Craftsman Gas, walk behind lawnmowermodel #917378941
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I have a Craftsman Push Lawn Mower Model #917.378941 with the 7.0 B&S OHV Engine.
I have had this mower since new (about 7-8 yrs ago) and never had an issure with it. Recently, it would not start well, and while cutting the grass would just stop. So I took it to a repair shop and they basically did a carb clean and rebuild. I get it back, and it works fine. About 3 months have past, and now it wont start or even stay running unless I keep the primer bulb pushed in at all times. So I made a little device with zip ties and nuts to keep it pressed in and it starts, and runs. Otherwise it starts..runs about 3 seconds and dies. The spark plug is new, the carb was just rebuilt and cleaned 3 months ago, and the air filter is new. What is my problem? I don't want to get a new mower, this has been a good machine. Want to keep it. Any Help would be much appreciated.
Posted April 24, 2013
Joseph , April 24, 2013
i know how important it is to have a good working mower in the home so that you can keep the lawn nice and trimmed. i did some research and i was able to find a link that will provide you with some good information. click here for the link. i hope this helps with your research while you wait for your expert response.
Jeff, April 24, 2013
in the event that the carburetor needs to be replaced can i use carburetor replaces briggs & stratton 498170 for this mower? thank you for your time. jeff
Joey S, April 26, 2013
thank you for your question and i understand your concern.
it's very odd that just keeping the primer bulb pressed in will keep the engine running. there are basically two types of primer bulb; one will have a hole in the end of the bulb which is used to allow air in and when pressed it pushes air and the other type of primer bulb has no hole which actually pushes fuel when pressed. i do not understand how keeping the primer bulb pressed in would make any difference in this case. i recommend taking a good look at the primer bulb and see if it's not cracked somewhere. if the primer bulb looks okay, then there is likely an issue with the carburetor.
i added a video showing how to repair a carburetor if you feel confident in doing so. you may want to take it back to the servicer who cleaned and rebuilt the carburetor 3 months ago and see if they will repair it at no charge.
i hope this is helpful. if i may be of further assistance as more details become available, please reply to this post.