Cub Cadet SC900 Self Propelled no start

[Rivets]

Is it possible you can take a picture of the backside of that kill switch, plastic area where the bolt/nut are and electrical connection?

 

[Oddjob]

My thoughts as well...my confusion is more about the kill switch operation



I agree....i just want to rule out the kill switch.
I'm completely confused on this kill switch design, and how this actually works based on what I'm seeing during the safety lever activated and the safety lever released (plz see my attached pics)

Hard to tell from the pics, but I think you are saying that the long lever hits the short stub to ground the coil when the blade brake engages the flywheel, and also hits the metal backing of the brake when the blade brake is disengaged. I noticed a screw on the fitting for the long lever. Can you loosen that screw and move the lever arm a little counterclockwise so it misses the brake backing?

 

[Rivets]

The reason I’d like to see the backside, I’m wonder if the lever should be opening the circuit in one direction and closing it in the other direction.

 

[jb2873]

I'll take additional pictures tomorrow morning. I greatly appreciate everyone's help & input thus far.

 

[MowerNick]

It may be a microswitch. If so the tab would be pushed down when starting. I would check that your auto choke system is working correctly

 

[jb2873]

It may be a microswitch. If so the tab would be pushed down when starting. I would check that your auto choke system is working correctly

This is definitely not a microswitch....there is no switch persa, just a metal tab screwed to the block where the coil wire attaches. It's basically a grounding circuit I assume, that kills the coil when activated.

 

[jb2873]

 

[jb2873]

Some more pictures. See how it touches when safety is engaged & when not engaged. Not a microswitch as you can see in pic ( I initially thought it was a microswitch but there's no switch to this, just a screwed in metal tab).
I wrapped some tape around the end of the metal tab to insulate it from touching when I engaged safety and still won't start.
I'm assuming the coil setup is faulty....BUT.... I still can't figure out this kill switch setup... I ordered another coil module and I will see what happens...

 

[Rivets]

That’s why I want to see the other side of the switch. Looks to me like the plastic block needs to be rotated counterclockwise when the lever is in the run position. This will not allow contact with the back of the brake pad.

 

[MowerNick]

Yes the top view was a better pic. I just assumed because it looked similar to the old toro microswitches. I will try looking it back up and see whats going on