Orders will continue to ship. A clean and properly adjusted Briggs and Stratton Carburetor helps your small engine run safely. Subscribe to our email newsletter to receive promotions, helpful DIY articles, and special offers. Where is my model number? Briggs and Stratton Carburetor Bowls. Briggs and Stratton Carburetor Gaskets. Briggs and Stratton Carburetor Kits. Briggs and Stratton Carburetor Nozzles.
How to Clean & Repair Carburetors on Briggs & Stratton Small Engines
Briggs and Stratton Carburetor Parts Misc. Briggs and Stratton Carburetor Screens. Briggs and Stratton Carburetor Spacers. Briggs and Stratton Carburetors.
Briggs and Stratton Choke Lever. Briggs and Stratton Choke Linkage.
Briggs and Stratton Diaphragm Kit. Briggs and Stratton Float Valves. Briggs and Stratton Floats, Pins and Kits. Briggs and Stratton Main Jet.
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Briggs and Stratton Overhaul Kit. Briggs and Stratton Primer Bulbs. Briggs and Stratton Springs. Briggs and Stratton Studs. Briggs and Stratton Throttle Shafts. Briggs and Stratton Welch Plugs. Connect With Us:.A carburetor mixes fuel with air and sends that mixture into an engine to be ignited by a spark plug which drives the piston and produces the power output in an internal combustion engine. Problems with the carburetor can manifest in many ways including the engine not starting, idling low, idling high, sputtering, dying, and producing black smoke exhaust.
Proper carburetor cleaning and maintenance can solve many engine problems or shed light on the root cause of the issue. Check the air-flow to the carburetor. Remove the air filter cover and the air filter cartridge.
Look for dirt, debris and oil that may be clogging the air filter. Inspect the path from the filter into the carburetor for any blockages or dirt build up. Remove any foreign objects. Clean the air filter with a shop vacuum or replace it with a new one. Spray carburetor cleaner on the metal parts inside the carburetor.
Makes sure the choke plate and throttle move freely without sticking. Spray them with cleaner. Remove the fuel line from the fuel tank and look for blockages in the line. Gently blow through the line be careful to not swallow or inhale any of the fuel.
If the fuel moves easily through the line there are no blockages. If you have to blow hard there are blockages. Flush out the fuel line by blowing the blockage out or replace it if you cannot dislodge the block.
Remove the spark plug and inspect the plug for charring or moisture. If the carburetor is running too rich too much fuel in the fuel-air mixture there may be moisture left around the spark plug.
Charring indicates incomplete combustion due to too much air in the mixture. Adjust the air-fuel mixture by turning the idle screw. First reassemble the engine fuel line, spark plug and air filter if that won't impede your access to the idle screw. Turn the idle screw clockwise until the needle just touches the seat, then screw it counterclockwise between one and two turns.
Start the engine and let it run for five minutes to warm up. Adjust the idle screw clockwise and counterclockwise until the engine starts to slow down in each direction then turn the screw back to the place in the middle. If you have a tachometer you can use it to test the speed of the engine. It should be rotate at RPM. Use the carburetor troubleshooting guide see Resources to quickly identify the issue with your Briggs and Stratton carburetor. James T Wood is a teacher, blogger and author.
Since he has published two books and numerous articles, both online and in print. His work experience has spanned the computer world, from sales and support to training and repair. He is also an accomplished public speaker and PowerPoint presenter. Hunker may earn compensation through affiliate links in this story. Proper cleaning and maintenance will keep your Briggs and Stratton carburetor working well. Step 1 Check the air-flow to the carburetor. Step 2 Clean the air filter with a shop vacuum or replace it with a new one.Disconnect the spark plug lead and secure it away from the spark plug.
Then, remove the air cleaner assembly. Turn off the fuel valve at the base of the fuel tank. If your engine does not contain a fuel valve, use a fuel line clamp to prevent fuel from draining out of the tank while the carburetor is disconnected from the engine. Some carburetors contain an electrical device at the base of the fuel bowl to control backfire. Disconnect the device, known as an anti-after fire by removing the wire connector from the solenoid's receptacle. With the carburetor still connected to the governor, unfasten the carburetor mounting bolts.
