Husqvarna 525LST 25.4 cc 17 in Gas String Trimmer SHAFT BEARING WORN Error Fix: Drive Shaft Bearing Worn

The internal drive shaft bearing is worn causing grinding noise, vibration, or head wobble — the 525LST has a straight shaft with an internal flex cable and bearings that support shaft rotation; worn bearings near the head cause the trimmer head to wobble and vibrate; this is a disassembly repair requiring the lower shaft housing to be opened for bearing replacement

Medium severity2 fixes available✨ Free fix available

Quick Answer

Error SHAFT BEARING WORN on the Husqvarna 525LST 25.4 cc 17 in Gas String Trimmer means: Drive Shaft Bearing Worn. The top-ranked community fix is “Replace Drive Shaft Bearings by Disassembling Lower Shaft Housing” (hard difficulty, ~120 min, DIY cost: $15-$25). 2 community-ranked fixes available below.

Published February 2026 · 2 fixes · string trimmer

Content is based on manufacturer service documentation, community repair experience, and OEM technical bulletins. Always verify with your owner's manual.Learn about our editorial standards.

When to Call a Professional

While many string trimmer repairs can be done safely at home, consider hiring a qualified technician if:

The repair involves electrical wiring, gas lines, or refrigerant
You've tried the top-ranked fix and the error persists
You smell gas, see sparking, or notice water leaking
The repair requires specialized tools you don't have
Your appliance is still under manufacturer warranty

Average professional repair cost for this issue: $120-$180.

Other Husqvarna 525LST 25.4 cc 17 in Gas String Trimmer Error Codes

AIR FILTER

Air Filter Clogged

2 fixes

CLUTCH SLIP

Clutch Slipping Under Load

2 fixes

CORD WON'T RETRACT

Pull Cord Will Not Retract

Engine Dies at Idle

Exhaust Port or Muffler Blocked

Fuel System Leak

Trimmer Head Spins at Idle

2 fixes

HIGH VIBRATION

Excessive Vibration

2 fixes

People Also Ask About Husqvarna 525LST 25.4 cc 17 in Gas String Trimmer Error SHAFT BEARING WORN

What does error code SHAFT BEARING WORN mean on a Husqvarna 525LST 25.4 cc 17 in Gas String Trimmer?

Error code SHAFT BEARING WORN on the Husqvarna 525LST 25.4 cc 17 in Gas String Trimmer means: Drive Shaft Bearing Worn. The internal drive shaft bearing is worn causing grinding noise, vibration, or head wobble — the 525LST has a straight shaft with an internal flex cable and bearings that support shaft rotation; worn bearings near the head cause the trimmer head to wobble and vibrate; this is a disassembly repair requiring the lower shaft housing to be opened for bearing replacement

How do I fix error code SHAFT BEARING WORN on my Husqvarna 525LST 25.4 cc 17 in Gas String Trimmer?

The most successful fix is "Replace Drive Shaft Bearings by Disassembling Lower Shaft Housing" (hard difficulty, ~120 minutes). Estimated DIY cost: $15-$25. HomeMD has 2 community-ranked fixes for this error.

Is error code SHAFT BEARING WORN on a Husqvarna 525LST 25.4 cc 17 in Gas String Trimmer serious?

This error is rated medium severity. It should be addressed soon, but your appliance may still function in a limited capacity.

Can I fix Husqvarna 525LST 25.4 cc 17 in Gas String Trimmer error SHAFT BEARING WORN myself?

Yes — the top-ranked community fix ("Replace Drive Shaft Bearings by Disassembling Lower Shaft Housing") is rated hard difficulty and takes about 120 minutes. Tools needed: T25 Torx screwdriver, Needle-nose pliers, Bearing puller, Rubber mallet, Bearing press (optional).

How much does it cost to repair Husqvarna 525LST 25.4 cc 17 in Gas String Trimmer error SHAFT BEARING WORN?

DIY cost: $15-$25. Professional repair typically costs $120-$180. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the Husqvarna 525LST 25.4 cc 17 in Gas String Trimmer have?

The Husqvarna 525LST 25.4 cc 17 in Gas String Trimmer has 8 other known error codes, including: AIR FILTER (Air Filter Clogged), CLUTCH SLIP (Clutch Slipping Under Load), CORD WON'T RETRACT (Pull Cord Will Not Retract), DIES AT IDLE (Engine Dies at Idle), EXHAUST CLOGGED (Exhaust Port or Muffler Blocked), and 3 more.

What other error codes does the Husqvarna 525LST 25.4 cc 17 in Gas String Trimmer have?

The Husqvarna 525LST 25.4 cc 17 in Gas String Trimmer has 8 other known error codes:

AIR FILTER — Air Filter Clogged (2 fixes)
CLUTCH SLIP — Clutch Slipping Under Load (2 fixes)
CORD WON'T RETRACT — Pull Cord Will Not Retract (2 fixes)
DIES AT IDLE — Engine Dies at Idle (2 fixes)
EXHAUST CLOGGED — Exhaust Port or Muffler Blocked (2 fixes)
FUEL LEAK — Fuel System Leak (2 fixes)
HEAD SPINS AT IDLE — Trimmer Head Spins at Idle (2 fixes)
HIGH VIBRATION — Excessive Vibration (2 fixes)

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