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stacysara1983

My lawn mower will start but idles low and then shuts off...why?

Craftsman Rotary Lawn Mower Model 917.370430

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Craftsman , Lawn Mowers
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3 Answers from these members:
Mark T
Thank you for your question.

Usually when the mower starts and stalls, right away it has a dirty carburetor. First, make sure the fuel is no older than 5 weeks old. I would think the fuel is fresh this late in the mowing season. Next check the air filter. If the air filter is plugged the mower may not run. If the air filter is clean and the fuel is fresh, I recommend cleaning the carburetor.

To clean the carburetor you have to remove the spark plug wire and tip the mower on to its side. Make sure the oil fill tube is towards the ground. Then remove the float bowl nut on the bottom of the carburetor. Some fuel will leak out so do this in a well-ventilated area. Remove the float bowl, clean it with carburetor cleaner, and dry it. Do not get carburetor cleaner on the rubber gasket. The cleaner will expand the rubber and renders it useless. Next, put the straw on the spray nozzle of the carburetor cleaner. Spray the cleaner in to the holes where the float bowl nut came from. These are the fuel pick up tubes. Once those are flushed, clean the holes on the float bowl nut. I recommend cleaning the holes with bread tie wire and carburetor cleaner. Then assemble the carburetor.

Tip the mower back up right and test the operation. If the engine does the same starting and stalling, I recommend replacing the carburetor.

I had a customer send me a link to video he found that shows how to clean the carburetor. The engine is not exactly the same as yours but it will give you a general idea. Here is a link to that

video



I hope this is helpful.

If you need further assistance, please reply with more details below.

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.
by Mark T Earned 1,607 community points in Craftsman
September 17th, 2012
Comment
0 votes
Mark T
Thank you for your question.

Usually when the mower starts and stalls, right away it has a dirty carburetor. First, make sure the fuel is no older than 5 weeks old. I would think the fuel is fresh this late in the mowing season. Next check the air filter. If the air filter is plugged the mower may not run. If the air filter is clean and the fuel is fresh, I recommend cleaning the carburetor.

To clean the carburetor you have to remove the spark plug wire and tip the mower on to its side. Make sure the oil fill tube is towards the ground. Then remove the float bowl nut on the bottom of the carburetor. Some fuel will leak out so do this in a well-ventilated area. Remove the float bowl, clean it with carburetor cleaner, and dry it. Do not get carburetor cleaner on the rubber gasket. The cleaner will expand the rubber and renders it useless. Next, put the straw on the spray nozzle of the carburetor cleaner. Spray the cleaner in to the holes where the float bowl nut came from. These are the fuel pick up tubes. Once those are flushed, clean the holes on the float bowl nut. I recommend cleaning the holes with bread tie wire and carburetor cleaner. Then assemble the carburetor.

Tip the mower back up right and test the operation. If the engine does the same starting and stalling, I recommend replacing the carburetor.

I had a customer send me a link to video he found that shows how to clean the carburetor. The engine is not exactly the same as yours but it will give you a general idea. Here is a link to that

video



I hope this is helpful.

If you need further assistance, please reply with more details below.

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.
by Mark T Earned 1,607 community points in Craftsman
September 17th, 2012
Comment
0 votes
Manage My Life
The lawn mower is great for helping with work around the yard. I found some information for you that I am really hoping will help you until your expert answers your question. I am adding the link below to help you with your question while you wait for your expert response. It may take 24-48 hours. I do hope that this will help you with the lawn mower.
by Manage My Life
September 16th, 2012
Answered in 6 minutes
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