![]() ![]() Any leakage in this sealed unit of the larger tool will prevent the primer bulb from priming the carburetor and, in the process, the engine. There are valves, gaskets, diaphragms, and other components regulating the flow of air and fuel. ![]() Like the primer bulb, the entire section of your tool comprising the gas tank, fuel lines, and carburetor form a sealed unit. Complete the installation, and the primer bulb should prime unless you have other issues. Get a new compatible primer bulb, connect the ‘in’ port to the carburetor and the ‘out’ port to the return fuel line going to the tank. How To Fixĭisassemble the tool, as required, to remove the primer bulb. However, you may have a leaky or broken primer bulb. This fuel line returns the gas to the tank. ![]() Such primer bulbs have another port to connect to the fuel line. Many handheld tools and other equipment have the primer bulb connected to the carburetor through a hose or line and port. 1.2 When the Primer Bulb Is Connected to the Carburetor and Return Fuel Line However, if the primer bulb, its seal, and plate are fine, you are looking at one of the other causes and therefore fixes explained here. The remedy is similar if you have a broken gasket, seal, ring, or primer bulb plate on the tool’s carburetor. You may not need to fix anything else unless there is another broken or malfunctioning component, like the valve. Unscrew the plate from the carburetor, remove the old primer bulb, and install the new one. Ensure that you select the right type and size for your tool by referring to the model and part numbers on the manual. Get a new primer bulb to replace the damaged one. Besides, a primer bulb will suffer wear and tear due to frequent use, like all such parts. ![]() Also, many primer bulbs are not durable because of the flexible material quality. Also, you must check the seal, gasket, or ring of the primer bulb.Ī leaking or damaged primer bulb that is fastened directly onto the tool’s carburetor is not a serious problem. Inspect the primer bulb closely under a bright light to find any tiny pores causing air to leak. However, a leak may be a tad tough to detect. You can instantly spot visible cracks or other evident signs of damage. Therefore, you must replace a primer bulb that’s:ġ.1 When the Primer Bulb Is Fastened Directly Onto the Carburetor Since the primary function of the primer bulb is to regulate air pressure and suction, it cannot have any leaks, cracks, clogging, or structural issues that make the part ineffective. The primer bulb is integral to priming, thus starting the tool’s engine. The bulb-like button is used on many handheld tools and other equipment to regulate the air pressure and suction inside the carburetor, fuel lines, and gas tank. What Is a Primer Bulb?Ī primer bulb is a flexible button made of rubber or plastic. Technically, priming is the process of providing the carburetor with sufficient gas so that the fuel and air can mix and be ready to combust when you start the engine. Its ultimate purpose is to prime the carburetor. The Primer Bulb Has LeaksĪ primer bulb should be in pristine condition to work flawlessly. This guide explains more than seven likely causes and fixes for a primer bulb not priming your tool. Thus, inspect the usual suspects sequentially, detect the causal issues, and opt for the appropriate fixes. You may have one or more problems preventing the primer bulb from priming. ![]()
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