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Engine won't run unless the choke is on - Deere 14SB Push Mower

I recently picked up a 14SB walk behind lawn mower which hadn't been ran in probably around 5 years according to the previous owner. It has a Kawasaki engine in it. I replaced the spark plug, cleaned off the air filter, and put some gas in it to see where I was starting from. After about 4 or 5 pulls with the throttle pushed all the way forward, the engine started up. I let it idle for a little second and pulled the throttle back just a little, which caused it to die. I started it up again and it did the same thing. I've pulled the carb off, taken it apart, sprayed carb cleaner through everything, and it still has the same problem. When the throttle is pushed all the way forwards, it closes a butterfly valve closes to the intake to choke off air flow and will start and continue to run like this. However, as soon as this valve is opened back up it dies. It seems to me that it's not getting enough fuel, but do you have any suggestions or things to try before I take it in to someone? Thanks in advance for the help!

Regards,
Brandon

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It's starving for fuel. When you push the throttle all the way forward it closes the choke. You took it apart but you probably didn;t get all the junk out of it. Easy fix is to put some SeaFoam into the tank and run it. This cleans all deposits and debris from the jets. I have used this stuff and put it in the tank and start the engine and sit back and let it run. After about 5 minutes the engine will smooth out and run fine.

Posted on Jul 30, 2009

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