Small Engine Mechanic how-to

How to Clean a Carburetor

Gummed carburetors are one of the most common small engine repairs.

Updated By the Career Education Institute Curriculum Team
Quick answer

Gummed carburetors are one of the most common small engine repairs. In short: shut; take; remove, then complete the remaining steps below.

Step by step

  1. Shut off fuel and remove the air filter and carburetor.

  2. Take photos before disassembly to remember linkages.

  3. Remove the bowl, float and jets.

  4. Spray passages with carburetor cleaner and blow out with compressed air.

  5. Replace gaskets and worn parts, then reassemble.

  6. Reinstall, add fresh fuel and adjust idle.

Safety reminders for small engine mechanics

  • Disconnect spark plug wires or batteries before working on blades
  • Drain fuel and work in ventilated areas away from sparks
  • Wear eye protection when grinding and using compressed air
  • Run engines only with exhaust vented outside

Two-stroke engine · Four-stroke engine · Carburetor · Choke · Ignition coil · Flywheel key: see the full small engine mechanic glossary.

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