Model #358797961 Craftsman blower, gas

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Question and Answers

Q:

Craftsman Gas Power Blower: Model 358-797961, Ser. 1L326J814. Walbro Carborator; N12, 5-4622/WT141.

A:

Thank you for your question. I am sorry you are having a problem with the blower. You are correct, that is a misprint in the manual. You should turn the mixture screw clockwise until it seats. Then back it out about 1 and 1/8 turns. This should be close enough to get it to idle. Then make the final adjustment once it is running.

I hope this is helpful. Please let me know if you need further assistance.

Thank you for using Manage my life.

Mark.

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Mark T -
Sears Technician
December 24, 2012
A:

grandpaking, If the engine will only run with the choke on, the engine is not getting enough fuel. Even though you just cleaned the carburetor I suspect one of the passages is partly plugged. The reason I say that is because you do not get any change when you try to adjust the mixture screw. If you turn the screw out it should provide more fuel to the engine so that you can turn the choke off. If it does not do that something has to be blocking the fuel from going through the jet. If cleaning the carburetor again does not cure the problem the engine could have a vacuum leak. To check for a vacuum leak you need to start the engine. Then spray WD-40 around all the gasket and seals. If the speed of the engine changes when you spray a particular area the seal or gasket is defective. I hope this is helpful. Please let me know if you need further assistance. Thank you for using Manage my life. Mark.

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Mark T -
Sears Technician
December 29, 2012
A:

grandpaking, It is possible for the muffler to plug up and cause the problem. Usually when this happens, the unit will not start. To check the muffler, just remove it and check the operation. Be sure to wear hearing protection because it will be loud. If the engine runs normally the muffler is plugged. The muffler on this model should come apart. Once apart you can clean the screen with carburetor cleaner and a wire brush. Please let me know what you find. Mark

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Mark T -
Sears Technician
December 31, 2012
A:

Grandpaking, If the muffler is fine, I suspect the unit still has a fuel related problem. What you can do is rule out everything else first. I recommend doing a compression check on the engine. If you do not have a compression gauge, you can loan one from Auto Zone. Once you have the compression tester screwed into the sparkplug hole pull the starter rope a few times fast. You should have a reading of 90 psi or more. If you do not have this pressure there, is a problem with the cylinder and rings. If you do have the correct reading, I recommend checking the crankshaft seals and gaskets. To do this you will need a can of WD-40 and the straw. With the engine running, spray the WD-40 around the gaskets and the seals. If the speed of the engine changes the seal or gasket, you just sprayed is leaking. If the engine does not change speed when doing the test, the gaskets and seals are fine. The only thing left would be the fuel system. If you have cleaned the carburetor, you can try cleaning it again but this time I recommend letting it soak in carburetor cleaner and blowing it out with compressed air. If this does not work, I recommend replacing the carburetor. I hope this is helpful. Please let me know if you need further assistance. Thank you Mark

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Mark T -
Sears Technician
February 26, 2013
A:

grandpaking, Usually the lifter lever should not need to be adjusted. If you feel it may be bent I recommend comparing it to the image below. If it looks bent, you can try to adjust it by eye. If that does not work, you will need the gauge. The part number for the gauge is 500-13. You can purchase this online. I also found a service manual for the Walbro WT. Just click on the following link. Walbro Wt service manual Please let me know what you find. Thank you for using Manage my life. Mark.

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Mark T -
Sears Technician
April 07, 2013
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