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Frequently Asked Questions

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Oil Drain Plug Location/Oil Drain Procedure

Where is the oil drain plug located on my engine?

Oil Drain Plug

Typically, on vertical shaft engines, the oil drain plug is located beneath the engine block near the crankshaft. To remove the square plug, all that is required is a standard size 3/8" ratchet and extension (no socket).

On horizontal shaft engines it would be located below the centerline of the crankshaft, on the base of the engine block. Typically an adjustable wrench would remove the square plug.

PLEASE NOTE: Vertical shaft engines, Series 300 to 550, may not feature a bottom oil drain as shown above. If this is the case, oil must be poured out of the oil fill tube as outlined in your engine Operator's Manual.

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For your convenience, Do-It-Yourself parts and products, such as Briggs & Stratton Lawnmower Oil, can be purchased through the Maintenance Parts section of our website.

Oil changing procedures are available by viewing our Change Your Oil page. The "Oil" section of your Operator's Manual also contains this information.

Additionally, please view our "Push Mower Tune Up" video for maintence information, including oil changing procedures:

Your best source of information regarding any engine concern would be a Briggs & Stratton Authorized Dealer. Your Briggs & Stratton Authorized Dealer has all the information relating to Briggs & Stratton warranty information, replacement engines, short blocks, parts, pricing, service/repair, specifications, etc.

For your convenience, we offer three easy ways to locate your nearest Briggs & Stratton Authorized Dealers:

  • Use our website's Service Center Locator.

  • Visit www.yellowpages.com and enter "Lawn Mowers" or "Engines-Gasoline" in the Category search field and your Postal Code in the Location search field.

  • Call the Briggs & Stratton Automated Hotline at (800) 444-7774. This hotline is available 24 hours a day / 7 days a week and features voice recognition technology to assist you in finding the Briggs & Stratton Authorized Dealers in your area. Automated maintenance tips, product information, and FAQs are also offered through voice activated menus.



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