Craftsman Tecumseh 5 hp lawn mower spits gas out air intake

Old 05-16-12, 06:22 AM
Thread Starter
Join Date: May 2012
Posts: 1
Received 0 Votes on 0 Posts
Craftsman Tecumseh 5 hp lawn mower spits gas out air intake

I have a Craftsman walk behind with a 5.0 hp Tecumseh engine. It runs, but horribly. Spits gas out air intake. I have had the carb off, soaked in cleaner & rebuilt. The carb has been off & on at least 5 times. I don't think the carb could get any cleaner. Engine model # 143.975012
Old 05-16-12, 07:28 AM
Join Date: Nov 2005
Location: USA
Posts: 492
Received 4 Votes on 4 Posts
Flywheel key sheared or valves sticking.
Old 05-16-12, 09:22 AM
Join Date: Jun 2006
Location: United States
Posts: 2,535
Received 21 Votes on 20 Posts
The carb might be clean but maybe the float is set too high or it sinks or the needle seat is in upside down or missing, clamp off the fuel line, remove the bowl, release the fuel line lift the float to see if it shuts off the fuel with minimal pressure, if so remove the float and shake it to see if it sloshes. Have a good one. Geo
Old 05-16-12, 10:04 AM
cheese's Avatar
Forum Topic Moderator
Join Date: Jul 2001
Location: USA
Posts: 17,898
Received 87 Votes on 81 Posts
I'm thinking flywheel key as well.

Thread Tools
Search this Thread
Ask a Question
Question Title: