Craftsman 20 hp 42 in. Deck Lawn Tractor - CA Model Logo
Posted on Oct 01, 2009
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Cleaned gas and changed fuel filter. Mower only

Cleaned gas and changed fuel filter. Mower only runs with full choke on. Stalls without full choke.

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Phil Saunders

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  • Posted on Oct 01, 2009
Phil Saunders
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Joined: Sep 22, 2009
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There are a number of things that can cause this, depending on the engine fitted. Assuming a Briggs & Stratton V-twin...

Check that the carb solenoid under the float bowl is connected, has battery voltage when the ignition switch is at 'RUN', and is functional.

As a quick check, with the engne OFF, turn key to 'RUN' there should be an audiable 'click' from the carb if the solenoid is working.

After that, check that the fuel pump is delivering fuel (disconnect output, and crank engine). SHould be a good flow.


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Related Questions:

0helpful
1answer

Hi, I have a 13.5hp Briggs & Stratton motor which starts and will only run on choke slow rpms and mild smoke.
check the point where the fuel hose goes to the fuel tank
there is very fine filter in the hose that could be blocked preventing full fuel flow
only running on choke indicates insufficient fuel flow
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Apr 02, 2017 • Briggs & Stratton Garden
1helpful
1answer

Started running rough and stalled. runs better if choke is pulled out but still stalls if load. was going to replace plugs, fuel filter and air filter to see if it helps. any suggestions?
Could be what Ray says, or could be very dirty fuel filter, partially blocked gas line, defective fuel pump or slow leak in gas line (although you'd almost certainly notice that from the smell or just plain see it). My old DR Field and Brush Mower was doing exactly the same thing, and it turned out to need the carburetor replaced.
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May 07, 2016 • Cub Cadet Riding Lawn Garden Tractor 25hp...
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Lx288 mower quit running I thought it was out of gas so filled with gas started up but wouldn't keep running.
  • If unit will not run without choke , the main jet in carb is clogged and the carb needs to be cleaned out.
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Nov 07, 2015 • Garden
0helpful
1answer

Runs for 10 min and stalls.
check your vent hole on fuel cap,or just loosing the gas cap so it can get air if this helps than you know it is the vent.
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Aug 12, 2015 • John Deere Riding Lawn Mower. EZtrak Z225...
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Have a Zero Turn mower (50 inch deck), engine will only run with choke full on and bogs down or stalls when demand put on engine ie. mowing in high grass. Changed filters (fuel and air) with no change in...
You have a lean fuel condition. This means your carburetor is clogged. By turning choke on you are changing the air/fuel ratio in the carb. You will need to bring this in to a good repair shop to have the carb cleaned.

I’m happy to assist further over the phone at https://www.6ya.com/expert/layne_0fccff498c319c32

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Aug 01, 2013 • Garden
0helpful
1answer

I have a murray push mower 6-22271 briggs straton 4 hp. it start and then stalls . filter clean. choke fully closed when control is in full forwrd run/choke position. I pour gas in the throat and pull...
Your carburetor needs cleaned. It is dirty/has debris in it. If it has a bowl that is. If it has a diaphram (carburetor mounted on the fuel tank), replace the diaphram. They go bad.

I hope this helps get you going.
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Jul 28, 2011 • Garden
0helpful
1answer

Stalls after 20 mins. of running fine. (Starving for gas)
From the rear of machine look at the top left of fuel tank for the fuel line.Where line comes out of tank see if it is pinched where it goes down between frame and tank,grab line and see if it moves freely.If that is OK loosen fuel cap after 10 minutes of run time to see if your vent hole in cap is working.These are 2 common problems for the L series mowers.
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May 22, 2010 • John Deere 420,1020,2010,2020,2510,2520...
1helpful
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Have a Weedeater trimmer model SST25. I can start it with full choke and keep it running at half choke but when I try to use it at half choke or run position it stalls. Have tried adjusting the idle...
carburetor needs to be cleaned. probably wouldn't hurt to clean the fuel filter as well.
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May 03, 2010 • Garden
1helpful
1answer

Engine only runs with choke full on. Dies when off full choke.
Hi Dave, it sounds crazy, but try this. Check your gas cap. It could be clogged, causing a vacuum to occur in the tank, and therefore not allowing the carb. to take on gas. It usually take 10-15 min. for this to occur. The next time you run the mower and it starts to stall out, loosen the gas cap and see if it begins to run again. If it does, then you know that the gas cap is clogged.

Jim
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Jun 04, 2009 • Craftsman Garden
1helpful
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Cub cadet lt1050 poor running
when you cleaned the carb was the needle replaced. also what is the compression on this engine. if a unit has low compression they will sometimes only run on full choke. is there good fresh gas in this unit. No water..(if in doubt trow it out)
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Mar 10, 2009 • Cub Cadet Street Sign- tractor lawn riding...
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20 hp 42 in. Deck Lawn Tractor - CA Model

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Hi, I have a 13.5hp Briggs & Stratton motor which starts and will only run on choke slow rpms and mild smoke.

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