On many horizontal-shaft, four-stroke engines, where is the oil dipper typically found?

The oil dipper is typically found on the rod cap of horizontal-shaft, four-stroke engines. This design allows the dipper to scoop up oil from the engine's oil sump as the engine rotates. The oil is then splashed onto various engine components for lubrication, which is crucial for reducing friction and wear during operation. The placement of the dipper on the rod cap ensures effective oil circulation throughout the engine, helping maintain optimal operating temperature and prolonging engine life.

The other components mentioned, such as the camshaft, piston, and governor, do not serve the purpose of collecting and distributing oil in the same manner, which is why they are not the correct locations for the oil dipper in these engines.