Maintaining your lawnmower is critical to the life of a push mower, and an essential engine maintenance task is an oil change on a regular basis.
For the best lawnmower engine performance, change the oil after 5 hours of use for a new mower, at least once every summer or spring mowing season or every 50 hours of operation, whichever comes first, for optimal lubrication.
How To Check Oil Level
Check the oil level and appearance before every time you intend to start a small engine and make it a habit. The most accurate reading can be obtained by checking the oil while the engine is cold, with the majority of the oil in the crankcase.
Step 1: Locate the oil filler cap at the bottom of the engine block to begin.
On newer versions, look for oil can symbol or the word “oil” or “fill” inscribed on the plug.
- On tiny tractors, the cap may be hidden behind the hood.
- Engines with a longer oil fill tube or a regular fill hole with a dipstick for inspection are available.
- To ensure that the oil is at the fill line or the top of the fill hole, others may ask you to remove the filling cap.
Step 2: Clean the Crankcase: Before removing the cap, use a clean cloth to wipe the area clean to prevent dirt and debris from falling into the crankcase.
Step 3: Inspect the Oil: If no dipstick is present, a clean tip of the cloth should be used to check the oil. If there is a dipstick cap on the engine, remove it and clean the dipstick with a clean cloth.
- To get an accurate reading, carefully replace the dipstick. If you’re checking the level using a screw-on cap, make sure you fully screw it in before removing it to check for accuracy.
- Remove the dipstick and check the oil level.
Oil in the engine should be between the lines shown on the dipstick. It should never be above or below the FULL line, and it should never be above or below the ADD line.
Steps To Replace Your Lawn Mower Engine Oil
Step 1: Getting Started
Before you begin, double-check that you have all of the materials required. You’ll need:
- SAE 30 motor oil
- Old newspapers or cardboard
- Oil drain pan
- Owner’s manual for your lawnmower
- Shop towels or rags
Tractor Supply Co. has everything you’ll need to oil your push mower or lawn tractor, including replacement filters and oil strainers for attached equipment. To make things easier, the company sells several oil extractor kits to help you avoid work or oil spills with hard-to-reach drain holes. There’s also a storage container for these items, which is oil-safe. Bring your obsolete oil to one of our stores for oil recycling drop-off.
It is ideal for larger riding mowers or lawn tractors and can be used to lift and secure your equipment so that you may easily change the oil, replace belts, sharpen mower blades or remove debris.
- Allow 60 seconds for your lawn mower’s engine to warm up before you start it.
- Shut off the engine.
- Disconnect the spark plug wire from the lawnmower engine so it does not start on you inadvertently while you’re working.
- Clean old oil and debris from the dipstick shaft and drain plug regions using a shop towel or rag.
- Remove the dipstick.
Step 2: Drain The Oil
- If your mower has a push-mow system, start by putting the mower deck up so that the spark plug is facing upwards.
- Put the oil-safe container under the mower.
- Unscrew the oil plug counterclockwise using a socket wrench until oil can flow out. Remove any old cutting grass or other debris from the mower blades before refilling with oil.
- Use only a container that is designed to store motor oil. Oil in containers not meant for this purpose may seep and result in oil dripping on your garage or farm.
- It’s important not to throw old oil on the ground or down the drain. Take your used oil back to one of our Tractor Supply Co. locations or a designated oil recycling facility for proper disposal.
Step 3: Replace Oil Filter
Filters for mowers utilize oil to keep the oil clean of big particles of dirt and other debris. If your lawnmower has an oil filter, change it at least once a year, or as often as recommended by the maker.
To get assistance locating your oil filter and finding the appropriate replacement part for your lawn mower’s make and model, contact a local Tractor Supply Co. store.
- Locate the oil filter on a push mower or lawn tractor.
- Remove the oil filter by turning it counterclockwise and pulling it out. If the filter for oil is loose enough, you can remove it with your hands; if not, use a pipes wrench or a filter wrench to help.
- Examine the oil filter’s seal. If the seal is dirty or contains anything else (such as grass), clean it off.
- Using good engine oil, rub the sealing gasket with the oil to make sure it appears well-lubricated and clean.
- Place the new oil filter in the filter adapter and tighten it using your hand.
- Attach the oil filter to the engine using a pipe wrench or filter wrench.
Step 4: Refill Engine Oil
Now it’s time to put some new oil in your lawnmower. Clean oil should be translucent with a slight golden brown tinge. Dirty oil will be opaque and dark brown or black in color, while clean oil will be light golden transparent in color. You may use an oil funnel to minimize spills if you like.
- Find the oil filler plug of your push mower or lawn tractor. This is where you’ll add the oil.
- Pour the required amount of oil into the hole where the oil fill plug goes. If you have two oil fill plugs, one can be used to refill while the other is being replaced.
- It’s critical to avoid overfilling. Only put in as much oil as is advised by the manufacturer.
- Replace the oil fill once all of your new oil has been put into the engine of the lawnmower. Before reinstalling it into the dipstick shaft, clean off the dipstick.
- Finally, check the oil level in the mower by removing the dipstick. The correct oil level indicator can be seen on the dipstick.
- Wipe away any surplus oil that may have dripped or spilled from the engine onto other portions of the lawnmower using a clean, dry cloth.