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Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 26765
Experience:  have worked on and around most engine models for 35 yrs./Polaris ATV expert
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I have a model 1515 Cub Cadet. It will not start. No power

Customer Question

I have a model 1515 Cub Cadet. It will not start. No power to spade wire at solenoid. I tested the brake switch. It works in both modes normally open and and normally closed according to the diagram. I suspect the pto switch, but can't figure out how to test it.
Submitted: 4 months ago.
Category: Small Engine
Expert:  Bill McCusker replied 4 months ago.

Hello welcome to Just Answers My name is***** try to Solve this together. Is it electronic pto or manual?

Customer: replied 4 months ago.
It is electrical (switch on console.)
Expert:  Bill McCusker replied 4 months ago.

are you using a volt meter?

Customer: replied 4 months ago.
a test light.
Expert:  Bill McCusker replied 4 months ago.

ok.. So the best way is to just replace it.. But i would check the seat switch 1st. the pto switch is hard to jump its easy to just replace it..

Expert:  Bill McCusker replied 4 months ago.

the key switch is that new or good?

Customer: replied 4 months ago.
Nothing personal here, but I am trying to make a correct diagnosis. Anyone can just replace parts. Thank you.
Expert:  Bill McCusker replied 4 months ago.

I understand.. but this is why i asked if the key switch is good?

Expert:  Bill McCusker replied 4 months ago.

How many spades does the pto switch have?

Customer: replied 4 months ago.
By your questions of late, it is clear to me that you don't have a wiring diagram. If you did you wouldn't ask how many terminals are on the various switches, you would know.Please forward my thread to another tech.
Thank you
Expert:  Bill McCusker replied 4 months ago.

I will share with you what i have for a wire diagram provided by the model number you have given.

http://www.m-and-d.com/pdfs/MTD/1515_1517.pdf

Its not a really good electrical diagram.

I will opt out.. Good luck

Expert:  Curtis B. replied 4 months ago.

Power for the spade terminal on the solenoid comes from the keyswitch. Do you have power to the keyswitch end of the wire? If not, then .yes , you have a safety switch, not completing the ground side of the circuit. If you do have battery voltage, at the key switch end, the wire from key to solenoid is damaged . You do have power to the key from the fused wire?

Customer: replied 4 months ago.
I was able to get a diagram. The power on this model comes via a orange wire at pto to solenoid. I ordered a pto switch.
Expert:  Curtis B. replied 4 months ago.

oK> Let's see how that works!

Customer: replied 4 months ago.
Ok I'll let you know
Expert:  Curtis B. replied 4 months ago.

Thanks! On later models, the power never goes through the safety switches, just completes the ground.

Customer: replied 4 months ago.
are you saying that the orange w/white stripe going to the solenoid ia really a ground wire? Confused.
Expert:  Curtis B. replied 4 months ago.

Solenoid has two small wires? Or just one? two small wires, one has to be ground, one small wire, the solenoid has to be grounded.

Expert:  Curtis B. replied 4 months ago.

Can you attach schematic?

Customer: replied 4 months ago.
Just one.
Expert:  Curtis B. replied 4 months ago.

So it has to come from key, through pto switch? And the solenoid body has to be grounded to the frame.

Customer: replied 4 months ago.
On this one the power goes through the brake switch to pto switch and then to solenoid.
Customer: replied 4 months ago.
If you can pull up the diagram, you will see. it.
Expert:  Curtis B. replied 4 months ago.

I don't see any diagram that is helpful. I thought you had found one.

Customer: replied 4 months ago.
I do have it. I'm trying to convert the contents.
Expert:  Curtis B. replied 4 months ago.

OK>

Customer: replied 4 months ago.
If you will give me your email address, I will send a copy to you.
Expert:  Curtis B. replied 4 months ago.

There is an attaching link on the customer end typing bar. On my end it is a tree or paperclip icon.

Customer: replied 4 months ago.
IS THAT ON THE EMAIL, OR THE RESPONSE PAGE? i DON'T SEE IT.
Expert:  Curtis B. replied 4 months ago.

response page

Customer: replied 4 months ago.
I don't see it. Can you cut and paste it on your reply?
Expert:  Curtis B. replied 4 months ago.

Getting files from customers

1. To the left of the Send button, customers will see an "+ Add Files" link. Customers will click on that link and select file(s) that they'd like to share with you.

2. After the selected file has fully uploaded, the uploaded file will be shown below the message box. Customers can add multiple files at once.

Customer: replied 4 months ago.
I tried that already. Their software cannot open the file.
Expert:  Curtis B. replied 4 months ago.

Where did you find schematic, maybe I can access it.

Customer: replied 4 months ago.
http://service.mtdproducts.com/Training_Education/769-02100/769-02100.pdf
Expert:  Curtis B. replied 4 months ago.

Page 86?

Customer: replied 4 months ago.
Diagrams are on 83 and 84.
Expert:  Curtis B. replied 4 months ago.

Orange and black,, through the moiniter. Is there voltage from the B , terminal on keyswitch when held in start, the orange wire.

Customer: replied 4 months ago.
No
Expert:  Curtis B. replied 4 months ago.

B -S and A1 on keyswitch have to be energized for start. PTO switch will not do it.

Customer: replied 4 months ago.
the ign switch is bad?
Expert:  Curtis B. replied 4 months ago.

I don't know, volt/ohm meter could determine that, check the three terminals on keyswitch.

Customer: replied 4 months ago.
there should be continuity between the 3 terminals in start?
Expert:  Curtis B. replied 4 months ago.

Yes

Customer: replied 4 months ago.
It was difficult to test on the tractor
So I pulled it off for a bench test
I am getting continuity on each of the three terms b s a1
Expert:  Curtis B. replied 4 months ago.

Then it checks good. B would have battery voltage from the fused wire from solenoid. S is the orange wire to the switch terminal on the starter solenoid, (orange,white)and the A 1 is accessory power to the alternator and fuel solenoid. Is there 12 volts to the B terminal when in dash?

Customer: replied 4 months ago.
2.66V at B terminal in #2 pos. and in start.
Expert:  Curtis B. replied 4 months ago.

B should be 12 volts! Trace back and see why it is too low!

Expert:  Curtis B. replied 4 months ago.

comes direct from the positive side of the starter solenoid.

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