So your tractor lost spark. You purchased a new ignition coil. After you installed it you still don’t have spark. What happened? We will go into this common problem later in the article, but for now remember never make assumptions. Always look for evidence that suggests a cause. Evidence comes in many forms such as smoke coming from your engine, metal particles in your oil, and oil leaks from your transmission.
The atmospheric vent is divided by the two halves of the carburetor. As a result fuel can leak in between the gasket and flow into the atmospheric vent and down into the carburetor. This also causes loss of fuel and a rich air/fuel mixture. The fuel level needs to be slightly below the bottom half of the carburetor to prevent this. Warping of the carburetor halves can also create an easier path for fuel to leak into the atmospheric vent.
D-42 - Engine Wiring Diagram Specialist
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