MTD No start

[davbell22602]

MTD 690 hydro 18hp Lhead twin Briggs

All sudden engine spins with new battery from lowes than it wont spin at all. I have contunity at the blade and clutch switch both open and close. Tried 3 new key switches(MTD 925-0267). With one lead on the pos battery and the other on "S" terminal I no voltage with or without turning the key. I have 12v at the "G" terminal on switch all the time. I did notice that the ground from the neg terminal on battery is using one of solonoids mounting bolts. I can jump starter from solonoid and at the starter. I'm getting 12v at one of the seat switches terminals.

 

[twinfords]

Soleniod is bad

 

[davbell22602]

Soleniod is bad

Even though I can jump the starter at the solonoid?

 

[Carscw]

To test it take a wire hook one end to the battery on the + side and touch the other end to the small post on the solenoid if it works then you are not getting power to it

Sent from my iPhone using LMF

 

[davbell22602]

To test it take a wire hook one end to the battery on the + side and touch the other end to the small post on the solenoid if it works then you are not getting power to it

Sent from my iPhone using LMF

It works doing that test with a wire.

 

[Carscw]

Then it is good. So next check if a fuse is bad or maybe a broke wire or bad safety switch. When it starts does every thing else work. Can you drive and engage the blades. First two I look at is seat and brake Switch

Sent from my iPhone using LMF

 

[davbell22602]

Then it is good. So next check if a fuse is bad or maybe a broke wire or bad safety switch. When it starts does every thing else work. Can you drive and engage the blades. First two I look at is seat and brake Switch

Sent from my iPhone using LMF

I got to spin to on its own when jumpered both the clutch pedal and blade switch with a wire. Both switched have the 2 orange ignition wires. Then when I tried I got nothing. Fuse is good. I have 12v at the seat switch. Havent tried the drive or blades yet. I currently have the hydro bypassed for roll mode.

 

[Carscw]

Ok how about hook every switch back up like it should be and unplug one at a time and or jump it and sit in the seat

Sent from my iPhone using LMF

 

[davbell22602]

Ok, I found the problem. The engine will turn everytime when I have blade safety switch jumpered. Getting a new safety switch for the blades.

 

[Carscw]

Good job it's always best to test one at a time

Sent from my iPhone using LMF