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Reload this Page Cub Cadet SLT1054 engine stalls when left off hydrostatic
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Old 07-16-2013, 11:31 AM
Cub1054 Cub1054 is offline
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Default Cub Cadet SLT1054 engine stalls when left off hydrostatic
The engine starts fine. Using the throttle I can rev it up & down with out any issues. When I go to drive (without PTO engaged) then let up on foot pedal the engine backfire & stalls. I checked the flywheel key (replaced it). Any thoughts? Thx
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Old 07-16-2013, 07:23 PM
J-Mech J-Mech is offline
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The engine starts fine. Using the throttle I can rev it up & down with out any issues. When I go to drive (without PTO engaged) then let up on foot pedal the engine backfire & stalls. I checked the flywheel key (replaced it). Any thoughts? Thx
First off,

So, when you PUSH on the pedal, it starts to move, no issues.... but when you let off it, and the load comes off the engine, it backfires and dies. Is that correct? Just when your easy on it? Or can you take it out in the street running, stomp the hydro wide open, take off down the road, but when you let off the hydro, it backfires?

What I want to know, is does it handle a load? Or just has trouble coming off the load.......
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Old 07-16-2013, 07:49 PM
Cub1054 Cub1054 is offline
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It seems only coming off load either fast or slow
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Old 07-16-2013, 07:51 PM
Cub1054 Cub1054 is offline
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Also when engine is running/moving should I read over 14 volts on battery? hooked up meter to watch and that is what I saw
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Old 07-16-2013, 08:10 PM
J-Mech J-Mech is offline
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It seems only coming off load either fast or slow
Going to verify one more time. It has no problem running under LOAD? As long as you don't try to slow down, it is fine?

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Originally Posted by Cub1054 View Post
Also when engine is running/moving should I read over 14 volts on battery? hooked up meter to watch and that is what I saw
Yes, as long as it's not over 14.6 Volts, your fine.
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Old 07-16-2013, 09:18 PM
Cub1054 Cub1054 is offline
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I just went out and drove it and when I drove it at max speed for a while did not act up and when I let off the pedal it backfires and stalls. I also noticed after I retarted & drove full pedal for awhile it did act up (as it was hot!??) and it did start to backfire when I was driving it. I turned off because it kept backfiring and did not want to damage it.
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Old 07-16-2013, 09:29 PM
J-Mech J-Mech is offline
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Ok..... this problem sounds fun.

First: According to the parts book, there is like 6 different SLT1054's. 2009, 2010, 2011... Do you know what yours is? If not, could you please post the model # off the tag along with the serial number. A good pic of the tag is fine.

Second: Save me the time and tell me what motor you have so I don't have to look it up please.

Third: Do all the safety switches function as they should?

Fourth: Have you done ANYTHING AT ALL to the tractor lately? I.E. changed the oil, took the deck off, tune up? ( I know you mentioned you checked/ changed the flywheel key)

Preliminary thoughts are you are having an electrical issue with a safety switch. But we will get there, it may just take a few posts. Start by answering what I already asked and we'll go from there.
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Old 07-17-2013, 06:17 AM
Cub1054 Cub1054 is offline
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First...sorry I had a "brain fart"....It is a slt1554 Manufact. year is 2005.
Kohler 27hp
Spec#: CV740-0025
Model: CV740S
S/N 3513210931
Family:5KHXS-7252GC

I haven't done anything to it. I noticed last time I used it that it seemed to run rough (no backfiring tho). Yes I replaced key as I had read on a forum that it could be that. BTW...THANK YOU for all your help!!! Appreciate it
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Old 07-17-2013, 06:44 PM
Cub1054 Cub1054 is offline
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Ok so it seems worse in that it backfires much more & when I just went out there & tried to start so I could move it to work on it wouldn't stay running unless I had the break pedal on. Not sure if/where a switch is within break system does anybody??
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Old 07-17-2013, 10:48 PM
J-Mech J-Mech is offline
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Ok so it seems worse in that it backfires much more & when I just went out there & tried to start so I could move it to work on it wouldn't stay running unless I had the break pedal on. Not sure if/where a switch is within break system does anybody??
And..... there it is. Thought it sounded like a switch problem. I've been thinking about this for a while... how I could walk you through it...

Here's what I came up with:
On the side of the motor where the carb is, there is a plate with the throttle and choke linkage on it. There, you should find a wire. This is the kill wire for the magneto. Start the motor, disconnect that wire. (You can disconnect it first, it doesn't matter.) Now the motor WILL NOT shut off with the key, or any other safety switch until you hook it back up. Go drive the mower and see if your problem goes away. If so, it is DEFINETLY a problem with either the safety switch system, or a short to ground in that circuit.

Come back and let me know what happens, and we'll go from there.
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