If the spring is worn out or damaged, the throttle body will remain open. Gas pedal feels spongy. You're less likely to replace the spring until the vehicle completely breaks down or is sold off. Some vehicles make use of a throttle cable that runs from the back of the accelerator pedal to the throttle body or carburetor. 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. Linkage briggs and stratton throttle spring diagram labeled. 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. Step 2: Remove the wing nut using your hand and then remove the air cleaner and air cleaner assembly from the carburetor.
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. You should confirm that it is actually damaged before going ahead to replace it. When the vehicle stops, you should turn off the engine and have it towed. Signs of a Faulty Throttle Return Spring. This can be found online from your manufacturer's website or from other online sources. The Briggs & Stratton throttle return spring is an important component that controls the speed of the vehicle or machine. Linkage briggs and stratton throttle spring diagram for generator. Shift the neutral gear and apply pressure to the brake pedal which will bring the vehicle to a stop. Gas pedal issues are not only caused by throttle return spring damages so you might want to inspect other parts of the vehicle before replacing the throttle return spring. We also included a guide on how to correct throttle return spring problems.
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. Step 3: Disconnect the damaged throttle return spring by unhooking it at both ends. 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 to Replace a Throttle Return Spring. This is a very serious problem so you should have it looked into immediately. Engine RPM remains high after lifting off the accelerator. The throttle return spring like many other smaller components of a vehicle is meant to last the lifetime of the vehicle. While you're driving, this could cause you to panic, however, it can be corrected by driving the pedal manually using your foot. Linkage briggs and stratton throttle spring diagram physics. 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. Step 5: Reinstall the air cleaner assembly and secure it with the wing nut. If you're not familiar with such repairs, you might want to get your local mechanic to check out the carburetor. How a Throttle Return Spring Works. It's not safe to drive the vehicle until you have it inspected by a professional.
The function of the throttle return spring is to return the throttle to a closed position. This component is found in vehicles that do not use electronic throttle control (ETC) and it performs the same function in a mechanical form. Taking your foot off the pedal will cause the butterfly valve inside the carburetor or throttle body to spring closed to its resting position. However, this is something you should check out immediately before it gets any worse. You can also perform something similar if you have an automatic transmission. How Long Does a Throttle Return Spring Last? If the throttle spring is broken or worn out, the throttle may stick wide open.
Step 1: The throttle return spring can be found on the side of the carburetor. This allows you to stop safely. Depending on the vehicle, the throttle return spring is attached to the carburetor, throttle body, or throttle cable. 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. Hook it through one of the two eyelets and stretch and pull it through the second eyelet. This helps to control the speed of the machine. You could switch to the manual transmission, press the clutch pedal in and shift the vehicle into neutral. However, the throttle return spring can start to wear, break, and become damaged with use. Step 4: Connect the new throttle spring using the needle nose pliers. Locate the throttle spring and check if it is damaged. Gas pedal doesn't return to its normal position. In this post, you will find a detailed Briggs & Stratton throttle return spring diagram. 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. Replacement throttle return spring.
If there is a malfunction of the throttle return spring, it can result in unintended acceleration. 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. You will need to use the needle nose pliers for this. Also, gravity can take over and help close the throttle.