GASOLINE ENGINES BRAVO MODELS
Page 34 of 116
Finding Crankshaft Horizontal Centerline (“X” Dimension)
“X” Dimension can be measured by the “90° Tool Method” or by the “Tape Measure Method.”
90
° TOOL METHOD
1. Construct 90° tool.
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90°
b
a
a-Dimension From Chart Below
b-Measurement: 4 Ft. (1.2 M)
To Lower Sterndrive Unit - Subtract from dimension “a.”
To Raise Sterndrive Unit - Add
to dimension “a.”
90
° TOOL VERTICAL DIMENSION CHART
Sterndrive Unit Location
Bravo One/Two/Three 13-9/16 in. (345 mm)
IMPORTANT: This dimension should only be raised or lowered after proper testing.
2. Determine “X” Dimension location of crankshaft centerline(s).
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c
a
b
c
b
a
Single Engine Dual Engine
a-Place 90
° Tool Along Boat Bottom At Vertical Centerline
b-Point At Which Top Of Tool Contacts Transom On Vertical Centerline Is Crank-
shaft Horizontal Centerline
c-Draw A Line Perpendicular To Vertical Centerline At Crankshaft Horizontal
Centerline
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