Model #917388420 CRAFTSMAN Walk Behind Lawnmower, Gas

  • Lawn Mower
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Question and Answers

Q:

Craftsman sure start lan mower 917388420

A:

Check on the engine for the model number specific to the engine. You can click the link below and use that number to look up parts information and find/order a replacement tank for your mower.

Thank you for using Manage My Life!

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Wade_B -
Sears Technician
September 14, 2013
Q:

917.388420 will not run when hot

A:

I can understand your frustration over your mower never starting when it is hot. While you are waiting for your expert answer, I did so me research on the unit. At this time, I was unable to locate information that would be helpful in regards to your question. Some of these questions that are asked will need specific research and will be answered by an expert with-in two business days but usually sooner.

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Julio -
May 17, 2013
A:

Thank you for your question.  I am sorry you are having problems with your Craftsman mower model 917.388420.   This model has an automatic choke on the engine. Once the thermostat on the muffler heats up it holds the choke off. If you do not let the engine run roughly 5 minutes the first time you start it, it might not restart. If you are letting run for at least 5 minutes the problem could be the fuel is old or the main jet in the carburetor is partly plugged. The main jet has small holes that can start to close if fuel is left in it over the winter. If the gas is fresh, I recommend cleaning the carburetor. I found a great video that shows how to clean the carburetor. Click here to watch the video. Be sure to do this type of repair in a well ventilated area and use caution when working around fuel.       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. I hope this is helpful. Please let me know if you need further assistance.  Thank you for using Manage my life. Mark T.

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Mark T -
Sears Technician
May 20, 2013
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Q:

Craftsman # 917388420 lawnmower .The automatic choke stays open and the lawnmower will not run If I hold it closed, it will.

A:

I am sorry to hear about the issues you are having with your Craftsman mower. I did some research for you at the ManageMyLife website and found this expert response that may shed some light on the problem. I have attached the link below. Some of these questions that are asked will need specific research and will be answered by an expert with-in two business days but usually sooner.

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James -
April 18, 2012
A:

I did see this answer earlier. But this is not the answer to the problem . I clean out the carb . This auto choke mechanism seems to " free float" and it float to the open position. I think it might need a spring or adjustment ....

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David -
April 18, 2012
A:

Thank you for your question on the lawn mower engine not running with the choke off.

This Briggs and Stratton engine has a thermally operated choke system.

If you can hold the choke closed and the engine will run indicates that run circuit in the carburetor is plugged.

Since this model has a primer bulb by which to help the engine start the run circuit has to take over once the engine has started.

I would suggest cleaning or having the carburetor cleaned and that should solve your problem.

I will give you a cleaning process if you wish to try to clean the carburetor yourself.

If that does not work then you may have to do a more through cleaning of the carburetor.

To clean the carburetor, tip the mower on its side with the carburetor up. Locate and remove the float bowl nut and the float bowl. Make sure to remove the float bowl gasket. It is a large rubber o-ring. As long as you do not get carburetor cleaner on the o-ring, you should be able to reuse it.

Find a bread tie that has the wire in the center. If you take the coating of the bread tie, the wire works well for cleaning the small ports of the bowl nut. Push the wire into all of the holes you see on the bowl nut and then spray them out with carburetor cleaner. Clean the float bowl with carburetor cleaner to remove any debris. Now attach the straw to the spray nozzle of the carburetor cleaner. Position the straw into the hole the bowl nut threads into and spray to clean the main jet out. Once the jet is cleaned, carefully tip the mower back up right. Make sure to have paper towels down when doing this because fuel is going to leak. When the mower is tipped, fuel should flow through the needle and seat. Make sure you have a good flow from the carburetor. You are not looking to flood the area with fuel so be ready to tip the mower back on its side. Just tip it long enough to see the fuel flow. _Make sure to do this in a well ventilated area.

I hope that this will help you.

Sam A.

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Sam A -
Sears Technician
April 20, 2012
A:

Man, oh Man.............................I "Thought" that I had the nut (Jet) cleaned and then found that it actually "T" s with the jet ports. After cleaning "Both Sides"........well.................it runs like it did when it was new. Thanks for the info. By the way.............Liquid Wrench seems to clean well and without damage to the "O" rings. Thanks a Million.

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Joe -
April 28, 2012
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