GASOLINE STERNDRIVE INSTALLATION MANUAL
90-860172011 Page 45 of 137
9. If measurements are less than specified, exhaust elbow risers must be installed to
achieve proper dimension.
77991
a
b
c
d
e
Typical Riser Installation
a-Exhaust Elbow
b-Restrictor Gasket
c-Riser
d-Open Gasket (4 Slots)
e-Exhaust Manifold
NOTE: Up to a maximum of 9 in. (229 mm) of riser height can be added.
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