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Old 07-05-2017, 07:55 AM   #1
4x4dually
 
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Exclamation Need assistance. Mustang MTL16 Fuel Stop Motor.

Fighting an issue with my buddy's Mustang MTL16 with a Yanmar in it.

He called and wanted my help. It would crank but wouldn't fire. I told him it sounded like the fuel stop solenoid was bad. Come to find out, it is a stop "motor" not a plunger type solenoid that goes flump flump. It actually rotates back and forth. Apparently it has a fuel stop relay and a timer.

I can't for the life of me find any diagrams on the interwebz on how this Asian some-buck is wired. I actually took two wires from the battery and got the motor to drive one direction and it fired right up. Then we had to pull a fuel line and let it starve after 35 minutes to get it to stop. I can't make the motor go the other direction.

Anyone have experience, knowledge, or diagrams? I'm googlin' everything I can think of.

Thanks in advance.
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Old 07-05-2017, 08:00 AM   #2
06 DIESEL
 
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Guys at work just had a similar thing happen to their bobcat skid steer, to start it they have to jump the starter and to stop it they stall the machine. It will not start with the key because it is showing a code for a bad relay.
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Old 07-05-2017, 08:02 AM   #3
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Guys at work just had a similar thing happen to their bobcat skid steer, to start it they have to jump the starter and to stop it they stall the machine. It will not start with the key because it is showing a code for a bad relay.
It's the same as a fuel solenoid on a 12V...but it rotates so it has to be driven one direction to enable fuel then driven the other direction in order to stop fuel. Never seen one before. I'm trying to find a diagram so I can start probing on it.

Needs replaced with a cable from the cab.
 
Old 07-05-2017, 08:23 AM   #4
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My John Deere 935 & 915 lawn mower with the 3 cylinder yanmar engines has the same deal as the 12v. They tend to stick some times and you have to move them by hand.
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Old 07-05-2017, 08:26 AM   #5
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My John Deere 935 & 915 lawn mower with the 3 cylinder yanmar engines has the same deal as the 12v. They tend to stick some times and you have to move them by hand.
This one is a little motor that rotates and the lever mounted on the end of the motor shaft is what pulls and pushes the fuel stop lever back and forth. I couldn't move it with my hand or a prybar.
 
Old 07-05-2017, 08:54 AM   #6
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This one is a little motor that rotates and the lever mounted on the end of the motor shaft is what pulls and pushes the fuel stop lever back and forth. I couldn't move it with my hand or a prybar.
Oh now I understand. I've not seen one of those before. I agree a pull cable to the cab is the way to go
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Last edited by DISTURBED; 07-05-2017 at 08:56 AM.
 
Old 07-05-2017, 09:04 AM   #7
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Could you make a push/pull cable?
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Old 07-05-2017, 09:22 AM   #8
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Oh now I understand. I've not seen one of those before. I agree a pull cable to the cab is the way to go
I'm not the most versed in mechanical injected diesels....but it was a new one for me. Why the hell would anyone relay on a motor to stop a motor? Stupid design.

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Could you make a push/pull cable?
Yes. Probably the best choice function and budget wise.
 
Old 07-05-2017, 11:53 AM   #9
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Does anyone have access to parts/diagrams for a Yanmar 4TNE98-tbl motor?

I'm googlin' now.....I can't find a fuel shutoff that is a motor and not a solenoid.
 
Old 07-05-2017, 12:44 PM   #10
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does it look like this one? hard to see what you are working with to help...

Aliexpress.com : Buy Yanmar 4TNE94 4TNE98 Fuel shut off solenoid 119807 77800 SA3840T 1753ES 12A3UC5B1S1 from Reliable solenoid valve for steam suppliers on China Supplier Store



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Old 07-05-2017, 12:49 PM   #11
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does it look like this one? hard to see what you are working with to help...
Nope. It is not a push-pull type. It is motor type. When activated, it rotates one direction to enable fuel, then rotates back the other direction to disable fuel. It's retarded.
 
Old 07-05-2017, 05:00 PM   #12
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sounds like it.
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Old 07-05-2017, 08:17 PM   #13
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Had a Isuzu in a excavator with the same deal, called a step motor. It went bad and was frieght fully expensive ran a cable and it was fixed.
 
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