Siezed 5hp 22" with snow on the way - Snowblower Forum : Snow Blower Forums
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post #1 of 21 Old 03-20-2016, 06:46 PM Thread Starter
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Siezed 5hp 22" with snow on the way

A family member recently gave us a 22" 5.0 (Tecumseh) Craftsman snowblower. It came to us in excellent (visual) but unknown mechanical condition. I had changed the oil in it a few times but ran out of 30wt and never got around to filling it up. As per my usual, I taped the key to the top of the oil cap and wrote in giant caps marker "NO OIL".

My kid started the snow machine this afternoon to make sure it was working properly before the upcoming snow storm, etc. I'm on my way home (was travelling for work) and all that I know is that he can't pull the crank and that the electric starter does not work.

I've had a bunch of race cars over the years and I've blown up more motors than I can remember. Are these things easy to (quickly) tear down and rebuild or am I talking about a multi-day project more than a few hours?

Is this something that I can hone/clena up the bore lightly with an emery cloth and get it through the storm or am I talking rod & crank bearings more than rings (or all of the above)?

Thanks.
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post #2 of 21 Old 03-20-2016, 07:46 PM
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How did it last come to a stop ?

If your Son had it running, while waiting for the SnowStorm, and it seized up . . . . I'd reckon that he wiped part of the aluminium Piston Rod onto the Crank Shaft.

You'll only know after you take it apart.
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post #3 of 21 Old 03-20-2016, 08:15 PM Thread Starter
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No idea. He said he had it running and it stopped running. There is gas in it and there was no oil. Wondering if this is going to be a ring issue or rod issue or both. Also how long to tear these things apart? (I have a full shop)
Thx for reply.
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post #4 of 21 Old 03-20-2016, 08:48 PM
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jmo, but if its single shaft ( no pto) engine, a harbor freight predator for $99 could be installed in less than an hour usually. and those do come with no oil also.

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post #5 of 21 Old 03-20-2016, 09:04 PM
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take a breaker bar and pull off the recoil, give it a good tug and you might break it free. if you do break it free, add some 5w30 and hope it doesnt chuck the rod

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post #6 of 21 Old 03-20-2016, 10:07 PM
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You're not going to know what's damaged until you open the engine and see. Probably pull the head off first, and see if cylinder bore is toast. Probably need a breaker bar to turn it because the law of Murphy says the piston will be at the top. If the bore is toast, then it's not a 2 hour rebuild. If the cylinder is good, you will need to round up all the other bits like rings, connecting rod, probably bearings/bushings and seals. If all the parts are available from stock, maybe your're in business.

Best check if it will take a predator engine as that will probably cost less than all the bits and pieces plus the time to rebuild.

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post #7 of 21 Old 03-20-2016, 10:55 PM
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Post the model number. A Predator swap would probably be the easyiest.




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post #8 of 21 Old 03-21-2016, 02:56 AM Thread Starter
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It's a 247.88700
It is definitely seized. I'll pull the head tomorrow as well as the manual starter and see what I can sort out with a breaker bar. Will a $99 HF motor be a direct fit?
Thanks.
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post #9 of 21 Old 03-21-2016, 06:57 AM
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Looks like you left off a digit on the model, is it 247.887000 or 247.887001? If so, it looks to have a single shaft motor on it (which is good for a motor transplant). It's likely it will fit but you'll likely have a little work to do, depending on some things.

If the bolt pattern on the base and the base thickness is the same, if it doesn't interfere with the chute controls and the length and height of the main crankshaft are the same between the old motor and a Preditor then it would be a direct bolt in. If any of that differs then you'd have some modifications to do. How much depends on how much and many things differ. Best guess, longer mounting bolts and having to modify something on the auger controls at a minimum.

If rebuilding isn't an option, then another might be find a scrap/parts machine with a good engine on it and swap it out.

Good luck

Paul
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post #10 of 21 Old 03-21-2016, 09:28 AM
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Yeah , that's pretty much where your at. Those are not hard to come by used fairly cheap, but pull it apart and see what you have first.




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