GASOLINE STERNDRIVE INSTALLATION MANUAL
Page 12 of 137 90-860172011
Crankshaft Horizontal Centerline (X-Dimension)
X-Dimension can be measured by the 90 degree Tool Method or by the Tape Measure
Method.
90 DEGREE TOOL METHOD
1. Construct 90 degree tool.
71621
90°
b
a
a-13-9/16 in. (345 mm)
b-Measurement: 4 ft. (1.2 m)
To Lower Drive Unit - Subtract
from dimension “a.”
To Raise Drive Unit - Add
to dimension “a.”
IMPORTANT: This dimension should only be raised or lowered after proper testing.
71622
71623
Single Engine Dual Engine
2. Place 90 degree tool along boat bottom at vertical centerline.
3. Locate the point at which top of tool contacts transom on vertical centerline. This is the
crankshaft horizontal centerline or X-Dimension.
4. Draw a line perpendicular to vertical centerline at crankshaft horizontal centerline.
To Next Page
Loading...
