Model #917377553 CRAFTSMAN Walk Behind Lawnmower, Gas

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Question and Answers

Q:

Model #917377553 lawn mower how do you check the carb to see if it is plugged up

A:

Walk behind mower will not start.

I am sorry to hear you mower is giving you problems. Please use the following to help get this issue resolved.

  1. Prime the engine 5 times and try to start.

If the engine does not start, you need to determine what is causing the problem. The engine need three thing to start and they are fuel compression and spark. Use the following instructions to determine what is missing.

The first check is going to be if the engine is getting spark. Remove the spark plug from the engine and connect it to the spark plug wire. Use a pair of insulated pliers to the base of the spark plug against a metal part of the engine. Now have someone pull the starter rope or engage the starter if your engine has one. When the engine is turning over you should see the spark plug spark. If the plug does not spark, disconnect the spark plug and insert a screwdriver into the boot of the spark plug wire. Make sure to hold onto the handle of the screwdriver. Hold the metal portion of the screwdriver close to a bare metal part of the engine. Now turn the engine over again with the starter. If you see a spark, you need to replace the spark plug. If you do not see, a spark most likely the ignition coil is defective.

Once you have determined the engine has spark you have to check for fuel. The easiest way to check for a fuel problem is to remove the air filter and pour a few teaspoons of fuel into the throat of the carburetor. Then try to start the engine. If the engine acts as if it wants to start or runs for a short time and stalls the problem with the engine is a fuel issue. Most likely, the carburetor needs to be cleaned or replaced. To clean the carburetor you have to remove the float bowl and spray the passages with carburetor cleaner and compressed air. If you are not sure how to clean a carburetor, you can use the following link to a video I found on cleaning a carburetor. Carburetor cleaning I have given this link as a guide it might not be the same as yours. I found this link and we are not associated with this video. If cleaning the carburetor does not cure the problem, I recommend replacing it.

If the engine did not attempt to start with pouring the gas in the carburetor, I recommend checking the compression of the engine. To check the compression remove the spark plug and tuck the wire out of the way. Hold your finger over the spark plug hole and turn the engine over. When the engine turns over the compression should force air past your finger. If the engine does not force air out part your finger there is an internal engine problem. I recommend having a service technician diagnose the engine.

If you have verified all three this the engine need to run and it will not start I recommend that you have the mower serviced. I hope this is helpful. If you need further assistance, please submit more details.

Thank you for using Manage my life.

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 by a Sears technician. Here is a link that will provide the nearest drop-off locations: Sears Home Services .

If you need further assistance or run into problems, please reply below.

Thank you for using Manage my life.

Mark T.

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Mark T -
Sears Technician
October 25, 2010
Q:

What is the magneto setting ? 917377553 Craftsman Rotary mower

A:

Thank you for your question.  I am sorry you are having this problem with the mower. I will be happy to assist you. The air gap for your model is 0.010". I hope this is helpful. Please let me know if you need further assistance. Thank you for using Manage my life. Mark.

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Mark T -
Sears Technician
July 18, 2013
Q:

I put in a new primer bulb for the carburetor. Why is it leaking gas?

A:

The hole in the primer bulb is to let air into the bulb. When you push the bulb you force the air through the venturi and the air draws gas with it.

The reason the gas is coming out the hole in the primer bulb is either the carburetor has some obstruction in the fuel travel passages or the float is letting the carburetor overfill.

The float might have a leak in it and has filled with gas. This keeps it from floating and turning off the flow of fuel from the gas tank. You might also have some debris in the seat the float needle shuts off causing an overfill.

Remove the carburetor from the engine and take the bowl off. Inspect the float and the seat and needle.

If you don't find your problem there, the carburetor will need to be cleaned and rebuilt or replaced.

Read More
Jimmy K -
Sears Technician
May 09, 2008

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