DEWALT 20V cordless pole saw troubleshooting starts with a few simple checks: confirm the battery is installed correctly, the lock button is actuated, and the pole connections are tight. Before inspecting or adjusting the saw, remove the battery. [1] You may also find this useful: DEWALT 20V Cordless Pole Saw: Uses, Fit, and Limits.
If the saw will not start, work through those checks in that order rather than forcing the trigger or trying to take the tool apart. A battery that is not installed properly, a lock button that has not been actuated, or pole connections that are loose can each explain a no-start problem. [1]
With the battery out, make sure the battery pack sits correctly in its slot and look over the pole joints for a secure fit. Then reinstall the battery and use the lock button and trigger as directed in the tool manual. [1]
Keep this check focused on starting the saw: for example, if the battery is in place but the motor still does not respond, revisit the lock button and pole connections before repeating the test. Follow the manual’s operating steps, and do not force a connection or control that does not feel right. If the saw still will not start after these basic checks, stop troubleshooting and consult the manual or an authorized service provider.
What to check when the saw will not start
A DEWALT 20V pole saw that will not start may have a battery, lock-button, or pole-connection issue, so check those points before seeking service. The troubleshooting list identifies an improperly installed or uncharged battery, a lock button that has not been actuated, and pole connections that are not properly tightened as possible causes. [1] Related reading: DEWALT 20V Cordless Pole Saw Chain Replacement.
Check the battery
Confirm that the battery is charged and fully seated in the saw; an uncharged or improperly installed pack is listed as a possible reason the saw will not run. [1] If the pack seems loose or does not sit as expected, follow the manual’s instructions for installing it rather than forcing it into place. [1]
Look over the battery contacts for visible dirt or corrosion, since either can interfere with the connection. [2] For example, if the contacts look dirty, do not assume the battery itself has failed; check the manual for the appropriate cleaning procedure before trying again.
Check the lock button and pole connections
Make sure you actuate the lock button as directed in the manual; a lock button that has not been actuated is listed among the possible reasons the saw will not start. [1] If you are unsure of the sequence, use the manual’s control instructions rather than repeatedly guessing at the controls.
Check that the pole connections are properly tightened, since loose connections are also listed as a possible cause of a no-start problem. [1] For instance, if the pole sections feel loose at their joint, consult the manual’s assembly directions and confirm the connection is secure before trying the saw again.
If it still will not start
If the battery, lock button, and pole connections all check out but the saw still will not start, stop troubleshooting and consult the manual or an authorized service provider. Avoid taking apart electrical components to look for a fault; use the manufacturer’s service guidance instead.
Why the chain may not move or cut well
If the motor runs but the chain does not move or cut well, treat it as a chain or bar issue—not a no-start problem. If the motor does not run, handle that separately; the manual’s listed no-start checks include battery installation and charge, the lock button, and pole connections. [1]
With the battery removed, look along the guide bar and around the chain for visible debris, damage, or anything that could block movement. Never touch or inspect the chain while the battery is installed. If you find a jam, do not try to force the chain around by hand; clear only what you can safely reach with the battery out, and stop if the obstruction remains.
For a chain that moves but cuts poorly, check for visible damage and review the chain’s movement along the bar. Do not assume that extra tension or oil will fix the problem. Follow the manual’s procedures for checking chain tension, lubrication, and maintenance instead of guessing at settings; the manual is the reference for servicing this saw. [1]
A chain that binds, appears damaged, or moves unpredictably is a reason to stop using the saw. For example, do not keep cutting if the chain repeatedly stalls in a cut or jumps instead of tracking smoothly along the bar. Leave the battery removed while you decide on the next step, and use the manual’s maintenance guidance rather than dismantling parts or improvising an adjustment.
If the chain and bar look clear and intact but cutting remains poor, pause and review the maintenance steps in the manual before trying again. If the chain still binds or behaves erratically, discontinue use and arrange qualified service. A short inspection is safer than pushing through a cut with a chain that is not moving normally.
Try these fixes in order
Switch off the saw and remove the battery before inspecting or adjusting anything. Set the saw on a stable surface so it cannot roll or shift while you work. Keep your hands clear of the chain, and do not troubleshoot with the battery installed.
Charge and reseat the battery, then look over its contacts. Check for visible dirt or corrosion, which can interfere with the connection. [2] If the contacts look dirty, do not scrape or poke at them with a metal tool; use the care instructions in the manual. Once the battery is charged, press it into place until it is seated securely.
Reconnect and tighten the pole sections, making sure the connectors align as the manual describes. A loose pole connection is one of the listed reasons a saw may not start. [1] Bring the sections together without forcing them; if a connector does not line up, stop instead of trying to pull it into position. Check that each connection is secure before moving on.
Reinstall the battery and test the lock button and trigger as directed in the manual. The troubleshooting list identifies an unactuated lock button and an improperly installed or uncharged battery among possible causes of a no-start problem. [1] Keep the saw pointed away from yourself and others while testing it, and follow the manual’s operating sequence rather than holding or bypassing a control.
