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Fix a pole saw that will not cut

We'll rule out chain tension, dull chain, bar oil, and power issues—then isolate the cause or tell you when to call a mechanic.

Troubleshooting · Home appliances
20–60 min
What you'll need
  • Round file and file guide (for chain sharpening)
  • Screwdriver or wrench (for tension adjustment)
  • Bar oil
  • Replacement chain or bar (if damaged)
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Steps

Goal: Confirm the motor runs but branches are not cut, then check chain, tension, and bar oil.

  • Start the motor and run the chain against a branch. Note whether it cuts, produces fine dust, or does not bite.
  • Good: Motor runs but chain does not cut—chain or bar issue. Proceed to Check chain.
  • Bad: Motor does not run—check power, cord, or engine. See Electric — power check for electric models.

Check chain

Goal: Inspect chain tension and sharpness.

  • Disconnect power before any work on the chain.
  • Check chain tension—snug against the bar but with slight slack when cold. Adjust the tension screw.
  • Inspect the cutters. Sharpen with a round file and file guide at the angle in your manual.
  • Good: Chain is sharp and tensioned. Proceed to Check bar oil.
  • Bad: Dull or loose—sharpen or adjust.

Check bar oil

Goal: Confirm bar oil flows to the chain and bar.

  • Check the bar oil tank is full. Run the saw at full throttle and point the tip at a light surface—you should see a thin line of oil.
  • Clean the bar oil holes and groove if blocked.
  • Good: Oil flows. Proceed to Check bar.
  • Bad: No oil—clean passages or the oil pump may have failed.

Check bar

Goal: Inspect the bar for wear.

  • Inspect the bar for wear, bent rails, or a damaged groove. Replace if worn past the marks.
  • Good: Bar is in good condition. Retest cutting.
  • Bad: Bar worn or damaged—replace.

Electric — power check

Goal: For electric and cordless saws, confirm power and cord.

  • Check the outlet with another device. Inspect the cord for damage.
  • Cordless: check battery charge and contacts.
  • Good: Power is good and the motor runs at full speed.
  • Bad: Cord damaged or battery dead—fix or replace.

When to get help

Call a mechanic if:

  • The chain is sharp and tensioned correctly but still does not cut.
  • The bar is severely worn or damaged.
  • The oil pump has failed.
  • You are not comfortable working on the pole saw.

Verification

  • The motor runs and the chain spins when you pull the trigger or throttle.
  • The chain cuts wood cleanly and produces chips, not fine dust.
  • Bar oil flows and the chain stays cool.

Escalation ladder

Work from the device outward. Stop when the problem is fixed.

  1. Confirm symptom Verify motor runs but branches are not cut; rule out motor problems.
  2. Chain tension Adjust chain tension per the manual.
  3. Chain sharpness Sharpen the chain with a round file and file guide.
  4. Bar oil Check oil level and flow; clean oil passages.
  5. Power (electric) Check cord, outlet, or battery.
  6. Call a pro Chain sharp, tension good, oil flows—still no cut; oil pump or bar damaged.

What to capture if you need help

Before calling support or posting for help, have these ready. It speeds everything up.

  • Motor runs or not
  • Chain spins or not
  • Chain condition (dull, loose)
  • Bar oil flow
  • Electric, cordless, or gas
  • Steps already tried

Does the motor run but the chain does not cut wood?

Start the motor and run the chain against a branch. Check if it cuts or just spins.

Start the motor and run the chain against wood. Good: Motor runs but chain does not bite or produces fine dust—chain or bar issue. Bad: Motor does not run—different problem (power, cord, battery, or gas engine).

Yes No

You can change your answer later.

Does the chain spin when you pull the trigger or throttle?

The chain should spin at full speed.

Pull the trigger or throttle. Good: Chain spins—dull chain, tension, or bar oil. Bad: Chain does not spin—clutch or drive fault.

Yes No

You can change your answer later.

Is the chain sharp and properly tensioned?

A dull chain produces fine sawdust. Loose chain cuts poorly.

Check chain sharpness and tension. Sharpen if dull; adjust tension per manual. Good: Chain sharp and tensioned. Bad: Dull or loose—sharpen or adjust.

Yes No

You can change your answer later.

Sharpen chain and adjust tension

Sharpen with round file and file guide. Adjust tension per manual. Retest cutting.

Done

Is bar oil flowing?

Low or blocked oil overheats the chain and bar.

Check oil level. Run at full throttle and point tip at light surface—look for oil line. Clean oil holes if blocked. Good: Oil flows. Bad: No oil—clean passages or check oil pump.

Yes No

You can change your answer later.

Fix bar oil

Fill oil tank. Clean bar oil holes and groove. If still no flow, oil pump may have failed—call a pro.

Done

Is the bar in good condition?

A worn or damaged bar causes poor cutting.

Inspect bar for wear, bent rails, damaged groove. Replace if worn past marks. Good: Bar good. Bad: Bar worn or damaged—replace.

Yes No

You can change your answer later.

Replace bar

Replace the bar with a matching size. Retest cutting.

Done

Electric — Is power and cord OK?

Electric and cordless: check power source.

Check outlet, cord, and battery. Test with known-good outlet or battery. Good: Power OK—motor may have failed. Bad: Cord damaged or battery dead—fix or replace.

Yes No

You can change your answer later.

Fix power

Replace damaged cord. Charge or replace battery. Retest.

Done

Clutch or drive failed

Chain does not spin: clutch or drive may have failed. Call a mechanic.

Done

Call a mechanic

Chain sharp, tension good, oil flows, bar good—still no cut. Or motor does not run with good power. Call a mechanic.

Done

Reviewed by Blackbox Atlas

Frequently asked questions

Why would a pole saw run but not cut?
Common causes: dull chain, incorrect chain tension, low or blocked bar oil, or (electric) power or cord issues. A pole saw uses a chainsaw-style bar and chain. Dull chain produces fine sawdust; loose chain cuts poorly; low bar oil overheats the chain.
Can I fix a pole saw that will not cut myself?
Yes. You can sharpen the chain, adjust tension, and check bar oil with basic tools. Electric models: check the cord and outlet. Cordless: check battery charge. The procedure is similar to a chainsaw—round file for sharpening, tension adjustment per manual.
When should I call a mechanic for a pole saw that will not cut?
Call a mechanic if the chain is sharp and tensioned correctly but still does not cut; if the bar is damaged or the oil pump has failed; or if you are not comfortable working on the saw.

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