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Carburetor Repair & Maintenance How-To Guide


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Posted February 3, 2014 In


Your Briggs and Stratton carburetor is an integral part of your small engine, so it’s important to keep it running smoothly for the overall health of your lawn mower, snow blower, and other outdoor power equipment. In this article, we’ll give you tips on carburetor maintenance and repair to keep your small engine healthy – so that you can use your power equipment worry-free!

Before starting any carburetor maintenance or repair work, make sure to consult the Briggs & Stratton operator's manual for the machine you will be working on and follow all safety precautions.

Carburetor Maintenance: Cleaning & Adjusting Small Engine Carburetors

Performing regular carburetor maintenance is a great way to save yourself money, headaches, and hassle down the road.

Most carburetor problems are caused by a variety of blockages from thinks like dirt, varnish, and gasoline deposits. It's easy for the main fuel jet to become blocked, but luckily it's a pretty easy fix. Regular carburetor maintenance will help you avoid problems in the future.

You can clean the main fuel jet (located in your carburetor's fuel bowl nut) with carburetor cleaner and compressed air to blow out loosened debris. Carburetor cleaner dissolves deposits in your carburetor and choke, and consequently can reduce your need for maintenance, repair, and downtime, while improve starting for all 2-cycle and 4-cycle engines.

Carburetor Maintenance and Repair

After cleaning the carburetor, another key step for some float-type carburetors is adjusting the idle speed and mixture. Full instructions for Adjusting a Briggs and Stratton Carburetor are available in our FAQ section.

Performing regular small engine maintenance and tune-ups are another way to maintain your carburetor and prevent engine problems. Briggs & Stratton engine tune--up kits contain new air filters, spark plugs, oil, and easy step-by-step instructions. You can find engine tune-up kits in the Briggs & Stratton official parts store online.

Troubleshooting Carburetor Problems in Your Lawn Mower or Small Engine

Sometimes, if your carburetor is gummed up beyond simple maintenance, it may be necessary to rebuild or overhaul it. You can find detailed carburetor repair instructions in our "Overhauling the Carburetor" FAQ article.  Carburetor problems are often at the root of many issues with outdoor power equipment. By performing carburetor repair with official Briggs and Stratton parts and cleaner, you can help ensure that your small engine is healthy and running right.

If you have any questions about performing carburetor repair on your small engine, official Briggs and Stratton dealers are here to help. Your local Briggs and Stratton dealer can assist with any small engine repair and maintenance issues you may have. Performing regular carburetor maintenance will save you trouble down the road, so make sure you don't neglect it - and then you can get back to enjoying using your Briggs & Stratton outdoor power equipment!

there is a gas puddle in cylinder

Asked by: jkrob

I have carburetor number 693480 on my mower. It is shooting gas out a hole in the front cover of my four screw fuel pump. Do you know what the issues is? Or do you have a flow diagram on how to troubleshoot this issue. Thanks!

Asked by: Yohalf

I have a craftsman 7.25 Platinum Lawnmower that will not start. I have cleaned and rebuilt the carburetor and it still will not start. What other problem can it be?

Asked by: jbchilling

My mower was just working, then just died. I checked the gas, and oil, both fine, however I noticed where the little button you push three times, that little sponge is got oil in it. I don't know if anything else might be wrong. What can I do

Asked by: tightywhitey128

Engine starts no problem when cold but when it warms up after a couple of minutes it cuts out. Before it cuts out it starts to rev slightly up and down and on the odd occasion has backfired. The engine wont start again until it cools down. Carb prob?

Asked by: ptkbrass

experiencing following problem with engine 12H802 ser # 1E119B30482. Startes and runs fine about 20-30 min. then starves for fuel and stops. I then prime a couple of times and it starts right up and runs fine for another 5 min. before repeating above.

Asked by: unhappy102

Performed carb kit replace/repair since engine started fine, then would die after about 30-45 secs.  Believe I followed all instructions and spark plug is reconnected. Now will not start at all.  Help please

Asked by: Rabennett53

is there a float adjustment on carb# 591299. i just replaced my carb on a 6.5 ohv engine because even after putting in a new kit would only run on full choke and then not at full throttle. now i have gas running out of carb when i turn gas on but it runs.

Asked by: camjammer
The float is stick open in the carburetor. Make sure the needle and seat were installed properly.
Answered by: Nicole_BriggsStratton
Date published: 2014-07-13







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