Internal combustion engine

摘要

An engine is described having a hole (40) for a dipstick (22) which is closed by a cap (12) from which the dipstick (22) depends. The engine body is formed with an overhanging lip (34) adjacent the mouth of the hole (40), and the cap (12) comprises a spigot (19) rotatably received in the mouth of the hole (40) and a flange (16) extending radially outwards from the spigot to cover the mouth of the hole (40). The flange (16) is non-circular so that by rotation of the cap relative to the hole, a radially projecting portion (18) of the edge of the flange (16) may be selectively engaged beneath the overhanging lip (34) to prevent axial displacement of the cap and the dipstick relative to the engine body. <IMAGE>