The battery is not charged.
The battery is not inserted correctly.
The chainsaw is not turned on.
The chainsaw is jammed.
The chainsaw is overheating.

Chainsaws produce a lot of vibration, which would make it difficult to control the cut and could potentially cause injury. Additionally, the teeth on a chainsaw are designed for cutting through wood, not meat, and would likely tear the meat rather than produce a clean cut.

would dull the chainsaw teeth and contaminate the meat with bacteria from the chainsaw chain.

Chainsaw blade is loose.
Chainsaw blade is not installed correctly.
Chainsaw blade is damaged.

Your chainsaw chain keeps getting loose because the chain tension is too low. To fix this, tighten the chain tensioner until the chain is snug against the bar.

Chainsaw chain keeps tightening

Too much tension on the chain
Worn or damaged chain sprocket
Bent or damaged chain bar

Chainsaw chains stretch due to the tension of the chain and the force of the saw blade cutting through wood. Over time, the chain will stretch and become loose, which can cause the saw to work less efficiently and be more difficult to control.

Chainsaw chain keeps coming loose

Overtightened bar nuts
Worn or damaged chain
Bent or damaged bar
Loose or missing chain tensioner
Incorrect bar-to-chain ratio

Chain saw chain keeps falling off because of loose or missing nuts, worn or damaged chain, or dull chain.

Chainsaw blade keeps tightening because the chain brake is engaged, causing the brake band to push against the bar nose and pull the chain tight.