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  #1  
Old 03-14-2007, 01:28 PM
anvil anvil is offline
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Location: Lakeland, FL
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Sears Craftsman Lawn Tractor Stator Problem. Please Help.

In my quest to fix an electrical problem that I am
currently having with my mower, I posted outlining
my problem last week and was answered by a couple
of very helpful individuals.

I still however have been unable to arrive at the cause.

The point that I am now at is with the stator.

As I'm sure you know, the stator has 18 poles.

If you are standing over the stator, looking down, with the two
unwound poles at the 12 o'clock position, the first five poles
(clockwise) get hot when the key is turned to the right in either
of the two positions before start.

The remaining poles remain cool.

The wires that I repaired also begin to heat up.

Would this indicate a bad stator or a problem else where?

I would greatly appreciate it if anyone could take a moment
to get up to speed with my dilemma at

http://www.lawnsite.com/showthread.php?t=177607

Please feel free to provide any suggestions that you feel
would apply.

Any further insight is greatly appreciated.

Mark
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  #2  
Old 03-15-2007, 10:05 PM
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Restrorob Restrorob is offline
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Sorry Mark, Didn't mean to leave you hanging got called out of town.

Post me the model number off the white label (maybe under the seat) off the tractor. I would like to pull up the wire diagram.
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  #3  
Old 03-16-2007, 01:45 AM
anvil anvil is offline
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Sears Craftsman Lawn Tractor Stator Problem. Please Help.

Hi Restrorob,

No problem. I'm just happy to have a couple of guys
willing to take the time to help out with my problem.

I was downsized out of my job last year and am trying
to keep from the expense of hauling the thing to the
local repair shop.

I went to the parts dept at the local Sears to try to gain
more insight into the yellow and black wires from the
harness that tie in with the black wire from the stator
in a “Y” configuration (the location where I attempted
to solder it back together) but was not able to find out
anything.

From what I have read, there may be an inline diode
where the wire came loose and it should not be resoldered
without replacing the diode but I am not sure if that applies
to my mower.

There appears to be a tiny piece (1/8 inch) of hard wire at
the “Y” but the yellow wire came loose just before it.

Also, I tried a continuity check between all of the stator leads
(lead to lead) and all of them read 0.3 - 0.5

Ok, the Craftsman M.N. is: 917.259556

Thanks Again for the help.

Mark
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Old 03-16-2007, 10:32 PM
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Restrorob Restrorob is offline
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OK Mark, The place you repaired the wires; Was it on a short pigtail going between the main tractor harness and the stator as below or between the stator and the plug connector ?




I really don't believe all three wires should be tied together as seen in the engine wire diagram I posted before. The hard wire you speak of is what's left of the diode. The diode is supposed to let voltage run in one direction only so not to back-feed voltage to the stator, Which is probably why the stator and wires are heating up when you turn the key on.
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  #5  
Old 03-18-2007, 10:22 PM
anvil anvil is offline
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Sears Craftsman Lawn Tractor Stator Problem. Please Help.

Restrorob,

Sorry for the delay, but I wanted to take a picture of the wiring
to hopefully help you gain more insight into what was what.

The BLACK wire (just above the GREEN one in the pic) goes to the
stator. he end pictured is supposed to be attached to the end
of what appears to be the small piece of hard wire that I
previously referred to on the end of the YELLOW wire.

For some reason, the picture looks considerably darker in the
attachment than the actual photo. Please let me know if you
need for me to try to lighten it up a bit.

Thanks Again for your time.

Mark
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  #6  
Old 03-19-2007, 12:29 PM
thecrankshaft thecrankshaft is offline
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Location: Plymouth, WI
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Your stator has three wires coming off of it:

Black - 12 volt, 3 amp DC charging wire that should be connected to battery positive

Yellow - 70 watt AC voltage accessory wire for lighting

Green - stator brake

That should help you figure this out. Get it wired correctly and I think your overheating problems should end if the stator is ruined.
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  #7  
Old 03-19-2007, 09:43 PM
anvil anvil is offline
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Sears Craftsman Lawn Tractor Stator Problem. Please Help.

Thank You for your reply Crankshaft.

The problem is that the first five poles on the stator started over
heating AFTER the initial repair (in the photo) was made.

The BLACK wire that leads to the stator has since come loose
and needs to be resoldered.

I'm wondering if doing so will be sufficient or if I should also go
ahead and replace the stator.

Thanks Again for the help.

Mark
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  #8  
Old 03-19-2007, 10:43 PM
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Restrorob Restrorob is offline
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Remember this;

Quote:
Originally Posted by Restrorob View Post
. The hard wire you speak of is what's left of the diode. The diode is supposed to let voltage run in one direction only so not to back-feed voltage to the stator, Which is probably why the stator and wires are heating up when you turn the key on.
Remember this;



You notice in the diagram none of the three stator wires should be connected to each other.

You have two choices, Buy a new stator and be done with it (which I see the plug connector in your pic.) or install a new diode and hope the stator is not burned up or shorted out.

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some times the man in my mirror isn't so smart...
"Why go out preserved when you can go out beat up, worn out, sliding in sideways screaming, Holy Sh!t What A Ride" !!!
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  #9  
Old 03-20-2007, 11:07 AM
thecrankshaft thecrankshaft is offline
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Location: Plymouth, WI
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Listen to Rob - I forgot about that diode in there. The stator actually produces AC voltage, but DC is needed for charging, that is why the diode is there. It may be causing the problems of overheating like stated.

Diode 2575531-S List $9
Stator 1208508-S List $40

Get those wires off of each other!
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  #10  
Old 03-20-2007, 11:09 AM
thecrankshaft thecrankshaft is offline
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Quote:
Originally Posted by thecrankshaft View Post
Get it wired correctly and I think your overheating problems should end if the stator isn't ruined.
Why can't I edit my post?
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