Model #247797852 CRAFTSMAN Chipper Shredder/Vacuum, Gas

  • Chipper-shredder
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Question and Answers

Q:

Flywheel / Impeller removal 150112-0532-E9 Briggs&stratton Engine

A:

Searspartsdirect.com is always a great resource to find the answers to your parts questions. Your Sears partsdirect expert will research your question and respond within two business days but usually sooner. Thank you for using Searspartsdirect.com!

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Joseph P. -
April 02, 2013
A:

Thank you for your question.  I will be happy to assist you. I had a customer ask the same question not too long ago. I recommend reading that thread. Click here to be taken to that thread. It explains how to remove the impeller and repair it if needed.  I hope this is helpful. Please let me know if you need further assistance.  Mark T.

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Mark T -
Sears Technician
April 04, 2013
A:

Mark, thank you for the response. However I cannot get the link to work to take me to the thread. John

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John -
April 04, 2013
A:

I am sorry the link did not work. copy and paste the following address in you browser. http://www.managemylife.com/mmh/questions/225741-sears-chipper-shredder-m-247797852-does-remove-shredder-chipper-assembly-engine-crankshaft?page=2 Please let me know if you need further assistance. Mark

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Mark T -
Sears Technician
April 05, 2013
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Q:

Sears chipper/shredder M: 247.797852. How does one remove the shredder/chipper assembly from the engine crankshaft?

A:

It is important to get correct instructions to disassemble your Sears chipper so that you do not break or damage any parts. While you are waiting for an expert answer, I recommend you check your owners manual for more information about dissembling parts. Below is a link in where you can enter your model number and your owners manual will pop up. I hope my link is useful.

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Joseph P. -
October 11, 2010
A:

Thank you for your question.

I have checked and the crankshaft is 1inch straight shaft. I suspect the flywheel is rusted to the crankshaft. I recommend soaking the crankshaft and the flywheel with a product called PB blaster. I think it works better then WD-40. Then if you have a puller that will work place the bolt back into the center hole. Just leave it loose (about 3 turns out). Then once you have tension on the puller hit it with a hammer. The shock should help break it loose. Then back the bolt out some more and spray it down. Tighten the puller and hit it again. You might need to get a longer bolt from the hardware store. You want to make sure the bolt is in the hole at least 4 turns, so it does not mess the thread up in the crankshaft.

I hope this works for you.

Please let me know if you need further assistance.

Thank you for using Manage my life.

Mark T.

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Mark T -
Sears Technician
October 12, 2010
A:

Thanks Mark T. I'm not trying to remove the flywheel, but the opposite end of the crankshaft Chipper/shredder assembly. I'll try the PB blaster solvent. Have already tried and failed your removal suggestions (including the hammer & bolt in the hole) before I wrote my first message. It may be that the keyway on the shaft is partially sheared. Might have to go to someone who can add heat to the chipper/shreader assembly where it fits over the crankshaft and try gear puller at same time. Many thanks. marne6

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marne6 -
October 12, 2010
A:

I am sorry I did not make my self clear. I referred to the cutter assembly as a flywheel. If you have a helper and you are strong enough, you can install the bolt in the center hole. Make sure to leave it loose. Then lift the chipper by the cutter so the engine is hanging down. It only has to be lifted an inch or so off the ground. Then hit the bolt head. I have had some luck doing it this way. You can heat the cutter but it is most likely melt the crankshaft seal. If the seal looks ok, I would still replace it to be sure it will not leak. The part number for the seal is 495307S. Please let me know how this works out.

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Mark T -
Sears Technician
October 12, 2010
A:

Mark T. IT WORKED!!! Thought I'd give things another try before I left to buy some PB blaster. The center bolt went into the crankshaft threads about 1 1/2 inches. I left a qtr inch free at top. Drilled a very shallow (1/16 in) indent in the top center of the bolt. Then used large gear puller centered on the bolt and anchored onto the chipper/shredded assembly. Tightened it a lot and then hit the puller directly on top with a hammer and one rap on the shredder shaft side where it joins the crankshaft. BAM! Assembly was loose. Good thoughts from you on heat and the seals. Present one looks ok, but will replace as I do the engine repairs. Many, many thanks. marne6

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marne6 -
October 12, 2010
A:

I am glad you were able to remove the cutter without heat. I do not like to heat crank shafts because they can loose some of their hardness and bend easier. Let me know if you run into problems.

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Mark T -
Sears Technician
October 12, 2010
A:

I had the same problem but the puller method wasnt working - i ended up making a screw to push the flywheel off. Started with an M14 machine screw and turned that down to thread it with an M11 x 1.25 thread - the end (away from the head) was machined further to 8mm dia and 60mm in length. Greased it and tightened it into the hole at the end of the shaft - didnt take long after that.....

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Anonymous -
October 04, 2011
A:

Where can I get M11 x 1.25 bolts? Local hardware store doesn't have'm. They have M10 and M12. My 7.5HP Craftsman chipper shredder attempted to digest a chunk of 3/4" rebar that was hiding in the pile of leaves. It was unsuccessful. I need to get the flywheel off so I can figure out what to do next. Replace cutters? Bend and weld the flywheel into submission? Buy a new flywheel? Or - if the crankshaft turns out to be bent - just junk the whole thing? Half measures are not working, I HAVE to make up a puller. - Jerry Kaidor

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Jerry -
January 18, 2012
A:

I am sorry you are having a problem finding the bolts. I recommend a company called Fastenal. They specialize in all types of fasteners. The link posted below will locate a store near you. I do not recommend welding or bending the flywheel. I am afraid the flywheel will not be balanced after. An unbalanced flywheel could cause premature failure of the engine. Thank you for using Manage my life. Mark T.

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Mark T -
Sears Technician
January 19, 2012
A:

Fastenal doesn't have it. Grainger doesn't have it. McMaster-Carr doesn't have it. It is truly an oddball size. Nobody has it. The best bet might be to find a car or a piece of equipment that uses this size ( M11 X 1.25 ) . For example, Cadillac Catera head bolts. Another possibility would be to cut down a bigger bolt, like a 7/16 NF 20. Almost EXACTLY the same size as the M11x1.25. But just enough bigger so it won't fit. I do have a Sherline lathe that can do threading. Not easily, but it can be done. Also, there are M11x1.25 dies available on Ebay. So - I have ordered a M11 die AND some threading bits for the lathe. Gonna get this done one way or another.

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Jerry -
January 19, 2012
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Q:

Craftsman 5 hp mulching chipper- shredder model 247.797852 wood is bouncing back and comming out of the large hopper . .

A:

I can definitely understand the concern with the chipper shredder. I did some research and was not able to find an answer. Your expert will be able to help give you a detailed answer to help you. It may take 24-48 hours. I do hope all goes well.

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Marc H -
June 08, 2012
A:

Thank you for your question on the chipper blade and the chips flying out the main hopper.

If you are using the wood branch chipper port on the side of the chipper shredder and the chips are coming out the top hopper this would be normal, if they are too big to fit through the flails the first time. This also will happen to mine, but my model has a cover that flips over the hopper to keep the chips inside the hopper until the flails and chop them finer.

You may want to make sure that the chipper cutters are sharp and not worn down on either side so the chips are smaller.

Cutter heads for chipper shredder model 247.797852 .

The flail blades are designed for leafs and yard trimmings and blending soils for compost for the garden.

I hope this information will help.

Sam A.

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Sam A -
Sears Technician
June 12, 2012
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