An air cleaner includes: a frame member equipped at an intake port of a carburetor and provided with an air inlet port； a filter held by a holding part included in the frame member； a lid member configured to cover a front face of the filter； and a screw with a knob, the screw being configured to connect the frame member and the lid member together. The frame member is provided with an insertion hole, where the screw with the knob is inserted, on the outer side of the holding part. The lid member includes a part to be connected, to which the screw with the knob is connected, the screw being inserted into the insertion hole from a side close to the carburetor. A knob part of the screw with the knob is disposed on the inner side of a circumscribed line between the lid member and the engine.
