What component of a chainsaw is responsible for holding and carrying the chain?

The guidebar is the component of a chainsaw that holds and supports the chain as it moves around during operation. It is essential for maintaining the correct alignment of the chain, which allows the cutting teeth to effectively engage with the wood being cut. The guidebar is typically made of a strong material to withstand the forces exerted during cutting and is designed to have a groove along its length for the chain to fit into securely. Proper maintenance and care of the guidebar, including regular cleaning and checking for wear, are crucial to ensure optimal performance of the chainsaw.

The other options, while related to the chainsaw's function, do not serve the purpose of holding or carrying the chain. The oil filter is primarily involved in maintaining clean oil flow to keep the engine running smoothly. The depth gauge, part of the chain itself, helps control the depth of each cut but does not hold the chain. The engine case houses the engine components and protects them, but it does not interface directly with the cutting chain.