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I have a BP75AR rally mower. Its very old.It has a Briggs 4 cycle engine. Good luck. Mike
If it is a 2-stroke engine, the oil/gas mixture has too much oil. If it is a 4-stroke engine, the oil sump is overfull.
Either it is a 2 stroke(in which it's normal), or if it's a 4 stroke it has worn rings and is burning oil
Look at the engine on your lawn mower. If the engine has an oil filler tube or a "hole" with a cap on it where oil is added to the engine, it is a 4-cycle (4-stroke) engine. If there is no oil filler tube or place to add oil to the engine, then it is a 2-cycle (2-stroke) engine and the oil has to be added to the fuel.
If it is a 2-stroke engine, 2-cycle engine oil is added to the gasoline. If the engine is 4-stroke, regular 30W motor oil is used. To tell if your engine is 2-stroke or 4-stroke, look for a spout where oil is poured into the engine. If there is no spout, then the engine is 2-stroke and 2-cycle oil must be added to the gasoline.
Four-stroke engines have a spout where you add oil to the engine. On two-stroke engines, oil has to be added to the fuel. (Four-stroke and two-stroke are also called four-cycle and two-cycle, respectively).
Only if it is a two-stroke (two-cycle) engine.
You did not specify which brand of 2-stroke lawn mower you have. So, the ratios may differ. For a Briggs & Stratten 2-stroke engine the ratio will be either 50:1 or 32:1 depending on the engine model. It is always advisable to check with the manufacturer's manual or on the internet.
it all depends if it is a 2 stroke or a 4 stroke lawn mower
Use regular unleaded gasoline, and mix it with four ounces of oil per gallon of gas - BUT, how you use it depends on whether your lawn mower has a 2-stroke or 4-stroke engine. A 2-stroke engine requires 2-cycle oil to be added to the gasoline in a certain ratio. 4-stroke engines do not require the gas/oil mixture.
He is the inventor of the two stroke lawn mower. He is the inventor of the two stroke lawn mower.
Briggs and Stratton made almost exclusively four stroke engines. There is no fuel oil mixture for a four stroke engine. Are you sure you have a two stroke engine by Briggs and Stratto? rhg
if it is a 2-stroke engine then it only can be 1 of 3 things, the spark, the fuel or the compression.