Turn off the Meyer snow plow and allow the engine to cool a few minutes.
Find the carburetor on the left side of the snow plow's Briggs & Stratton engine. It is about halfway up this side and features an immediately recognizable bowl shape on its bottom. The air filter sits on the end of the carburetor and just above the bowl. It may be leaking oil from its end, which is the common sign of a snow plow oil leak.
Use a Phillips screwdriver to remove the screws holding the air filter to the rest of the carburetor. Pull the air filter off with your hands and use soapy warm water and a cloth to clean the filter's end of any oil and buildup.
Reattach the air filter to the Meyer's carburetor using the removed screws and the Phillips screwdriver.
Check the snow plow's oil reservoir by unscrewing the oil cap and testing the oil levels within the reservoir using the dipstick. The oil line on the dipstick should not come up to or beyond the "High" hash mark on the dipstick. If it does, place a pan under the drain plug at the bottom of the reservoir and unplug the drain, allowing some of the excess oil to leak out.
Replace the drain plug and use the dipstick to measure the oil level within the Meyer's reservoir again. The oil line should be somewhere between the "Low" and "High" hash marks on the dipstick. If you drained too much oil out, replace it by pouring the necessary amount of fresh SAE 30 grade motor oil into the reservoir.
Replace the dipstick and the oil cap on the Meyer's oil reservoir. Ensure the oil cap is tight.