Model #917388620 CRAFTSMAN Walk Behind Lawnmower, Gas

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Question and Answers

Q:

Need to replace primer bulb 917388620 Craftsman Gas, walk behind lawnmower

A:

Thanks for the inquiry and for using SearsPartsDirect.com.
Sorry to hear of the damaged primer bulb on the carburetor, I know how frustrating that is to have occur.
The primer is held into place by a retaining ring. You can use a flat head screwdriver to pry out the retaining ring for the primer bulb. You can also try to use needle nose pliers to pull it out as well, but I've found that the screwdriver seems to work best.
Anytime you need engine related parts such as the primer bulb or tune-up items, you have to identify the engine model number and input that into SearsParts. Based upon mower model 917.388620, I see it's using a Tecumseh engine with a model of 143.640271. Based upon that model number, I see the primer bulb with retainer ring is part number 640259. 
For convenience, I have included a blue link below that you may click on to be directed to the SearsParts site to view and purchase when needed.

Primer W/Retainer for Model 143.640271

Hope this helps and thanks for using SearsPartsDirect.com.

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Jeff Wallace Sr -
Sears Technician
May 14, 2014
Q:

Pull starter wont start engine 917.388620

A:

I can understand how importnat it is to have the right information for your lawn mower. When the pull start breaks like this, then it needs to be replaced. It is the easiest way to fix this. The link below will give a good idea on how to do this. I hope this helps. Thank you for using Manage My Life.

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aashe -
June 09, 2013
A:

This can very likely be fixed. You'll need to take the starter off of the engine and inspect the "dog ears" on the starter to see if the have broken off or become bent. If they appear fine then the problem may very well be with the starter cup on top of the flywheel.

Thank you for using Manage My Life!

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Wade_B -
Sears Technician
June 10, 2013
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Q:

I Hit a rock with my walkbehind mower and now horrible grinding noise and smoke coming out of muffler also gas leaks out at the cylinder head gasket 917.388620

A:

I can see how this would be a very inconvenient problem for you. While you are waiting for your expert answer, I have found a link that will provide some information and troubleshooting for the isse. I would suggest that you have a techincan look at the problem. I hope this helps.

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aashe -
August 28, 2011
A:

The grinding noise may be the blade bent and rubbing against the mower deck. Check the blade to see what condition it is in. It is also possible that the crankshaft is bent. The smoke from the muffler and gas from the head gasket are likely related to each other. If the head gasket is blown there will be gas and/or oil leaking from there when the engine is running. The head gasket leaking will also cause the engine to smoke when running.

Check to make sure the crankshaft is not bent before you go too far into repair this as a bent crank means the engine is done. Remove the spark plug from the engine and then put the mower on its side (carburetor up). Spin the blade by hand (use a glove so you do not cut your hands) and watch the center blade bolt to see if it moves in a circle or an oval. If it moves in an oval then the crankshaft is bent.

Thank you for using Manage My Life!

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XX Wade_ -
Sears Technician
August 30, 2011
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