Troubleshooting an 11 HP Briggs & Stratton

Written by breann kanobi
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Troubleshooting an 11 HP Briggs & Stratton
Fix your lawnmower's engine so that it properly cuts grass. (Jupiterimages/Photos.com/Getty Images)

The Briggs and Stratton 11 horsepower engine typically powers lawnmowers. Common problems for the engine, including failure to start, stalling or sudden stopping, typically require the same procedure of refilling fluids, replacing the spark plug and adjusting the carburettor. If possible, look to the instruction manual of your lawnmower for additional guidelines. Some lawnmowers connect to engines in a specific way and require disconnection before you can work on the engine.

Skill level:
Moderate

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Things you need

  • Clean towel
  • Screwdriver
  • Metal scraper
  • Wrench
  • Gas

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Instructions

  1. 1

    Turn the lawnmower over and examine the blades for any build-up, such as chunks of dirt. Scrape any accumulated grass and dirt off the blade and the underside of the mower deck with a metal scraper or screwdriver. Clean the blade with a wet towel, if necessary.

  2. 2

    Open the cap of the gas tank and refill the gasoline.

  3. 3

    Replace the Briggs and Stratton engine's spark plug. Pull the cap off the spark plug and unscrew the plug with a spark plug wrench. Discard the old spark plug and screw the new spark plug onto the engine with a wrench.

  4. 4

    Adjust the carburettor. Turn the needle valve of the fuel bowl clockwise using a screwdriver. Turn the idle valve clockwise, until it is fully closed. This valve is located on the top of the inlet fuel tube.

  5. 5

    Turn the engine on and allow it to warm up for about one minute. Pull the handle of the throttle back, until it is in the high speed position. Turn the needle valve clockwise until the Briggs and Stratton engine sputters. Turn the needle valve counterclockwise until the sputter stops.

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