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How to Change Oil


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Steps to Better Engine Maintenance

For optimum performance, you should change the oil in your small engine after the first five hours of use and then annually, or every 50 hours of use (whichever comes first).

Changing Oil Guide

Step 1: Getting Started

Start the engine and run it until it is warm. Stop the engine. WARNING: Be sure to disconnect the spark plug wire, and secure it away from the spark plug to prevent accidental starting. Clean around the oil fill and drain plug area to prevent dirt and debris from falling into the crankcase (see photo at right). Remove the dipstick, if equipped.

Step 2: Draining The Oil

Tilt the mower deck with the air filter or spark plug side up, and position some newspaper and an oil pan or jug beneath the mower. Use a 3/8" drive socket wrench and extension (no socket) to turn the plug counter clockwise (see photo at right), allowing the old oil to drain. If the plug also serves as a fill cap (normally yellow or white in color), it may have two prongs so you can loosen it by hand or with a screwdriver or hex key for additional torque.

Replace the drain plug by twisting clockwise and tightening with a box wrench or adjustable wrench. If your engine does not have an oil filter, skip this step.

Step 3: Engines with Oil Filters

If your engine has an oil filter, replace it at least once per season.

  • Replace the oil filter by twisting counterclockwise on the body, using a filter wrench or pipe wrench.
  • Examine the sealing surface on the oil filter adapter for debris or gasket material. Clean if necessary.
  • Lightly oil the filter gasket with clean engine oil. Install a new filter, screwing in by hand until the gasket contacts the filter adapter (see photo at right). Tighten the filter an additional 1/2 to 3/4 turn.

Step 4: Fill With New Oil

Pour in the correct amount and approved type of oil for your engine, based on this oil capacity chart , or your operator manual. If you have two oil fill plugs (normally yellow or white in color) on each side of the engine, either one can be used to fill the engine with oil to the correct level. Please DO NOT fill the engine with oil without using the correct measuring device as illustrated in your operator’s manual.

Oil Recommendations


To optimize engine performance, use Warranty Certified Briggs & Stratton Small Engine Oil. Briggs & Stratton offers a Synthetic 5W-30 oil that provides the best protection at all temperatures as well as improved starting with less oil consumption.

For optimum performance, you should change the oil in your small engine after the first five hours of use and then annually, or every 50 hours of use (whichever comes first).

  • Use Briggs & Stratton SAE 30W Oil above 40°F (4°C) for all of our engines.
  • Check oil level regularly.
  • Air-cooled engines burn about an ounce of oil per cylinder, per hour.
  • Fill to mark on dipstick. DO NOT OVERFILL.

My engine 17.5 horse on m175-42 has 2 lock and unlock switches on top of it..What are they for?

Asked by:

My mower has a B&S Series 750 engine. The instructions only mention two options to drain the oil: removing the oil drain plug or tilting the mower. Can the Oil Removal Kit (5430WEB) be used with this engine? Will I be able to pump enough oil out this way?

Asked by: Fred0860

I have a 550 ex series it won't start is less than a year old try to change spark plugs changed gas still won't start do you have any ideas how to get it started

Asked by: Deedtl310
Buy a spark tester from auto parts store , remove one spark plug connect tester to plug wire & make sure tester is grounded to engine. Have some one turn over engine to see if there is spark, should be a blue color. If u have spark , fuel filer could be plug. If no spark flywheel key could be broke. Elec. ignition could be bad
Answered by: Roert
Date published: 2014-08-13

I just got a Craftsman 18.5 HP ride on with a Briggs 42A707 engine (1238-01). OM the hood of the mower they indicate the engine has an oil filter and offer a part number, but I do not see a filter on the engine. Where could it be hiding?

Asked by: SteveG
The OM is a general manual. The oil filter was an optional item and if you cannot locate it on the engine sump, then you engine does not have one.
Answered by: Nicole_BriggsStratton
Date published: 2014-08-18

I have just purchased a new Craftsman Platinum 7.25 mower which is equipped with a B&S engine model 128M02-0015-F1. I tried to drain the oil as instructed but could not find neither the bottom or side drain plug as shown in the manual. Can you help?

Asked by: SirNorm
There may be a recessed drain plug on the underside of the engine; however, the equipment manufacturer may have covered this when they installed the engine on their mower. If this drain is blocked you can tilt the engine to its side to drain from the oil fill. When tilting the unit, make sure you remove the gas and tilt fuel tank side up.
Answered by: Nicole_BriggsStratton
Date published: 2014-08-24

I have an old Bolens Model 11-A-074E065 18367  SERIAL 1K156KC3237   given to me where do I find the oil stick  and where do I find the oil fill ? this is a 22 ubch side discharge that was given to me and I have n o manual to look at

Asked by: baba
To locate any information on your engine, you will first need the model type and code. Please see the following link for assistance in locating these numbers: http://bit.ly/17rzznN Once you have this information you can find information on your engine here: http://bit.ly/12pIs1I Select engine as your product type and follow the directions for entering the model type and trim into the search fields.
Answered by: Nicole_BriggsStratton
Date published: 2014-07-31

I bought a "Brute" with a 6.75 B & S engine from Menards during a close out sell. they did not have a manual t I am changing the oil after using it three times, But how much oil do I need to put in it The stick has two arrows and 3hash marks?

Asked by: wildBOBcat
To locate any information on your engine, you will first need the model type and code. Please see the following link for assistance in locating these numbers: http://bit.ly/17rzznN Once you have this information you can find information on your engine here: http://bit.ly/12pIs1I Select engine as your product type and follow the directions for entering the model type and trim into the search fields.
Answered by: Nicole_BriggsStratton
Date published: 2014-07-30

I have a new mower with a 122T02 - 0213 H1 motor, and like Turbo1, it has no oil drain hole. Does this mean that you rely on the mower manufacturer to drill and tap the oil drain plug hole?

Asked by: Nikkname
There may be a recessed drain plug on the underside of the engine; however, the equipment manufacturer may have covered this when they installed the engine on their mower. If this drain is blocked you can tilt the engine to its side to drain from the oil fill. When tilting the unit, make sure you remove the gas and tilt fuel tank side up.
Answered by: Nicole_BriggsStratton
Date published: 2014-08-18







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