Assuming this is a vertical shaft unit look at the base of the engine. You'll see a small plug with either a thumb handle or 2 pips to unscrew the plug. After you remove the plug add good quality oil to the top of the cast slot in the bore of the plug opening. To drain look under the unit for a square pipe plug. Drain oil warm and replace plug after all dripping stops, refill with fresh oil.
Briggs and Stratton is a select brand of lawn mower. When oiling one's Briggs and Stratton lawn mower engine, it is best to use a high quality oil. One can find such an oil at their local home improvement store, such as Home Depot.
yes B&S labels oil
Never seen one
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
the most common is because it was tipped or tilted
SAE 30 weight full synthetic oil.
There is no "gas oil ratio", the 3.5 hp Briggs and Stratton engine is a four-stroke design, oil should NOT be put into the fuel!!!
sae30
it takes 20w50 motor oil
Worn piston rings. Incorrect weight engine oil. Gasoline mixed with engine oil. Crankcase overfilled with engine oil.
regular 30 w
F your site it sucks!