Abstract: A toroidal type continuously variable transmission has an input side disk, an output side disk, a pivot shaft, at least one of supporting member, a power roller and a loading cam device. The loading cam device has a cam plate, a first cam surface and a second cam surface, a plurality of roller clamped between the one disk and the cam plate and a retainer rollably retaining the each of the roller. The retainer is made of carburized or carbonitriding steel, the retainer has a hardened surface layer having a hardness Hv of 653 or more and a thickness of the hardened surface layer ranges from 0.2 to 0.7 mm.

Abstract: An evaporative emission system for an engine includes a float chamber of a carburetor connected to a charcoal canister via an inlet port and an outlet port. The emission system is characterized in that an electromagnetic opening and closing mechanism for actuating a valve which selectively opens and closes the inlet port is controlled by a temperature-sensitive switch so that evaporation of low-boiling-point components of fuel and absorption thereof by the charcoal is prevented at low temperatures even in case of long periods during which the engine is not running. The starting characteristics of the engine are thus maintained.