Tip & How-To about Briggs & Stratton Briggs Stratton Lawnmower Lawn Mower Short Block
One of the most common problems with small engines, especially now with Ethanol in fuels is the blockage of the fuel system. Whether you have a Briggs and Stratton engine or a Stihl chain saw, knowing how to clean the fuel system is a good idea.
I start off by specifying the type of carburetor you have. Two common types are bowl type and cube type. Bowl type hold fuel in a bowl before it is used and cube type are used on small multi-axis machines like cultivators or chainsaws.
Bowl carburetors are fairly simple to take apart and clean. You have three major jets and a metering system. The jets include Hi speed (the large holes)
Transfer jets (medium holes) and Idle jets (small holes).
The metering system is a needle and a seating point that will need cleaned or replaced.
I recommend replacing parts rather than reusing because Ethanol can cause microscopic pits that will cause fuel leaking and poor running.
You can obtain parts from a local dealer like www.arcolawn.com or the engine manufacturer. It is always recommended to change your fuel filter, oil and oil filter after this repair to prevent engine damage from diluted oil and debris.
Cube Carburetors are a bit trickier but the same principle. See the following link for the manual to get the settings correct.
www.walbro.com (Bowl Style)
http://zamacarb.com/tips.html (Cube Style)
www.arcolawn.com (Parts Ordering)
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