Boat Requirements - Mercury MerCruiser Product Applications Manual

Exhaust System
EXHAUST ANGLE MEASUREMENT
Measure the exhaust angle of each section of the exhaust system using an inclinometer
as shown in the diagram below. Begin the measurement at the exhaust elbow outlet
continuing along each section to the exhaust exit point of the boat. All exhaust angle
measurements must be performed with the boat at rest in the water. Perform the first set
of measurements without a load in the boat. Perform the second set of measurements with
the boat fully loaded. See Loading Requirements.

Boat Requirements

IMPORTANT: Consider the following requirements before performing the exhaust elbow
waterline height measurement. No prototype hulls or light layup hulls should be considered.
Any measurement performed on non‑production boats, prototype hulls, or light layup hulls
could be inaccurate and could result in product damage.
• All boats that display a CE certification capacity plate must use the maximum
capacity as stated on the CE certification capacity plate to perform the exhaust
elbow waterline measurement.
Page 6A-16
c
a
b
Typical exhaust (except 8.1L 496 cid.)
a - Inclinometer
b - Exhaust hose or tube
c
a
b
Typical exhaust 8.1L 496 cid.
a - Inclinometer
b - Exhaust hose or tube
18582
c - Minimum 457 mm (18 in.)
8235
c - Minimum 457 mm (18 in.)
90-863758060 AUGUST 2006