If a connecting pipe joins the carburetor to the engine block, first remove the pipe mounting bolts. Then, disconnect the carburetor from the pipe by removing the nuts and sliding the carburetor off the studs.how to service ,repair a briggs and stratton carburetor
Sketch the governor spring positions before disconnecting them to simplify reattachment. Then, disconnect the governor springs and remove the carburetor, taking special care not to bend or stretch links, springs or control levers. Your carburetor contains a small amount of fuel. Prepare a clean bowl to catch dripping fuel and store small parts. During disassembly, inspect the bowl for dirt and debris to determine the condition of your carburetor. Remove the fuel bowl from the carburetor body.
The fuel bowl may be attached with either a bolt or the high-speed mixture screw. Push the hinge pin out of the carburetor body with a small pin or pin punch. Take care to tap only the pin to avoid damaging the carburetor body. If your carburetor contains an idle mixture screw, remove it along with the spring. Rotate the throttle plate to the closed position, remove the throttle plate screws and the throttle plate.
Then, remove the choke plate and choke shaft and felt or foam washer in the same manner. Use your carburetor repair kit to identify replaceable welch plugs. These seals cover openings in the carburetor left over from machining. Unscrew the main jet from the side of the carburetor pedestal if equipped.
Then, unscrew the emulsion tube; it may be screwed in tight. A carburetor screwdriver is the best tool for the job. It's designed to fit the slot in the head or the emulsion tube so that you won't damage the threads inside the pedestal of the tube itself as you loosen it. Soak metal and plastic carburetor parts in all-purpose parts cleaner for no more than 15 minutes to remove grit. Or, while wearing safety glasses, spray the parts with carburetor cleaner.
Then, wipe away solvent and other residue thoroughly using a clean cloth. Never use wire or tools because they can damage or further obstruct plugged openings.Follow along to troubleshoot and learn when it's best to service your engine. Stale, untreated gas begins to break down after about a month.
Drain the gas from your lawn mower or outdoor power equipment, and then replace with fresh gas and fuel stabilizer to extend the life of your fuel. Stale fuel, dirt, and debris are the most common cause of outdoor power equipment not starting or running properly. If you store equipment with untreated gas in the tank, it can lead to engine damage. Check your oil level and appearance every time you use your engine while it is cold.
Your oil typically needs to be changed each season or after every 25 hours of use. The carburetor regulates how air and fuel move through the engine. A dirty carburetor can cause poor engine performance or starting problems. For small engines, spark plugs typically need to be replaced every season or after 25 hours of use. You should also check to make sure the spark plug gap is set correctly. An improper spark plug gap could lead to engine knocking and poor performance.
If your spark plugs look good, problems with your ignition system can also be preventing a spark. These problems can range from a faulty spark plug lead, shorted kill switch or damage to the flywheel.
If the engine is emitting white or blue smoke, this means your engine is burning oil. Start by checking your air filter, if it looks okay, move onto replacing the gas. Air-fuel compression is crucial to engines powering lawn mowers and outdoor power equipment. You can perform a compression system with a leak down tester. WARNING: Always read the engine and equipment manual s before starting, operating, or servicing your engine or equipment to avoid personal injury or property damage.
Find all Engine Safety Warnings. Learn about the latest products, step-by-step instructions on how to locate your engine model number and more. All rights reserved. Explore Our Family of Brands.How to clean and repair a Briggs and Stratton plastic lawnmower carb the fastest, quickest and easiest way.
Simple and basic, do it yourself DIY tutorials to help you with your broken lawn and garden equipment. I do my best to teach you how I easily diagnose problems the fastest, quickest and most efficient way. If you Google your issue, problem or symptom, you may just see one of my videos pop up! Disclosure: This YouTube video is provided for informational purposes only. Steve is a qualified small engine mechanic and is working in an open and fully ventilated shop for the purpose of making this video.
