The Hydro-Foil Propeller Guard®
required for your boat is based on the diameter of the propeller and not the horse power
of the motor.
NOTICE: The MK-I series
Hydro-Foil Propeller Guard® is only approved for propellers under ten inches (10")
in diameter, in the eight to eleven pitch range, usually as eight up to a nine and one
quarter (8- 9 1/4") size propeller - thru -hub exhaust. If your propeller does not
fit these guidelines, then you must move up to the MK-II series Hydro Foil Propeller
Guard® ( for sizes 10" - 14 ˝"). Examples: 9" diameter - 10"
pitch (Honda/Yamaha/Evinrude/Johnson/OMC Outboards) or the 9" X 9" prop used on
Mercury O/B’s or the 8.5" X 10" prop Nissan/Tohatsu).
Fax (435) 755-0154