Mercury MERCRUISER, Service Manual, Page: 497 / 566

Qty. Description Part Number
4 Stainless steel clamps—101.60 mm (4 in.) Obtain Locally
IMPORTANT: The shutter assembly must be installed no less than 10 in. after the elbow. It must be installed at a minimum
3° down angle.
TowSport Exhaust
TowSport exhaust shipped with mufflers:
•
Tested and qualified mufflers shipping with engine
• OEM does not have to purchase separately
• Internal drain
General Information
The height of the exhaust elbows must be within the dimensions specified to prevent water intrusion problems. Exhaust elbow
risers must be installed, if needed, to obtain the proper exhaust elbow height, and exhaust angle. Risers are limited to
152.4 mm (6 in.). Measurement must be taken with the boat in the water. It is important that the boat be loaded as outlined to
simulate the maximum loading conditions likely to be encountered in normal operation.
IMPORTANT: Load distribution recommendations are the responsibility of the boat manufacturer. Any load distribution
conditions that will affect the exhaust system must be clearly communicated to the operator in the owner's manual. For
example, the number of people that can be located on the swim platform simultaneously should be included in the manual, if
this could pose a problem.
Measurements under all loading conditions must be within the following specifications.
Minimum Exhaust Elbow Height
Model Specification
6.2L TowSport in‑line models 33 cm (13 in.)
6.2L TowSport V‑drive models 33 cm (13 in.)
Minimum Exhaust Hose Slope
Model Specification
6.2L TowSport
Within 406.4 mm (16 in.) of engine
10°
If the exhaust elbow height or exhaust angle is insufficient, modify the exhaust system or install the appropriate exhaust riser.
Refer to the appropriate
Mercury Precision Parts and Accessory Guide
for part numbers.
The maximum exhaust riser height is specified in the table below.
Riser Options
Model Low Medium High
6.2L TowSport 51 mm (2 in.) 102 mm (4 in.) 152 mm (6 in.)
Exhaust Pipe and Through-the-Propeller Exhaust
90-8M0099748 eng DECEMBER 2015 © 2016 Mercury Marine Page 7C-7