TROUBLESHOOTING
SERVICE MANUAL NUMBER 22
90-860074--1 FEBRUARY 2002 Page 1C-5
Poor Boat Performance and/or Poor Maneuverability
Symptom Cause
1. Bow too low 1. A. Improper drive unit trim angle
B. Improper weight distribution
C. Boat is underpowered
D. Permanent or power hook in boat
bottom
E. False bottom full of water
F. Improperly adjusted trim tabs (after
planes)
2. Bow too high 2. A. Improper drive unit trim angle
B. Propeller pitch too great
C. Dirty boat bottom (marine growth)
D. Poor running engine
E. Improper weight distribution
F. Rocker in boat bottom
G. False bottom full of water
H. Improperly adjusted trim tabs (after
planes)
3. Propeller ventilating 3. A. Drive unit installed too high on
transom
B. Dirty or rough boat bottom
C. Damaged propeller; pitch too
small; diameter too small
D. Keel located too close to propeller
or too deep in the water
E. Water pickup or accessories lo-
cated too close to propeller
F. Hook in boat bottom
G. Propeller plugged up with weeds
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