GASOLINE STERNDRIVE INSTALLATION MANUAL
90-860172011
Page 47 of 137
CLEAR HOSE METHOD
1. Obtain a 5/16 - 3/8 in. (8-10 mm) long hose approximately 15 ft. (4.5 m) long. Put a metal
fitting or a weight on one end of the hose to keep that end of the hose below the water
line.
2. Put the weighted end of the hose over the port or starboard side of the boat, keeping
it in line with the engine’s exhaust elbow.
3. Route the remainder of the hose toward the engine’s exhaust manifold and elbow.
Ensure that this open end section of the hose is as vertical as possible from the boat’s
bilge to the top of the exhaust elbow
4. Coil excess hose in bilge of boat, keeping it below the water line.
5. Lower open end of hose and siphon water until it starts to come out of the hose. Put a
finger over the hose and lift open end until it is at the top of the exhaust elbow.
6. Slowly take finger off end of hose to let the water level stabilize. The water will seek the
level of the water outside the boat. Keep hose close to exhaust elbow and as vertical
as possible.
7. Make sure that the boat is level (side-to-side) using a level or inclinometer.
8. The measurement between water in hose and top of exhaust elbow is the exhaust elbow
height.
72700
b
c
d
a
e
a
76859
a -
Waterline
b -
Top Of Exhaust Elbow
c -
Clear Plastic Hose
d -
Weight
e -
Measurement - Waterline To Top Of Exhaust Elbow