Model #917388107 CRAFTSMAN Walk Behind Lawnmower, Gas

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Question and Answers

Q:

917.388107 mower

A:

Good afternoon.... I can completely relate to your concern over Govt regulations having an impact on your mower.... How does the motor sound? Are you getting an even cut? Does there appear to be anywhere where it might be binding? Give us any symptoms you might be having. Otherwise, if the motor sounds healthy and is not smoking, if the unit is not vibrating or if the cut is clean and even, I would assume that the mower is operating just fine. Enjoy your new mower and have a nice day.

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Henry -
December 02, 2012
A:

Hi Henry: I know nothing about how this thing is supposed to work although I have owned several rotary mowers in the past. To start it, I find that I must put the squeeze bar in the wide open position. It starts right up and seems to run fine at about 2/3 of the speed that I would expect for this setting. If I release the bar, the engine makes no attempt to idle, it just dies. I downloaded the manual and found no useful information when it comes to throttle travel or idle adjustment . In fact, the manual makes me believe that this thing only has two speeds....medium and off. Just like an electric. How do I make the thing run a bit faster and idle? Thanks dies

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William -
December 02, 2012
A:

Thank you for your question.

I will be happy to assist you. The first safety feature you should check is the engine brake. When you start the engine and release the engine control bail the engine should stop. If the engine stops check the rear skirt on the mower housing. The rear skirt is the plastic flap between the rear wheels. If the rear skirt is intact, the mower should be fine to use.



I hope this is helpful. If you need further assistance, please reply below with more details.

Thank you for using Manage my life. Mark T

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Mark T -
Sears Technician
December 03, 2012
A:

Hi Mark I inherited this machine know nothing about how it is supposed to work although I have owned several rotary mowers in the past. To start it, I find that I must put the squeeze bar in the wide open position. It starts right up and seems to run fine at about 2/3 of the speed that I would expect for this setting. If I release the bar, the engine makes no attempt to idle, it just dies. I downloaded the manual and found no useful information when it comes to throttle travel or idle adjustment . In fact, the manual makes me believe that this thing only has two speeds....medium and off. Just like an electric. How do I make it possible to vary the speed of the thing and make it run a bit faster and idle properly? Thanks

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William -
December 03, 2012
A:

William,

Thank you for adding more details. The bar you are squeezing is the engine brake control. When you pull the bail the engine will run. When you release the bail, it engages the brake and kills the engine. It sounds the unit is working the way it was designed. The newer mowers do not have a throttle control on them. The reason is if the engine does not run at the proper speed the engine can over heat and does not cut as well. To determine if the engine is running at the proper speed you will need an rpm meter. If you have a meter, you can bend the tab the governor spring is attached to. This pulls on the governor and increases the speed. The engine should be set 3250 rpm.

Thank you for using Manage My Life! Mark T.

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Mark T -
Sears Technician
December 04, 2012
A:

Hi Mark: OK, because of that brake feature, I will assume that these mowers cannot be allowed to idle hence no idle adjustment screw. I do not have a tach but I am familiar enough with small engines to say that it is running in the 3000 RPM area, I was expecting something more like 4500-5000 but if that as what it is supposed to be doing, I'll let well enough alone assuming that it does not bog down in high grass. Thanks William ,

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William -
December 04, 2012
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Q:

How do I clean the carburetor bowl, and assembly on my mower, model # 917388107? thank you.

A:

I know how important it is to be cautions when working with major parts on a mower, and having detailed instructions is always helpful and I will be happy to assist. While you are waiting for an expert answer, I did manage to find three links that will provide you with some good tips to help you with your project. I hope my links are useful.

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Joseph P. -
April 19, 2011
A:

Thank you for you question.

I am sorry you are having a problem with the mower. We do not have any illustrated instructions for cleaning the carburetor. However, I did find a video that will help you with cleaning the carburetor. The mower in the video is a different engine but the steps are the same. Please click here to watch the video. Just make sure to drain the fuel tank and work in a well-ventilated area.

I hope this is helpful.

Please let me know if you need further assistance.

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
April 20, 2011
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Q:

mower won't start

A:

This is the time of year to get the lawnmower in top operating condition. While you wait for the expert, you can check a previous expert post with good troubleshooting advice that may help. I also added the owner's manual if needed.

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Barbara H. -
April 08, 2011
A:

I do not show a spark arrestor on this model. Most likely there was a little bit of trash in the bottom of the tank that was pulled into the carburetor as the engine was running out of fuel. You can take the bowl off of this carburetor to clean it out and see if that solves it. If not, you may need to go ahead and clean out the entire carburetor assembly.

Thank you for using Manage My Life!

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XX Wade_ -
Sears Technician
April 09, 2011
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