Abstract: A shut-off device for use with an internal combustion engine having an electric ignition comprises a switch having first and second states, connected to the engine ignition in such a way that the ignition current is not inhibited when the switch is in its first state but is inhibited when the switch is in its second state. The device further has means for changing the switch from its first state to its second state and means for automatically maintaining the switch in its second state for a predetermined interval of time sufficient to allow the engine to die.

Abstract: An improved engine mount for a snowmobile has mounting means for securing the output end of the engine to a substantially vertical side frame. The mounting means comprises rigid inner and outer mounting members spaced radially of, and surrounding, the output shaft of the engine and a resilient intermediate member trapped between the inner and outer mounting members.