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D17 - Starting Issues

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Jake Wenger

09-02-2013 09:20:15

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I have a D17 tractor that I am having trouble starting. When I turn the key the starter works fine and the engine starts. As soon as I let the key toggle back the engine dies. If I continue to engage the starter by holding the key to the right, after the engine fires, up it continues to run. I have adjusted both the choke and throttle levers with no difference.

Any suggestions?


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John T

09-03-2013 03:56:01

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 Re: D17 - Starting Issues in reply to Jake Wenger, 09-02-2013 09:20:15  
My D 15 did that, a new switch cured the problem. When in the ON or Start positions it must be supplying hot battery volltage to the coil or else no spark. Put a test lamp on the coils input and its easy to see if voltage is present or not as it must be in ON or Start positions.

John T

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09-03-2013 03:34:27

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 Re: D17 - Starting Issues in reply to Jake Wenger, 09-02-2013 09:20:15  
I would agree with the bad key switch. Specially if you have a big ring of keys on the tractor key, puts side pressure on the key, wears out the key, and switch, internally.

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09-02-2013 11:34:46

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 Re: D17 - Starting Issues in reply to Jake Wenger, 09-02-2013 09:20:15  
+1. Your problem is likely either the ballast resistor or the ignition switch. Some careful tracing/hotwiring will tell you exactly which component needs replaced.

Reasoning: Tractors with ballast resistors typically bypass the resistor circuit for better initial starting in the Start position of the switch and then return to the ballast circuit when switch is returned to the run position with the main switch. If your tractor is not equipped with a ballast resistor then likely the main switch.

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09-02-2013 10:46:13

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 Re: D17 - Starting Issues in reply to Jake Wenger, 09-02-2013 09:20:15  
Tell us what you have done or did this just start happening???? What series is it?? That said does it have a ballast resister in the system and maybe a switch by pass and the resister maybe bad. Or you may have a simple bad ignition switch. Try hot wiring it and if it stays running the problem is from the coil back to the battery. Then if you find it is from the coil back and you have a ballast resister jumper across it and see what happens etc

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09-02-2013 10:00:18

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 Re: D17 - Starting Issues in reply to Jake Wenger, 09-02-2013 09:20:15  
Choke and throttle levers have nothing to do with the issue. You"re losing current to the coil when backing off the key. Replace the key switch. It"s not providing current to the coil in the "on" position, but is during "Start".

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