Model #CV740-0016 Kohler engine

  • Fuel System
    3 Results
  • Oil Pan/lubrication
    3 Results
  • Engine Controls
    3 Results
  • Blower Housing And Baffles
    3 Results
  • Air Intake
    3 Results
  • Starting System
    3 Results
  • Ignition/electrical
    3 Results
  • Crankshaft
    3 Results
  • Exhaust
    3 Results
  • Cylinder Head/valve/breather
    3 Results
  • Crankcase
    3 Results

Question and Answers

Q:

My Craftsman Garden Tractor ran for 40 minutes and then I shut it off, ran inside, came back out and the mower won't start. What could be the problem??

A:

Thank you for your question.

I am sorry you are having a problem with the tractor. If I have understood what you have stated the engine will turn over but will not start. The tractor does have a fuse but the tractor would not do anything if it was blown. The fuel pump on your tractor on the tractor works off vacuum from the engine. To see if it is working you can remove the fuel line from the carburetor and place it into an approved container. Then turn the engine over. If the fuel comes out of the hose the pump if good. If the fuel does not come out remove the hose before the pump and check for fuel flow.

Here are the basic checks to make on a mower that will not start. You need to determine if the problem is no fuel, no compression, or no spark. Remove the spark plug and hold your finger or thumb on the hole the spark plug screws into. Have someone pull the starter rope and the compression should push your finger off the spark plug hole. This will tell you the valves are operating inside the engine and you have compression. Pour a thimble full of fuel into the hole the spark plug came out of. Quickly install the spark plug and pull the starter rope or engage the starter. The engine should try to start. This would tell you there is a spark and the engine will run if you get fuel. If the engine doesn't try to start, pour another thimble full of fuel into the cylinder. Look at the anode of the spark plug and see if it is wet. Try to start the engine again. If it still doesn't try to start, remove the spark plug and connect the ignition wire to the spark plug. Hold the bottom of the spark plug to a clean area on the engine block. Use insulated pliers or gloves to hold the spark plug to prevent shock. Get someone to pull the starter rope or engage the starter and see if you get a blue spark from the anode of the spark plug to the base of the plug. If there is no spark the ignition module on the engine is bad. If you have spark the problem is in the fuel supply. Did you run the engine after draining the fuel to burn the fuel out of the carburetor? If not the carburetor will be clogged with the remnants of the old fuel and need to be replaced. If you ran the fuel out of the carburetor, the diaphragm or float is probably just dry and not flexing. You should take the carburetor apart and clean and soak the diaphragm with fuel or clean the float, needle, and seat. If you require further assistance please submit more details.

Here is a link to order any parts you need. Sears Parts Direct .

If you do not feel confident repairing this problem yourself, then you can have it repaired at your home by a Sears technician. Here is a link for the website: Sears Home Services .

Thank you for using Manage my life.

Mark T.

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Mark T -
Sears Technician
June 25, 2011