Replacement throttle return spring. Briggs and Stratton Throttle Spring Diagram. If the throttle spring is broken or worn out, the throttle may stick wide open. This can be found online from your manufacturer's website or from other online sources. Linkage briggs and stratton throttle spring diagram gravity lowest. If the engine is running it will create a vacuum that will want to draw air into the intake making it difficult for the throttle blades to close on their own. You might be better off allowing a local certified mechanic to inspect the throttle return spring and make any necessary checks and repairs if any is needed. How a Throttle Return Spring Works. You're less likely to replace the spring until the vehicle completely breaks down or is sold off. Depending on the vehicle, the throttle return spring is attached to the carburetor, throttle body, or throttle cable. Locate the throttle spring and check if it is damaged. If you depress the pedal and notice that it feels spongy all of a sudden, you could be dealing with a broken throttle return spring.
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You can also perform something similar if you have an automatic transmission. If there is a malfunction of the throttle return spring, it can result in unintended acceleration. You will need to use the needle nose pliers for this. Step 5: Reinstall the air cleaner assembly and secure it with the wing nut.
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In this post, you will find a detailed Briggs & Stratton throttle return spring diagram. When the pedal is pressed, the throttle cable will pull the butterfly valve on the carburetor or throttle body to allow more air to enter the engine. You might not easily notice that the gas pedal feels spongy when depressed but you can easily notice that the gas pedal doesn't return to the normal position. Throttle spring issues are not common but are very serious problems that should be looked into immediately they are noticed. When the vehicle stops, you should turn off the engine and have it towed. This is very important in older vehicles with a mechanical throttle linkage, the throttle return spring will keep the pedal in place allowing you to control it with ease. However, this is something you should check out immediately before it gets any worse. Step 1: The throttle return spring can be found on the side of the carburetor. Depending on the year of the vehicle, the throttle spring may have multiple stages so that if one part of the spring is worn out or damaged, there will be a backup to keep the throttle closed and prevent a dangerous situation. Shift the neutral gear and apply pressure to the brake pedal which will bring the vehicle to a stop. Linkage briggs and stratton throttle spring diagram parts. This component is found in vehicles that do not use electronic throttle control (ETC) and it performs the same function in a mechanical form. The throttle return spring is vital in the vehicle acceleration thus malfunctions can be very dangerous.
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Step 4: Connect the new throttle spring using the needle nose pliers. Engine RPM remains high after lifting off the accelerator. In some cases, it could be that the spring is wearing out so you won't notice any significant changes in the vehicle's performance. Linkage briggs and stratton throttle spring diagram worksheet. We also included a guide on how to correct throttle return spring problems. It's not safe to drive the vehicle until you have it inspected by a professional.
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The function of the throttle return spring is to return the throttle to a closed position. While the main function of the throttle return spring is to bring the throttle back to the closed position, it will also provide some strength to the throttle pedal. If you release your foot from the accelerator and the gas pedal doesn't return to the normal position, then it is likely that the throttle return spring is damaged and needs to be fixed. Gas pedal doesn't return to its normal position. This helps to control the speed of the machine. Hook it through one of the two eyelets and stretch and pull it through the second eyelet. However, the throttle return spring can start to wear, break, and become damaged with use.
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If the spring is worn out or damaged, the throttle body will remain open. Some vehicles make use of a throttle cable that runs from the back of the accelerator pedal to the throttle body or carburetor. Step 3: Disconnect the damaged throttle return spring by unhooking it at both ends. Signs of a Faulty Throttle Return Spring. Taking your foot off the pedal will cause the butterfly valve inside the carburetor or throttle body to spring closed to its resting position.
You should confirm that it is actually damaged before going ahead to replace it.