Abstract: A retractable roof is provided for mounting on a two-wheeled vehicle such as a motorcycle. The roof comprises a flexible waterproof canopy which is removably supported by a tubular metal frame movably secured to the vehicle. The frame includes a stationary base portion and an overhead portion including a front bow, central bow, and rear bow, all of which can be pivoted from an upright position over the seat of the vehicle to a lowered position parallel to the base portion and behind the seat. The central bow includes telescoping elements which allow it to be shortened when in the lowered position.

Abstract: An apparatus and method for use on an engine to selectively isolate the oil pump assembly from the engine's lubricating system for indicating which of these is producing an oil pressure problem in the engine.