Saw chain installation & safety

Follow the manufacturer’s manual for your exact model, approved bar-and-chain combinations, protective equipment and maintenance procedures. This guide supplements those instructions.

Stop the engine and isolate the power source. Remove the battery or unplug electric equipment; follow the gasoline saw’s procedure to prevent accidental starting. Let the chain cool and wear protective gloves.

• Confirm the bar mount, tensioner location and oil passage match the saw.
• Match pitch and chain family to the drive sprocket and bar nose sprocket where fitted.
• Match drive-link gauge to the guide-bar groove.
• Confirm the required drive-link count.
• Inspect the chain, rails and sprockets for damage and excessive wear.
• Never modify a component to force an incompatible fit.

Along the top of the guide bar, sharp cutting edges face forward toward the bar nose, away from the saw body. Compare with the saw’s direction marking or manual before operation.

Adjust a cool chain using the model-specific tensioning procedure. Drive links must seat correctly in the groove, and the chain must move as the manual specifies without binding.

Heat expands the chain during cutting. If it becomes loose, stop and allow it to cool before readjusting. Tightening a hot chain to its cold setting can overload parts when it contracts.

Check frequently, especially after fitting a new chain. Follow the manual for fastening torque, tensioner operation and any shutdown tension relief. Do not apply a universal gap measurement to every saw.

Use the bar-and-chain lubricant specified for your equipment. Keep the oil feed and groove clear, and check oil delivery using the manufacturer’s safe procedure.

Do not continue cutting with a dry or overheating chain. Resolve the lubrication problem before resuming work.

Cracked links, loose rivets, damaged rails, binding or unexplained vibration require attention. Do not operate the saw until the cause has been assessed.

Use the required protective equipment, maintain safe working distances and work within your training. Contact a qualified service technician if safe installation cannot be confirmed.