In a handheld type four-cycle engine, a valve operation mechanism includes a camshaft rotatably supported in a cylinder head so as to open and close an intake valve and an exhaust valve and a timing transmission placed on one side outside an engine main bo...

V-type internal combustion engine with a transmission fitted to a rear of said engine, wherein an accessory means is attached to at least one cylinder bank on the rear side of said engine. Vehicle comprising a vehicle body and a V-type internal combustion ...

In a handheld type OHV engine, an oil tank (13) is provided so as to be connected to one side wall running the length of a crankcase (6) and a cylinder block (7), the oil tank (13) houses oil mist generation means (36,37,38,39,40) to and a rotational movem...

A cylinder head includes a carrier member 50 integrally formed with a vertical wall portion 53 for supporting a camshaft 15, 16, a tappet guide 54 for containing a tappet 24 and a tappet-lubricating oil receiving portion 51 slanted around the tappet guide ...