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Husqvarna525LST
Petrol 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.
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 76-page document we read on 10 September 2026.
The engine does not start 24 lines
Husqvarna sets this out as a table with the columns “Check”, “Possible cause”, “Procedure”. We print the lines in the maker’s order.
- Stop switch.
- The stop switch is in the stop position.
- Set the stop switch to the start position.
- Starter pawls.
- The starter pawls cannot move freely.
- Remove the starter cover and clean around the starter pawls.
- Let an approved service agent help you.
- Fuel tank.
- Incorrect fuel type.
- Drain the fuel tank and fill with correct fuel.
- Spark plug.
- The spark plug is dirty or wet.
- Make sure that the spark plug is dry and clean.
- The spark plug electrode gap is incorrect.
- Clean the spark plug. Make sure that the electrode gap is correct. Make sure that the spark plug has a suppressor.
- Refer to technical data for correct electrode gap.
- The spark plug is loose.
- Tighten the spark plug.
- Carburetor.
- The idle speed is incorrectly adjusted.
- Adjust the idle speed.
- Fuel filter.
- The fuel filter is clogged.
- Replace the fuel filter.
The engine starts but stops again 12 lines
Husqvarna sets this out as a table with the columns “Check”, “Possible cause”, “Procedure”. We print the lines in the maker’s order.
- Fuel tank.
- Incorrect fuel type.
- Empty the fuel tank and fill it with correct fuel.
- Air filter.
- The air filter is clogged.
- Clean the air filter.
- Carburetor.
- The engine does not operate correctly at idle speed.
- Let an approved service agent help you.
- Fuel filter.
- The fuel filter is clogged.
- Replace the fuel filter.
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.
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 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.
Manuals & documents
We link the maker’s documents instead of re-hosting them, so you always open the version Husqvarna is publishing today.
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 →
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Our sources
- Husqvarna support 16 specification fields and 21 parts with the maker’s code and list price, read on 10 September 2026.
- Operator's Manual Published: 1/22/2026 2.94 MB, EN, ES, FR 76 pages, read on 10 September 2026. The troubleshooting chapter quoted above. This document also covers 2 other models.
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