BLACK+DECKER Chainsaw Manuals

Chainsaw Will Not Start

• Battery not charged: Fully charge the BLACK+DECKER battery pack using the approved charger before operating the chainsaw.
• Battery not seated correctly: Remove and reinstall the battery until it locks securely into the battery compartment.
• Safety lockout not pressed: Follow the correct start sequence, usually involving the lock-off button and trigger switch.
• Chain brake engaged: Release the chain brake if your model includes a front hand guard chain brake system.
• Motor overload protection active: Remove the battery or unplug the tool, clear the obstruction, allow the motor to cool, and restart only after the bar and chain move freely.

Corded Electric Chainsaw Will Not Run

• No outlet power: Check the wall outlet, outdoor receptacle, breaker, GFCI outlet, and extension cord connection.
• Extension cord not rated correctly: Use an outdoor-rated extension cord with the correct gauge and length for the chainsaw.
• Cord connection loose: Make sure the plug and extension cord connection are fully seated and secured with the cord retainer if provided.
• GFCI tripped: Reset the GFCI after checking that the cord, plug, and chainsaw are dry and undamaged.
• Motor overloaded: Let the tool cool, sharpen the chain, reduce cutting pressure, and clear chips or debris from the bar and sprocket area.

Battery and Charging Problems

• Battery will not charge: Check the wall outlet, charger, battery contacts, battery temperature, and charger indicator lights.
• Short runtime: Fully charge the battery, sharpen the chain, reduce cutting load, and avoid forcing the saw through thick or hard wood.
• Charger light flashing: Follow the charger indicator guide in the manual to identify charging, temperature delay, or battery fault status.
• Battery becomes hot: Stop cutting, remove the battery, and allow it to cool before charging or continuing work.
• Wrong battery platform: Use only compatible BLACK+DECKER 20V MAX, 40V MAX, or model-specified battery packs and chargers.

Chainsaw Starts but Chain Does Not Move

• Chain brake engaged: Pull the front hand guard back toward the handle to release the chain brake before cutting.
• Chain tension too tight: Adjust the chain so it moves freely around the bar while still fitting securely in the bar groove.
• Bar and chain jammed: Remove the battery or unplug the tool, then clear wood chips, sawdust, dirt, or debris from the bar, sprocket, and chain path.
• Drive sprocket worn: Inspect the sprocket for grooves, damage, or uneven wear that prevents smooth chain movement.
• Chain installed incorrectly: Confirm the cutting teeth face forward on the top side of the guide bar.

Chain Will Not Cut Properly

• Chain is dull: Sharpen or replace the chain if it produces fine dust instead of chips or requires heavy pressure to cut.
• Chain installed backward: Reinstall the chain so the cutters face forward on the top of the guide bar.
• Wrong chain type: Use a chain with the correct pitch, gauge, and drive-link count specified for the bar and sprocket.
• Depth gauges too high: File the depth gauges according to the chain specifications if the chain cuts slowly after sharpening.
• Guide bar worn: Inspect the bar rails, bar groove, nose sprocket, and oil holes for wear, burrs, or blockage.

Chain Comes Loose or Jumps Off

• Chain tension incorrect: Adjust chain tension before use and recheck after the first few cuts with a new chain.
• Side cover or bar nut loose: Tighten the side cover, chain tension knob, or guide bar nut securely after adjusting chain tension.
• Drive links damaged: Inspect chain drive links for burrs, bending, cracking, or damage after derailment.
• Guide bar worn: Replace the guide bar if the rails are spread, uneven, pinched, or badly worn.
• Sprocket worn: Replace a worn drive sprocket that no longer supports the chain correctly.

Bar and Chain Oiling Problems

• Oil tank empty: Fill the oil tank with proper bar and chain oil before cutting.
• Oil hole blocked: Clean the guide bar oil hole, bar groove, and oil outlet area behind the bar.
• Wrong oil viscosity: Use suitable bar and chain oil for the temperature and cutting conditions.
• Oil cap not sealed: Check the oil cap, gasket, tank opening, and venting area for leaks or poor sealing.
• Oil flow reduced: Remove the battery or unplug the saw and clean sawdust buildup from the side cover, oil outlet, bar pad, and sprocket area.

BLACK+DECKER 20V MAX and 40V MAX Chainsaw Problems

• Power feels weak: Check battery charge, chain sharpness, chain tension, bar lubrication, and cutting technique.
• Tool stops during cutting: Release the trigger, remove the battery, clear the bar and chain, and reduce cutting pressure.
• Runtime is short: Use a fully charged battery with adequate capacity and avoid cutting with a dull or overly tight chain.
• Battery drains quickly: Heavy hardwood, dull chain, low oil flow, and high chain tension can reduce runtime.
• Excessive heat near bar: Check lubrication, bar groove cleanliness, chain sharpness, and chain tension.

BLACK+DECKER Pole Saw and Pruning Saw Problems

• Pole sections feel loose: Stop using the tool and check extension locks, collars, couplers, and shaft alignment.
• Pole saw difficult to control: Use both hands, maintain stable footing, and avoid overreaching or cutting directly overhead.
• Branch pinches the bar: Use proper relief cuts and do not twist the saw while the chain is in the cut.
• Pruning saw binds: Let the chain reach full speed and support the branch to reduce pinching.
• Cut is rough: Replace or sharpen the chain and confirm the correct chain direction and tension.

Alligator Lopper Problems

• Jaws will not close correctly: Remove the battery or unplug the tool, then clear wood chips, bark, or debris from the jaw and chain area.
• Chain does not move: Check chain tension, sprocket area, jaw obstruction, and power source connection.
• Tool stalls in branch: Release the trigger, remove the tool carefully, sharpen the chain, and avoid cutting beyond the rated branch size.
• Cutting is slow: Inspect chain sharpness, chain direction, bar lubrication, and whether the branch is pinching the chain.
• Excessive vibration: Check the chain, bar, jaw assembly, fasteners, and cutting technique before continuing.

Noise, Vibration and Cutting Performance Problems

• Excessive vibration: Inspect the chain, guide bar, drive sprocket, bar nuts, side cover, and chain tension.
• Rattling noise: Check the side cover, bar nut, chain catcher, handle hardware, pole saw joints, and battery fit.
• Burning smell: Stop cutting and check chain sharpness, chain tension, bar lubrication, motor overload, and cutting pressure.
• Saw pulls to one side: Sharpen cutters evenly and inspect the guide bar rails for uneven wear.
• Bar overheats: Check oil flow, bar groove cleanliness, chain tension, chain sharpness, and cutting technique.

Routine Maintenance Tips

• Remove power before service: Always remove the battery pack or unplug the power cord before adjusting chain tension, replacing the chain, cleaning the bar, or performing maintenance.
• Check chain tension: Inspect chain tension before each use and after the first few cuts with a new chain.
• Maintain bar oil: Fill the oil tank before cutting and clean the oil passages regularly.
• Clean after use: Remove sawdust from the side cover, sprocket area, bar groove, oil outlet, chain brake area, cooling vents, and pole saw joints.
• Prepare for storage: Remove the battery or disconnect power, clean the tool, lubricate the bar and chain, cover the bar, and store the chainsaw in a dry location.

Safety note: Always remove the battery pack or unplug the chainsaw, engage the chain brake where equipped, allow the chain to stop completely, and wear proper protective equipment before adjusting chain tension, replacing the chain, cleaning the bar, or performing maintenance.