🌿String Trimmer

FUEL LEAK

Husqvarna · 525LST 25.4 cc 17 in Gas String Trimmer

Husqvarna 525LST 25.4 cc 17 in Gas String Trimmer FUEL LEAK Error Fix: Fuel System Leak

Fuel leaks from the trimmer fuel system — inspect the fuel cap seal, fuel lines, primer bulb, and carburetor gaskets; ethanol in modern fuel degrades rubber and plastic fuel system components; replace cracked fuel lines and a hardened primer bulb; a leaking fuel system is both a fire hazard and causes the engine to run poorly from air ingestion

Medium severity2 fixes available

Quick Answer

Error FUEL LEAK on the Husqvarna 525LST 25.4 cc 17 in Gas String Trimmer means: Fuel System Leak. The top-ranked community fix is “Replace Carburetor Gaskets and Inspect Carburetor for Leaks” (medium difficulty, ~45 min, DIY cost: $15-$20). 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-$150.

Other Husqvarna Models with Error FUEL LEAK

350BT 50.2 cc Gas Backpack Leaf Blower

leaf_blower · 2 fixes

455 Rancher 55.5 cc 3.5 HP Gas Chainsaw with X-Torq Engine and Air Injection

chainsaw · 2 fixes

460 Rancher 24 in 60cc Gas Chainsaw

chainsaw · 2 fixes

HU800AWD 22 in. 190cc Honda GCV190 All-Wheel Drive Self-Propelled Gas Mower

push_mower · 2 fixes

LC221FHE 21 in 163 cc 4-Stroke Walk-Behind Mower with Electric Start and Mulching Capability

push_mower · 2 fixes

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

2 fixes

HEAD SPINS AT IDLE

Trimmer Head Spins at Idle

Excessive Vibration

Trimmer Line Will Not Advance

2 fixes

People Also Ask About Husqvarna 525LST 25.4 cc 17 in Gas String Trimmer Error FUEL LEAK

What does error code FUEL LEAK mean on a Husqvarna 525LST 25.4 cc 17 in Gas String Trimmer?

Error code FUEL LEAK on the Husqvarna 525LST 25.4 cc 17 in Gas String Trimmer means: Fuel System Leak. Fuel leaks from the trimmer fuel system — inspect the fuel cap seal, fuel lines, primer bulb, and carburetor gaskets; ethanol in modern fuel degrades rubber and plastic fuel system components; replace cracked fuel lines and a hardened primer bulb; a leaking fuel system is both a fire hazard and causes the engine to run poorly from air ingestion

How do I fix error code FUEL LEAK on my Husqvarna 525LST 25.4 cc 17 in Gas String Trimmer?

The most successful fix is "Replace Carburetor Gaskets and Inspect Carburetor for Leaks" (medium difficulty, ~45 minutes). Estimated DIY cost: $15-$20. HomeMD has 2 community-ranked fixes for this error.

Is error code FUEL LEAK 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 FUEL LEAK myself?

Yes — the top-ranked community fix ("Replace Carburetor Gaskets and Inspect Carburetor for Leaks") is rated medium difficulty and takes about 45 minutes. Tools needed: T20 Torx screwdriver, Flathead screwdriver, Pliers.

How much does it cost to repair Husqvarna 525LST 25.4 cc 17 in Gas String Trimmer error FUEL LEAK?

DIY cost: $15-$20. Professional repair typically costs $120-$150. 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.

Which other Husqvarna models have the FUEL LEAK error?

Error code FUEL LEAK also appears on 5 other Husqvarna models: 350BT 50.2 cc Gas Backpack Leaf Blower, 455 Rancher 55.5 cc 3.5 HP Gas Chainsaw with X-Torq Engine and Air Injection, 460 Rancher 24 in 60cc Gas Chainsaw, HU800AWD 22 in. 190cc Honda GCV190 All-Wheel Drive Self-Propelled Gas Mower, LC221FHE 21 in 163 cc 4-Stroke Walk-Behind Mower with Electric Start and Mulching Capability. The fix may vary by model, so check each model's specific page for tailored repair steps.

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)
HEAD SPINS AT IDLE — Trimmer Head Spins at Idle (2 fixes)
HIGH VIBRATION — Excessive Vibration (2 fixes)
LINE FEED FAIL — Trimmer Line Will Not Advance (2 fixes)

Which other Husqvarna models have the FUEL LEAK error?

Error code FUEL LEAK also appears on 5 other Husqvarna models:

350BT 50.2 cc Gas Backpack Leaf Blower (leaf blower) · 2 fixes
455 Rancher 55.5 cc 3.5 HP Gas Chainsaw with X-Torq Engine and Air Injection (chainsaw) · 2 fixes
460 Rancher 24 in 60cc Gas Chainsaw (chainsaw) · 2 fixes
HU800AWD 22 in. 190cc Honda GCV190 All-Wheel Drive Self-Propelled Gas Mower (push mower) · 2 fixes
LC221FHE 21 in 163 cc 4-Stroke Walk-Behind Mower with Electric Start and Mulching Capability (push mower) · 2 fixes

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