To provide a power unit with an oil level gage inside in the cross direction, having small and compact construction with its size restricted in the cross direction.
The power unit PU comprises a hydraulic continuously variable transmission CVT having a swash plate plunger pump P of a fixed displacement type and a swash plate plunger motor M of a variable displacement type rotatably arranged coaxially and linked to each other via a hydraulic closed circuit, a transmission housing HSG storing the continuously variable transmission CVT, and the oil level gage 70 for checking the level of oil in the housing. A diameter reduced portion 20b is formed on the outer periphery of a portion supporting a pump swash plate member 21 in a pump casing 20 of the swash plate plunger pump P. The oil level gage 70 is provided with a gage portion 72 passing through the outer periphery or its vicinity of the diameter reduced portion 20b and extending to the bottom of the transmission housing.
KOYAMA SHINYA
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