Craftsman 536.881851 drive issues - Snowblower Forum : Snow Blower Forums
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post #1 of 22 Old 02-01-2015, 02:20 PM Thread Starter
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Unhappy Craftsman 536.881851 drive issues

Hey Everyone,

I bought a used 536.881851 last year and seem to be having some trouble with getting it to drive. At times, when the drive lever is depressed the unit fails to move. Sometimes after changing the drive speed and trying again it will go, other times changing the drive speed does nothing. The auger moves like a champ, but the drive isn't doing as well.

I did some digging around and it seems like the two most common causes are a worn friction disc or grease/dirt buildup on the friction wheel. I took the cover off and the disc seems in good shape and the wheel was mildly dirty. I cleaned both with some gas to give them a nice surface to hook up. I also checked the adjustment on the cable for the drive and it seemed fine as it was easily bringing the two into contact.

I buttoned it back up, fired it up and gave it a go. With the shifter set to forward 1, squeezing the handle resulted in no movement again . I changed the gear to forward 2 and got nothing. Changed to forward 3 and then gave her a squeeze and she jumped to life. I stopped and changed back to forward 1 and she started forward.

Anyone have any insight or ideas of what to check next or what might be causing this?
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post #2 of 22 Old 02-01-2015, 02:36 PM
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Sounds like the adjustment is not tight enough or some bearings are worn out. It could also be getting wet with snow or oil dripping in there.

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post #3 of 22 Old 02-01-2015, 02:59 PM
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Was their much black debris in the lower housing when you pulled the cover off? You may need a new drive belt, it could be slipping.




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post #4 of 22 Old 02-01-2015, 05:04 PM Thread Starter
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Quote:
Originally Posted by Shryp View Post
Sounds like the adjustment is not tight enough or some bearings are worn out. It could also be getting wet with snow or oil dripping in there.
I was going to make the adjustment tighter, but feared that this would put too much travel/tension on the springs. I thought the same thing about oil, but the wheel didn't seem to be oily.
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post #5 of 22 Old 02-01-2015, 05:10 PM Thread Starter
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Originally Posted by Motor City View Post
Was their much black debris in the lower housing when you pulled the cover off? You may need a new drive belt, it could be slipping.
The cover did had a black residue/buildup on it that seemed to be more fibrous than greasy.

Is there a way to confirm that the belt may be slipping or should I just replace it?
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post #6 of 22 Old 02-01-2015, 05:14 PM
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Just drive it around with the belt cover off. Tip it up in the air with the bottom cover off and check all the parts of the drive system for a large amount of movement in them as that would indicate worn bearings which might be part of your issue.

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post #7 of 22 Old 02-01-2015, 06:05 PM Thread Starter
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Quote:
Originally Posted by Shryp View Post
Just drive it around with the belt cover off. Tip it up in the air with the bottom cover off and check all the parts of the drive system for a large amount of movement in them as that would indicate worn bearings which might be part of your issue.
Yeahhh... So I took the belt cover off to have a peek as you said and it looks like not only do the belts need to be replaced, but someone hacked the idler assembly onto the block and it's sitting at some crazy angle.

Definitely going to be more involved than I thought!
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post #8 of 22 Old 02-01-2015, 06:17 PM
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A lot of them mount to the block like that. Maybe your bolt just came loose. See what happens if you tighten it up.

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post #9 of 22 Old 02-01-2015, 06:18 PM
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I would say that might be a problem.

How much rubber is left on the friction wheel?
They do wear out.

I hate shoveling SNOW!
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***********************
Craftsman #536886141(Around 2000?)
5 Horse, Tecumseh HSSK50-67392S
22" Dual Stage
***********************
"Classic" 1963 S-226 Snowbird
4 Horse (orig) Briggs & Stratton#6305201
22" Dual Stage
***********************
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post #10 of 22 Old 02-01-2015, 06:19 PM
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Quote:
Originally Posted by Shryp View Post
A lot of them mount to the block like that. Maybe your bolt just came loose. See what happens if you tighten it up.
That is normal?

I am glad mine is not like that.

I hate shoveling SNOW!
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***********************
Craftsman #536886141(Around 2000?)
5 Horse, Tecumseh HSSK50-67392S
22" Dual Stage
***********************
"Classic" 1963 S-226 Snowbird
4 Horse (orig) Briggs & Stratton#6305201
22" Dual Stage
***********************
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