Abstract: A number of embodiments of mounting arrangements for the pressure sensor of a control for the fuel injection system of a two cycle crankcase compression internal combustion engine. The pressure sensor is mounted in such a way as to avoid the likelihood of the pressure signal being deteriorated due to fuel and lubricant accumulation and deterioration thereon. In some embodiments, this is done by an insulated mouting and in others this is done by positioning the pressure sensor in a scavenge passage to the engine. In the scavenge passage mounting arrangements, insulation is also employed.

Abstract: An improved engine and transmission casing assembly for a motorcycle that is made up of three major components. A first casing forms the engine and a portion of the crankcase for the engine. A second casing mates with the first casing and with it rotatably journals a pair of parallel crankshafts and further defines a transmission casing. The transmission casing is defined by a cavity that contains primary and secondary shafts and interengaging gears and which opens through one face of the second casing for insertion of the gears and shafts through this opening. This opening is closed by a cover plate which in part journals the transmission shafts.

Abstract: A motorcycle having a V4 crankcase compression, two-cycle internal combustion engine having an improved, compact induction system. The induction system for the cylinders of one bank discharges directly into the crankcases of those cylinders and is fed with a pair of carburetors through an induction system which induction system is positioned at least in part in the area between the banks of cylinders. The carburetors are disposed at least in part at the sides of the engine. The cylinders of the other bank are supplied with a charge indirectly to their crankcases through a similarly configured induction system. The induction system of one bank has its charge forming devices positioned above the charge forming devices of the other bank.