Small engines should be operated outside in fully ventilated areas only and it is important that you wear the appropriate safety gear. If you choose to try one of the suggestions made in this video, you do so at your own risk. Please ensure that you take all proper safety measures before attempting any project. I've replaced the spark plug, check with a spark detector, cleaned the carb, cleaned the fuel tank and fuel line and today replaced the carb jet.
The choke is working properly. The mower has 3 seasons on it. It will burn a blast of ether and fuel is getting to the carb. It will not even try to start and run. I'm running out of ideas. You got any? Thank you so much for your instructions and your encouragement. Fired up first time and every time, sweet. Drilling out the main jet makes it easier start but still having issues the engine does not want to rev up. I have pictures but it will not let me post them here.
It was all clogged. Appreciate the vid!!! If you are going to pay someone to clean the carb, think about just buying a new carb on eaby for 15 dollars shipped to your house, watch a video on youtube, and change the carb yourself. It's not that difficult. That or take the new carb to the mower repair guy and have him change it out for way less labor than messing around trying to clean the old one.
At what point does all the consumers getting frustrated and throwing these mowers in the landfill offset the little bit of extra emissions created by allowing them to run rich enough to not have problems? Dave here from Edinburgh In Scotland. Just wanted to say thanks for your excellent diagnosis of the potential carb issue. This was exactly the case for me. Plastic carb and lawnmower would not run.
Started pulsating then eventually died on me. You tutorial encouraged me not only to have a beer but also strip the carb to its Componenets and open up the needle valve diameter. Runs like a dream now!Bought a cheap lawn mower and the Nikki carburetor was dirty causing the engine to surge. Here I show how I fixed it. Watch out for those piece of shit carburetors, the O-ring around the main jet will go bad, and cause fuel To go past and run super rich.
I live in the wrong county! Good video, just one wrong point, the fuel cut solenoid DOES NOT cut fuel from entering the bowl, what it does on engine shutdown is block fuel from entering the main jet at the bottom of the plastic fuel block, fuel to the bowl is controlled by the needle and seat. Thirty year small engine shop owner and Briggs dealer here. They have no pump as such so since they haven't got a gravity fed fuel supply, the fuel is siphoned out by the engines own vacuum, it's a bit like sucking on a drinking straw when drinking.
It's a different kind of carburetor from the one on my I'm having a hard time finding how to adjust the carburetor on this engine.
The engine is on a True Value riding lawnmower. Where to find the same kind of carburetor? Pretty good video, at least you don't make the same mistake like others tutorials to last to 10 or 15 min or longer! You are too cool!!! I have a brand new carb instaled and it is surging.
Also after about 15 minutes of running the choke shuts by itself and shuts the engine down? Any thoughts? I didn't have to clean mine but replaced with brand new one and its doing what yours was doing before the carb clean…!!!???!! My Briggs 15 hp ohv is doing the same thing, I have installed a new fuel filter and a new carb and it is still surging. What should i be looking at next? What if it's a bran new carb? I can't seem to get it adjusted right, I still get surging. Have you done a video or suggestions on setting up the Governor after replacing a carburetor?
I have gotten the generator at idle to be set to 60 hertz, but not sure how much the volts should drop after connecting a tool that only pulls a portion of the volts the generator is capable of. A lot of time you can set the governor and fix a surging problem. People mess with the thinking they are getting more power or they just move over time and it will bounce off it causing a surge. Gas sits in them all winter and gums up.
Thanks,Sean Reply.Get Support. Shop Now. You owe it to yourself to see how far mowing technology has come. See our newest innovations that make things easier and better. View Innovations. Learn More.
Storing for the season. Replacing a part. Your manual will help get the job done.
What Are Some Common Problems With Briggs & Stratton Engines?
Find Manual. Searching for maintenance tips to perform simple service on your outdoor power equipment? View our Maintenance How-To's to get step-by-step instructions on how to change your lawn mower engine oil or spark plugs, replace an air filter or repair your carburetor. Looking for the right piece of outdoor power equipment can be a daunting process. Our buying guides can help you choose the right lawn mower for your yard, generator for your critical backup power needs, pressure washer to tackle your outdoor cleaning projects or snow blower to cut through the toughest snow and ice.
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