Abstract: A thermally resistant exhaust coupler having a thickness, an inner cylindrical surface and an outer cylindrical surface constructed of an elastomeric polymer and extend the length of the coupler as elastomeric polymer layers. The thickness includes at least one thermally resistant fiber layer located between the inner cylindrical surface and outer cylindrical surface and substantially extending the length of the thermally resistant exhaust coupler. The thermally resistant fiber layer may be constructed from a ceramic selected from one or more of the following materials: basalt, alumina, borica, silica, mullite, S glass or E glass, 3M® Nextel®, or a combination thereof.

Abstract: The calibration procedure allows an upward maximum limit of tilt to be automatically determined and stored as an operator rotates a marine propulsion device relative to a marine vessel with a particular indication present. That indication can be a grounded circuit point which informs a microprocessor that at calibration procedure is occurring in relation to an upward trim limit. When the ground wire is removed or disconnected from the circuit point, the microprocessor knows that the calibration process is complete. During the rotation of the outboard motor or marine propulsion device in an upward direction, both the angular position of the outboard motor and the direction of change of a signal from a trim sensor are stored.