Describe the safe method to remove a jammed chain.

Describe the safe method to remove a jammed chain.

• A. Stop the engine, engage the chain brake, disconnect the spark plug if necessary, and carefully remove the obstruction without touching moving parts.
• B. Push the chain while the engine is running to free the jam.
• C. Remove the spark plug and start the engine to jolt the chain free.
• D. Apply lubricant and pull violently.

Answer: (A)

The essential rule is to keep the chain from moving while you clear the jam. Start by turning off the engine so there’s no power driving the chain. Engage the chain brake to lock the chain in place, which provides a built-in safety barrier against startup or rotation. If needed, disconnect the spark plug so the saw cannot start while you’re working on it. With the saw secured, carefully remove the obstruction, and keep your hands and fingers away from the bar and moving chain. Use a tool if you need to pry or lift the jammed material, and don’t touch or fiddle with moving parts. This approach is safer because it eliminates the risk of the chain grabbing you or kicking back while you’re trying to clear the jam. Other methods that involve the engine still running, trying to jolt the chain free, or applying lubricant while pulling hard do not address the immediate danger of a moving chain and can lead to severe injury.

The essential rule is to keep the chain from moving while you clear the jam. Start by turning off the engine so there’s no power driving the chain. Engage the chain brake to lock the chain in place, which provides a built-in safety barrier against startup or rotation. If needed, disconnect the spark plug so the saw cannot start while you’re working on it. With the saw secured, carefully remove the obstruction, and keep your hands and fingers away from the bar and moving chain. Use a tool if you need to pry or lift the jammed material, and don’t touch or fiddle with moving parts.

This approach is safer because it eliminates the risk of the chain grabbing you or kicking back while you’re trying to clear the jam. Other methods that involve the engine still running, trying to jolt the chain free, or applying lubricant while pulling hard do not address the immediate danger of a moving chain and can lead to severe injury.