valve
b b b - Air inlet hole
c - Worm‑gear hose clamp at
T‑fitting
d - Worm‑gear hose clamp at
the water fitting

d
d

c
c c 46391

90-8M0149179 eng NOVEMBER 2018 © 2019 Mercury Marine Page 7G-17