Kärcher External Hose or Coupling Leak

Handle or hose connection leaks water during use.

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Possible Causes

Worn O-rings in quick-connect coupling, Cracked hose cuff, Loose hose clamp, Damaged spray gun body (if fitted)

How to Fix / Troubleshooting

Safety first: Turn off and unplug the unit. Depressurize by pulling the trigger until no more water flows.

  • Inspect couplings: Check all quick-connect couplings and hose ends for drips. Replace worn O-rings and lubricate lightly with silicone grease.
  • Check hose cuffs: Examine the hose cuffs for cracks. Replace the cuff or hose assembly if damaged.
  • Tighten clamps: Ensure any hose clamps at the handle or wand are secure.
  • Replace damaged gun: If your model uses a separate spray gun and it is cracked, replace the gun assembly.
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Repair Difficulty

Easy 2/5

Required Part

Hose O-Ring Set
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