If the problem remains, stop using the saw and seek service instead of dismantling electrical parts. This is the safer next step if the checks above do not restore operation. Do not open the electrical housing or try to repair internal wiring; leave that work to qualified service personnel.
Work through one check at a time, then test only after you have reassembled the saw as directed. For example, if it still will not start after you reseat the battery and secure the pole sections, do not keep cycling the trigger or take the saw apart. Stop and arrange service.
When should you get professional help?
Treat visible damage, unsafe assembly, or a problem that remains after basic checks as a reason to stop and get professional help. Continuing to test the saw can turn a repairable issue into a safety risk, especially if the pole joint or cutting parts do not behave as expected.
Stop if assembly does not feel secure
Do not try to use the saw if a pole connection will not assemble securely or appears misaligned. A product-page report describes holes in the center extension pole connector and pole that may not line up; do not force parts together to make them fit. [3]
If you cannot tell whether a connection is seated correctly, leave the saw off and ask DEWALT service or a qualified repair professional to assess it. Do not treat a connection that seems loose, crooked, or difficult to assemble as something to work around.
Stop at damage or unusual binding
Stop immediately if you notice cracked, bent, or otherwise visibly damaged parts, or if the saw binds unusually during use. Do not keep cycling the trigger to see whether the problem clears, and do not make a cut while the cause is uncertain.
For example, if the pole shifts at a joint or a moving part catches instead of operating smoothly, set the saw aside and arrange an inspection. Keep it out of use until the issue is identified and addressed.
Ask for service when checks do not solve the fault
If the basic checks do not restore operation, consult the instruction manual or contact authorized service rather than opening electrical components or attempting an improvised repair. The troubleshooting guide lists battery installation, charge, lock-button actuation, and tightened pole connections among possible causes of an operating problem. [1]
When you contact service, describe what the saw does, when the problem occurs, and what you observed—such as a pole joint that will not align or a part that binds. This gives the technician a clearer starting point and helps you avoid further testing that could worsen the fault.
If you are unsure whether the saw is safe to assemble or operate, err on the side of leaving it off and getting it checked. Do not resume work until the connection or fault has been resolved.
Common troubleshooting questions
Why is my saw not starting even though the battery is charged?
A charged battery does not rule out a seating issue, an unpressed lock button, or loose pole connections; those are listed as possible no-start causes in the saw’s troubleshooting guide. [1] Check each item against the manual’s directions rather than repeatedly pulling the trigger. For example, if the battery looks installed but the saw remains silent, remove and reseat it, then confirm the lock button and pole joints are set as directed.
If the basic checks do not help, avoid taking apart electrical components. Use the manual’s troubleshooting steps or contact service for further help.
What if the lock button or trigger seems not to respond?
Check that you are using the lock button and trigger in the sequence described by the manual. [1] A lock button that has not been actuated is listed among the possible reasons the saw will not start. [1] If the controls still do not work after you follow the manual, stop testing and seek service instead of trying to bypass a control.
What should I do if the pole connector or holes do not line up?
Do not force the pieces together if a connector or its holes will not align. A report describes holes in the center extension pole connector and pole that do not line up for assembly. [3] Stop, keep the saw out of use, and contact DEWALT support or service to ask how to proceed.
For instance, if the connector only seems to fit when you push hard or twist the pole, do not treat that as a secure connection. Do not drill, bend, or modify the parts to make them fit; get the assembly checked instead.
What if tightening the pole sections does not solve the problem?
Pole connections that are not properly tightened are listed as a possible cause of a saw that will not start. [1] Follow the manual’s assembly instructions and stop if the joints will not tighten normally or the holes remain out of line. Contact DEWALT support or service rather than forcing a connection or continuing to operate the saw.
A connection that looks close is not a reason to test-run the saw. Wait until the pole sections can be assembled as directed and securely joined.
Get the saw running safely again
If your DEWALT 20V pole saw still will not run after basic checks, stop troubleshooting and arrange service rather than forcing it to operate. Battery installation, charge, the lock button, and tight pole connections are common causes of a no-start problem. [1]
Before you inspect or adjust anything, switch the saw off and remove the battery. Keep it out while you check that the battery is seated, the lock button moves as expected, and the pole sections fit securely; do not test the saw with a loose or uncertain connection.
If the battery is not seated or charged, correct that first; if the lock button was not actuated, follow the tool manual before trying the trigger again. [1] For example, if the saw starts only after you press the button as directed, avoid changing other parts until you know whether the simple check solved the problem.
A pole connection that will not fit securely is a reason to stop, not to force the pieces together. Check the manual’s assembly instructions, and do not use the saw if the sections remain loose or misaligned. If you cannot confirm that the connection is secure, contact DEWALT support or a qualified service provider.
After the basic checks, test only when the saw is fully assembled and you can hold it safely. If it still fails to start, or if assembly looks unsafe, leave the battery out and seek professional service. Avoid opening electrical parts or improvising a repair; a saw that starts intermittently is not ready for use until the fault is resolved.
The key is to stop at safe, straightforward checks: battery fit and charge, the lock button, and secure pole connections. If those do not restore reliable operation—or the pole will not assemble safely—keep the battery removed and arrange service.