2 Stroke Fuel In 4 Stroke Lawn Mower

4 stroke cycle spark ignited engines.

2 stroke fuel in 4 stroke lawn mower. A 4 stroke engine has a cycle that consists of 4 strokes in those 4 strokes the piston goes around twice in the engine so the spark plug fires every other rotation. There are two separate valves in this kind of engine one for intake and one for exhaust unlike the 2 stroke engine. There can also be additional information like the oil to fuel ratio and the maximum ethanol content. This will damage the engine components and void the engine warranty.

Lawnmowers and other lawn equipment such as tillers have similar motors. Usually when people put their old premix into a 4 stroke and it smokes is because the gas is old and the more volatile components of the gasoline have evaporated away leaving the oiler smokier components. If it doesn t foul the plug in a 2 stroke it won t foul the plug in a 4 stroke. Last but not least if you are not sure make sure to double check the information provided by the manufacturer in your operator s manual that came with the.

Posted by gjc at 11 30 pm on february 29 2008. Always mix a high quality 2 cycle oil such as briggs stratton lawn mower oil at a 50 1 gas to oil ratio. Lawnmower makers for many years offered a choice between two stroke and four stroke engine types. 2 stroke cycle spark ignited engines.

However most large yard machines use a four cycle engine designed to work for prolonged periods.