Husqvarna 525iLK: faults, parts & manual

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Trimmers & brushcutters — Husqvarna

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Husqvarna

525iLK

Battery grass trimmer. Spare parts with Husqvarna’s own order codes, and the troubleshooting chapter of the operator’s manual.

Photograph: a grass trimmer. We hold no photograph of this exact machine, and we would rather say so than pass one off.
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What actually breaks

Open the problem that matches yours. Everything inside comes from the troubleshooting chapter of the operator’s manual Husqvarna publishes for this model — a 56-page document we read on 10 September 2026.

Fault messages shown on the display 16 lines

Husqvarna sets this out as a table with the columns “Problem”, “Possible faults”, “Possible action”. We print the lines in the maker’s order.

  • Battery LED indicator flashes orange
  • Low battery voltage.
  • Charge the battery.
  • Error LED flashes red
  • Overload.
  • The cutting attachment is jammed. Stop the product. Remove the battery. Clean the cutting attachment from unwanted materials.
  • Temperature deviation.
  • Let the product cool down.
  • The power trigger and the activate button are pressed at the same time.
  • Release the power trigger and the product is active.
  • The product does not start
  • Dirt in the battery connectors.
  • Clean the battery connectors with compressed air or a soft brush.
  • Error LED is lit with red light
  • The product needs servicing.
  • Contact your servicing agent.

Why we quote instead of rewriting. The manual is laid out as a table. Read by machine, a PDF loses the boundaries between columns, and pairing a symptom with the wrong remedy would give you a page that is confidently wrong rather than obviously broken. So we keep the maker’s order and words, and tell you how the table is built. The manual itself is linked further down.

Parts & prices

Every code below is Husqvarna’s own, read from the maker’s parts pages for this exact model. The code is printed on the part itself — on a label, moulded into the plastic or stamped in the metal. Read it off the broken part and type it here to find it straight away.

BEVEL GEAR
537333801
🛒 Find this part
NUT
503856301
🛒 Find this part
CUP
537292601
🛒 Find this part
DRIVER ASSY
537234901
🛒 Find this part
CIRCLIP
735312810
🛒 Find this part
BALL BEARING
525831801
🛒 Find this part
BALL BEARING
738219800
🛒 Find this part
SCREW
503201501
🛒 Find this part
SCREW IHSCFM
503200725
🛒 Find this part
BALL BEARING
738219900
🛒 Find this part
BALL BEARING
738219902
🛒 Find this part
CIRCLIP
735311100
🛒 Find this part
CIRCLIP
735312510
🛒 Find this part
SCREW IHSCM
503202007
🛒 Find this part
SCREW ITXSCM
544218422
🛒 Find this part
SCREW IHSCFMO
503201412
🛒 Find this part
SCREW
591159801
🛒 Find this part
CLAMP
574306904
🛒 Find this part
CLAMP
574306905
🛒 Find this part
LABEL
544843301
🛒 Find this part

We hold no photograph of the individual parts: Husqvarna does not publish them, and we would rather say so than show you the wrong picture. Prices are the maker’s United States list prices on the day we read them — an order of magnitude, not a quote. The buttons search shops in your own country, and those shops pay us a commission.

Where to buy

The search opens in your own country’s shop, in that shop’s language, with our tracking — the shop pays us a commission, you pay the same price.

TOOLS FOR THE JOB

Tools you’ll need

Chosen for this family, not a generic list. Prices and availability come from the shop in your country, with our tracking.

Specifications

Copied field for field from the manufacturer’s own product page on 10 September 2026, in the maker’s units. We do not convert them: a rounded conversion is how a torque figure quietly becomes wrong.

Maximum rpm output shaft8,400 rpm
Motor typeBLDC (brushless)
Cutting width16.5 in
Weight (excl. battery and cutting equipment)5.29 lbs
Weight (excl. battery)5.29 lbs
Tube diameter0.945 in
Product size length35.4 in
Gear ratio1
Drive gear angle30 °
HarnessNot included
Saw bladeNot included
Trimmer headNot included
Grass bladeNot included
BatteryNot included
Battery chargerNot included
Number of batteries included0
Battery voltage40 V
Battery chemistryLi-Ion
Equivalent vibration level (ahv, eq) front handle1.4 m/s²
Equivalent vibration level (ahv, eq) rear handle1.5 m/s²
Sound power level, guaranteed (LWA)95 dB(A)
Sound pressure level at operators ear86 dB(A)

Manuals & documents

We link the maker’s documents instead of re-hosting them, so you always open the version Husqvarna is publishing today.

THE SAME BENCH

Other machines in this family

Machines in the same family for which we also have the maker’s codes, prices and troubleshooting chapter. The whole family →

Swipe for more →
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WHERE THIS COMES FROM, AND WHAT WE ARE MISSING

Our sources

What is missing, said plainly. We hold no photograph of this exact machine, no repair times and no failure statistics — nobody publishes those honestly. Prices are Husqvarna’s United States list prices and will differ in your country. We are not a dealer: we do not stock parts, and the buttons search shops that pay us a commission.

TroubleAtlas Technical Team · Compiled from manufacturer documents read on 10 September 2026 · Last checked 26 September 2026 · How we verify

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