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Craftsman lawn mower - starts, sputters, revs, dies. new gas, sparkplug, air filter, and oil.

Craftsman lawn mower (917.389061) starts, sputters, revs, dies. new gas, sparkplug, air filter, and oil. Stars on first pull. Runs about normal for a second or two, then begins to sputter like it is going to die, then revs back up again, and finally dies. Sometimes it cycles thru this several times before dying. I have poured out and replaced the the gas, and oil, as well as replacing the air filter and spark plug, no change.

Craftsman , Lawn Mowers
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2 Answers from these members:
Manage My Life
I know how frustrating this problem can be when you are trying to get outdoor chores done. I always keep my owner's manual on hand for these type of problems. Sometimes it can be helpful. I attached the owner's manual for your mower below, in case you did not have it. I also found a similar problem on a web site that may offer some solutions while you wait for the expert to answer. Hope that mower is working soon.
by Manage My Life
October 10th, 2010
Answered in 17 minutes
0 votes
Manage My Life
There are 2 things that come to mind based on everything you said is going on.

Plugged vent in fuel cap.

Carb in need of cleaning.

To check for the fuel cap issue, just loosen the cap a bit and see if the problem goes away.

To clean the carburetor, you will need about 15-30 minutes and a can of spray carb/choke cleaner (available at any auto-parts retailer).

I prefer to take the carburetor completely off the engine to clean it. Once it's off, remove the screw that holds the bowl on. Clean the bowl out with the carb cleaner and a cloth. Then spray cleaner up through the valve and clean the needle. Any jets that are visible need to have cleaner sprayed down through them. If you see obvious signs of blockage that the spray will not blow out, you can use a very fine wire to clear the hole out.

This should take care of the problem with the engine not running as it should. If the mower sat with fuel in the tank for more than about 4 weeks, I can tell you that you need to go ahead and plan to open the carb up and clean it.

Thank you for using Manage My Life!
by Manage My Life
October 11th, 2010
Answered in 20 hours
0 votes
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