John Deere SX75 will not run ,, PLease help !!

jeff927June 29, 2008

I have a 1988 John Deere SX75 with a Kawasaki 9 hp engine ! It would not start it cranks fine , but had no spark ! I replaced the coil , the spark plug , both with no effect , then I replaced the igniter & it started and ran for 20 minutes , then quit , it would only run in neutral for some reason , (which I think that is what the actual problem is !! The ignition curcuit is always grounded ! I have tried removing the ignition switch and running jumper wires to power the mower and then crank it , but something is keeping the ignition wire grounded !!

I will appreciated any guidance or help any one has to offer ! I worked as a mechanic for 25 years , but this machine is kicking my tush !!

Thank you ,

Jeff

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bill_kapaun

Have you pulled the shroud off the engine to make sure the wire isn't grounded there? (mice)

    Bookmark   June 30, 2008 at 2:55PM
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jeff927

Yes I have done that and replaced the coil actually !! The wire runing to the igniter shows grounded & I am wondering if it should ?? I have removed the key switch from the circuit and hard wired around it with jumpers , no effect !! Could it have eaten an igniter so fast ??
Thank you ,

    Bookmark   June 30, 2008 at 8:48PM
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bill_kapaun

Maybe this link will help?
http://www.lawnsite.com/showthread.php?t=228748

    Bookmark   June 30, 2008 at 9:27PM
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jeff927

The old one tested bad and I will test the new one later today ! I am going to unplug the wire running from the igniter to the ignition @ the engine (& leave it connected to the coil and see if it rus in that configuration) I am very suspicious that the pto switch is grounded out , something is grounding the igniter , I have eliminated the seat switch from the circuit , isolated the ignition switch , In looking at the wiring diagram I am ver suspicious of a bad pto switch !! It seems to be the only thing that could be providing a constant ground .
EEEEEEEEE this machine is making me crazy !!
Thank you and I will continue the battle ,
Jeff

    Bookmark   July 1, 2008 at 12:02PM
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jeff927

I bought an aftermarket igniter and the mower runs great now !! The new one from ((http://www.rcpw.com/aftermarket/440465.asp )) cost $20.00 & works fine !! (NOTE , I did buy the John Deere one for $63.00 & it lasted exactly 20 minutes before expiring ) I mounted the new one by the run relay under the seat , by the battery (it comes with the necessary wiring) !!
That John Deere has turned to junk aftermarket parts is sad , but true !! Wonder why they don't go for the aftermarket parts that are actually good and work ??
If anyone needs info , I did break down and buy the shop manual for this unit & will be glad to email the section to anyone with problems with sx , rx 70 or 90 series issues !!
thanks , jeff

Here is a link that might be useful: Kaw Igniter

    Bookmark   August 21, 2008 at 11:16AM
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rustyj14(W/PA)

In the Tri-county area around Pittsburg, Pa, John Deere has closewd all of the little dealers, and now, if we need parts, we must drive 35 miles, or more, to one of the new JD shops, way out in the country!
I guess some college educated nit-wit made a study of things, and decided that JD is farm tractors and equipment, and to heck with lawn mower owners!

    Bookmark   August 22, 2008 at 8:15PM
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steve70

I purchase a 1988 SX75, and I think I'm having the same problem you did. It only runs in neutral. When you put it in gear, it stops running. I saw your reference to a website listing part #440465 ignition module. I assume this is what fixed your problem? Would you also be willing to share the wiring diagram from the manual?
I appreciate any help you can give me.
Thank you.

    Bookmark   February 24, 2009 at 1:14PM
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culvers21

I am having the same trouble with my sx75 and am planning on getting a new igniter. The only thing is the igniter you have listed here is not the same as the one i have. Mine only has one wire outlet and your has two. Also i noticed on the the stens website it is for non batery operated machines. Does this mean its a pull start tractor. Just wondering where i can get an aftermarket igniter for my john deere sx75 that only has one wire jack coming out of it instead of two. Maybe it doesn't matter. Any help would be appreciated.
Thank you!

andycypher@hotmail.com

    Bookmark   July 22, 2009 at 3:08PM
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page-2009

I purchase a 1988 SX75, and I think I'm having the same problem you did. It only runs in neutral. When you put it in gear, it stops running. I saw your reference to a website listing part #440465 ignition module. I assume this is what fixed your problem? Would you also be willing to share the wiring diagram from the manual?
I appreciate any help you can give me.
Thank you. rpagerie@aol.com

    Bookmark   July 24, 2009 at 7:30AM
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tomplum

Page- yours sounds like a defective seat switch to me.

    Bookmark   July 24, 2009 at 11:44AM
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