{"id":6934,"date":"2021-04-20T12:28:42","date_gmt":"2021-04-20T12:28:42","guid":{"rendered":"https:\/\/notsealed.com\/?p=6934"},"modified":"2023-07-27T06:59:07","modified_gmt":"2023-07-27T06:59:07","slug":"how-to-fix-a-lawn-mower-that-runs-for-a-while-then-dies","status":"publish","type":"post","link":"https:\/\/notsealed.com\/how-to-fix-a-lawn-mower-that-runs-for-a-while-then-dies.html","title":{"rendered":"How to fix a lawn mower that runs for a while then dies"},"content":{"rendered":"\n

I want to show you what to do if your lawn mower runs for a while and then dies. It is one of the most common problems affecting older lawn mowers but it’s an easy fix.<\/p>\n\n\n\n

What is happening is that the lawn mower is starving for fuel, spark, or air. You will need all three for a long-running engine. In this post, we will show you how to check for all three issues easily and fast.<\/p>\n\n\n\n

Lawn mower stops running when hot<\/h2>\n\n\n\n

A lawn mower will get up to running temp within a few minutes. This is about the length of time it takes for fuel to run out of the carburetor. This is a great indication that you have a fuel restriction in the carburetor.<\/p>\n\n\n\n

What happens is the fuel is not getting from the bottom of the carburetor bowl into the engine. Often this is because of a swollen needle seat, sticky float, or a blockage. You will need to remove the carburetor to fix this problem.<\/p>\n\n\n\n

Fuel restrictions can be either foreign material like grass, dirt, or air filter material or a swollen pilot needle seat in the carburetor.<\/p>\n\n\n\n

A quick test is to start your lawn mower and remove the fuel tank cap. This will test if there is a problem with the one-way valve in the filling cap. If your filling cap is blocked a vacuum will prevent fuel from going into the carburetor.<\/p>\n\n\n\n

If your lawn mower still runs for a while and then dies with the fuel cap off then check for blockages in the fuel lines. Sometimes the fuel lines can swell up and restrict fuel flow. <\/p>\n\n\n

\n
\"lawn<\/figure><\/div>\n\n\n

Inline fuel filters will be at the discharge to the fuel tank. Remove the bottom hose to check and inspect this fuel filter. If these are all good you will need to clean the lawn mower carburetor.<\/p>\n\n\n\n

\n