It is an object of the invention to a battery mounted in a working machine in which a compact electric motor (131) for starting a compact engine can be driven smoothly and safely for a long term, and the battery is reduced in size and weight to the utmost....

An operation unit is provided with an engine operation box (12) storing therein a control operation portion controlling an opening degree of a throttle valve of an engine and a start switch terminal connected to a start motor starting the engine; a throttl...

The invention provides an operation unit of an engine provided with a throttle operating lever (11) operating a throttle valve of the engine from an idle position to a full-open position, two terminals (22, 23) connected to an inner side of a drive circuit...

An electric engine starter (100) in which downsizing and weight saving are improved to an extreme based on the rational design and by eliminating an unnecessary unit, wherein a battery is arranged outside the starter, a power accumulating unit (110) has a ...

In an insulator (21) inserted between a carburetor (30) and a cylinder (3) for a purpose of insulating heat, there are formed an intake passage (22) connected to the carburetor (30), and a pair of first air passages (23) connected to respective air flow pa...

The engine can improve a leading air suction efficiency, has a simple structure and a low cost. Accordingly, in a stratified scavenging two-stroke cycle engine provided with an exhaust port (22) and a scavenging port (21) which are connected to a cylinder ...