How to Remove the Flywheel on a 18 HP Briggs & Stratton Engine

Written by mark o'brien
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How to Remove the Flywheel on a 18 HP Briggs & Stratton Engine
Engine (engine image by goce risteski from

When you are rebuilding your 18-horsepower Briggs & Stratton engine, you will need a few special tools and the proper knowledge to accurately disassemble the engine. One specific item that is complicated for beginners to remove is the flywheel, which is on top of the engine and bolted and wedged onto the top part of the engine's crankshaft.

Skill level:

Things you need

  • Wrench set
  • Flywheel holder
  • Socket wrench and set
  • Briggs & Stratton flywheel puller

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  1. 1

    Unscrew the flywheel housing on top of the Briggs & Stratton engine with the proper-sized wrenches. Bolts located around the perimeter of the flywheel housing hold the cover over the flywheel.

  2. 2

    Unscrew the two small bolts holding the mesh screen to the top of the flywheel with a wrench.

  3. 3

    Position the flywheel holder over the outer fins on the flywheel. Hold the flywheel holder tightly while a second person unscrews the centre flywheel nut with the proper-sized socket.

  4. 4

    Screw the Briggs & Stratton flywheel puller tool into the two holes on the top of the flywheel, which are the same screw holes where the mesh screen was bolted near the centre of the flywheel.

  5. 5

    Screw down the Briggs & Stratton flywheel puller tool by turning the bolts on each side of the tool one turn at a time with the proper-sized wrench. Eventually the pressure from screwing down the flywheel puller will pop the flywheel free.

  6. 6

    Lift the flywheel off the top of the Briggs & Stratton engine. Grab the flywheel key located on the crankshaft under the flywheel and store it in a safe spot.

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