Self Propelled Wheels Not Working / Spinning - Snowblower Forum : Snow Blower Forums
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post #1 of 19 Old 01-24-2016, 06:02 PM Thread Starter
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Angry Self Propelled Wheels Not Working / Spinning

Just got a hand me down snow blower and everything worked great yesterday when I used the snow blower. However sometime today the self propelled wheels stopped working. I leave a very steep hill so it is worthless without this feature.

I tried to google some various issues but it appears everything is engaging but for whatever reason the wheels will not turn. If I pick the blower up and spin the wheels with my feet the linkage will keep them turning but if any pressure is applied they will stop turning like there is no torque to move them. I have three videos that I think will very helpful. Turn your speakers down. That snow blower is loud. See below:





Last edited by mikedahammer; 01-24-2016 at 06:04 PM.
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post #2 of 19 Old 01-24-2016, 06:08 PM
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yes, the wheels should turn with that large gear.
Missing a pin between that large gear and the wheel axle?
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post #3 of 19 Old 01-24-2016, 06:14 PM
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What he said. I think it's a bolt, looks like an Estate I have but a bit newer. Could be a roll pin ??

What's the model number ?? You can find the part number here - - > Genuine MTD Parts - Snowblower and Lawn Mower Replacement Parts
And do a little on line shopping or even call around local to see who has it.
You might want to check those axle bushings for play as the wheels seem to shake a bit when it's running.

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Make sure the windows are up before the snow plow goes by !!

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post #4 of 19 Old 01-24-2016, 06:21 PM
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There is a woodruff key under the large (final drive) gear. The horizontal motion of the gear is controlled by a split pin. My guess is that the woodruff key has sheared off or is somehow missing. Your friction disk also needs a thorough cleaning.
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post #5 of 19 Old 01-24-2016, 08:02 PM
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Quote:
Originally Posted by Clutch Cargo View Post
There is a woodruff key under the large (final drive) gear. The horizontal motion of the gear is controlled by a split pin. My guess is that the woodruff key has sheared off or is somehow missing. Your friction disk also needs a thorough cleaning.
I had one with this. The key was nowhere to be found.




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post #6 of 19 Old 01-24-2016, 08:16 PM
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I had one with this. The key was nowhere to be found.
Not sure I understand. I have a 1995 8/26 and the exploded view of the transmission shows a woodruff key.
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post #7 of 19 Old 01-24-2016, 09:48 PM Thread Starter
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I am not sure what a woodruff key is but i will google. I have attached an image of the model and serial number so hopefully this helps:

317E662G013 1I196B50054 for easier copy and paste. Thanks for the help.



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post #8 of 19 Old 01-24-2016, 10:01 PM
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p/n: 914-0126

Description: 3/16 x 3/4 Dia HT

Translation: 3/16" wide x 3/4" in diameter, Heat Treated. A woodruff key is actually not a 3/4" diameter circle, but it looks like a half moon. You do not have to buy one from an MTD dealer IF (and that is a big if) you can find one that you KNOW is heat treated. If it is not heat treated, it will shear off, which is what may have happened already.

You will also need a 915-0249 roll (or split) pin.

Hope this helps.
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post #9 of 19 Old 01-24-2016, 10:03 PM
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This one has a roll pin, MTD 715-0249, or your local Ace.
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post #10 of 19 Old 01-24-2016, 10:41 PM Thread Starter
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I will check my local hardware store tomorrow and see what they have.

From the information I have gathered it looks like the woodruff key slides into the gear so the shaft will turn the wheels instead of the shaft just spinning on itself and the roll pin keeps the woodruff key from sliding out? Is that close? This is my first small equipment repair job and I appreciate the education and advice.
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