1. COMMON MODEL INFORMATION SINGLE OUTBOARD 1 - 1 I-I BOAT TRANSOM HEIGHT ! Measure from the top of the transom to the bottom of the boat, not including the keel. DUAL OUTBOARDS I t 3. Measure the distance between the two marks and place a third mark halfway between them. The line connecting the third mark with the keel is the center line. 330mm 330mrn L\ PORT MOTOR CENTERLINE 5 4. If dual outboards are to be installed, mark transom at a minimum of 330 mm (13 in) [305 mm (12 in) for BF40NBF50AI from center line.
\ANTI-VENTILATION PLATE INNER EDGE On a vertical line, inward from the outboard centerline and even with the edge of the anti- ventilation plate, measure up to the top of the transom. INSTALLATION HEIGHT CHECK Optimum outboard motor installation height varies with boat type and bottom shape. See INSTALLATION HEIGHT RECOMMENDATIONS section under the applicable model-family chapter. Contact boat manufacturer for any special recommendations unique to a specific model boat. If the outboard motor is installed too low: BOAT n The boat will squat and be hard to plane. The boat will tend to porpoise. The boat’s high-speed stability will be reduced. Top speed will be reduced.
If the outboard motor is set-up too high: Propeller ventilation June occur. Engine overheating will occur. The boat will tend to porpoise. Select an engine with a shaft length 1 inch longer than boat transom height. The shaft length of an Date of Issue: June 2003 0 2001-2003 American Honda Motor Co., Inc. 1122