![]() Starter fluid is highly flammable, and any contact with an ignition source can lead to a fire hazard. Keep ignition sources away: Make sure there are no ignition sources nearby, such as open flames, cigarettes, or sparks.The fumes produced can be harmful if inhaled in an enclosed space. Work in a well-ventilated area: Ensure that you are in an open space or a well-ventilated area when using starter fluid.Adhere to the safety guidelines and follow the recommended usage. Read the instructions: Familiarize yourself with the instructions provided by the starter fluid manufacturer.Here are a few essential safety measures to follow: Precautions and Safety Measuresīefore using starter fluid on your lawn mower, it’s crucial to take some precautions to ensure your safety and prevent any potential accidents. Starter fluid is particularly useful when starting a mower after a long period of inactivity or when the fuel system is clogged. It provides a temporary source of combustible material, enabling the engine to fire up more easily. Using starter fluid on a lawn mower is beneficial in situations where the engine has trouble starting. It contains volatile hydrocarbons, typically ether or diethyl ether, which help ignite the engine and overcome any initial fuel delivery problems. ![]() Starter fluid, also known as starting spray or engine starting fluid, is a flammable aerosol solution specifically designed to assist in starting engines, including those in lawn mowers. Applying Starter Fluid to the Carburetor.Spraying Starter Fluid on the Air Filter.On the other hand I have seen a few Briggs engines sheer the fly wheel key from back firing although this has been very rare cases over the last 20 years. He has not had any problems other than the loud back fire. Well, it has been about 3 years now, and I am reminded every time he finishes mowing his lawn by that LOUD back fire that he has not yet purchased a new one. A few years ago I bypassed my neighbor’s fuel solenoid, and told him I would replace it when he purchased a new one. But over the years I have not seen many bad problems arise from bypassing the fuel shut off solenoid. It is typically never safe to deviate from the original design of the engine many things can go wrong when doing so. Is it Safe to Bypass the Fuel Shut off Solenoid? This is just a temporary fix as your tractor will back fire when you turn it off, because the solenoid is bypassed, and the fuel will continue to flow into the cylinders. The short answer is YES! In order to bypass the fuel shut off solenoid simply cut the plunger off the solenoid with side cutters, and screw the solenoid back into the bottom of the carburetor. You should see the plunger on the end of the solenoid retract, if it does not retract then the solenoid is most likely bad. Unscrew the solenoid from the bottom of the carburetor, and turn the key to the on position. In order to check if your fuel solenoid is bad, turn off the fuel supply shut off if you have one if not then crimp the fuel line with vice grip pliers. How do I Know if my Fuel Solenoid is Bad? ![]() The purpose of the fuel solenoid is to stop the flow of fuel to the engine when the key switch is turned off to prevent the engine from back firing. When energized with 12 volts of power from the key switch on your riding mower the fuel shut off solenoid will open allowing the fuel to flow into the engines cylinders. It is an electrical component that tends to fail over time preventing fuel from flowing into the cylinders. The fuel shut off solenoid is located on the bottom of the carburetor. This is usually a symptom of a bad fuel solenoid on a riding mower. After years of trouble shooting this problem I found one common problem with these newer small engines. I tend to get a lot of customers bring lawn tractors to me with the complaint that the tractor will only run, or start on starting fluid.
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