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Wow thanks for all that info! Yes, space cadet is a nice way to describe her.... I'll be visiting them bright & early Tuesday morning to get this all straightened out. I'll report back once I have the correct part in hand. Thanks !

LOL well I assumed since I gave them the serial number, as well as an overall pic of the sc900 mower, the Cubcadet dealer would know exactly what the h*ll part to give me. You know what they say when you assume............I thought maybe the coil was a crossover part. Come Monday morning, I'll...

I have...I even had to build my own kill wire when installing the new coil (the new coil was a briggs part from cubcadet and it didn't come with a preattached kill wire). I checked continuity of my new homemade wire and the end connectors, and all is good. I'm wondering if cubcadet gave me the...

I lined up the flywheel magnet with the new coil and set airgap at .008 The coil I received from Cubcadet looks slightly different and it's a briggs part. Can a briggs coil cross over to a Cubcadet sc900 motor? Maybe that's the problem? If it won't cross over, then someone at the parts counter...

I tried that...still nothing. Put a new coil on and still nothing. Wondering if new coil is faulty.

I think I've tried just about everything to get this to start. It ran like a champ originally, then after a few mowings, it would get harder to start, until eventually it just wouldn't, no matter how many attempts. Weird how each time leading up to this no start situation, it would take maybe...

I tried that early on...still, no spark / no run.

I rotated the flywheel to the magnet points then used a feeler gauge to set gap. I think that's how it should be......?

Okay I readjusted the coil for the magnetic pick ups. I put them at the minimal clearance in the instructions that were giving above. I'm still not getting anything.

Okay I flipped the coil over and set a basic Gap. I had to make a longer wire for the kill switch. Still no spark. I disconnected the kill switch and attempted to start and still nothing. The coil is directly from my local Cub Cadet dealer.

This is the new coil installed. I'm not sure what the Gap should be between flywheel and pick ups on coil. I have it fairly close as it is. I'm getting no spark coming out of this brand new coil. Now I'm assuming that the original coil was probably okay but there's something else going on. I've...

I installed a brand new coil. Still will not start. I put a tester between the spark plug and boot and I'm seeing no spark. I also attempted to disconnect the kill switch wire as suggested and still nothing. I see that there is an adjustment for the coil to be spaced off the flywheel. Not sure...

I bent the tab away so it would contact during the starting process but nothing. I have new coil coming in tomorrow. I will try it and see what happens & report back to the forum.

Good suggestion & I tried that, didn't make a difference as far as starting up. I should have my new coil tomorrow and then I'll see what happens after installing it.

I bent the tab away from the brake pad so that it wouldn't touch in the run position. Still wouldn't start, so I bent it back into its original position. I should have a new coil setup tomorrow. I'll install that and then report back.

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...

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.

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

Another pic showing where kill switch arm contacts metal.

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...

See pic showing with the safety lever closed ready to start vs safety lever open to stop motor. The kill switch arm still makes contact (grounding out), whether safety lever is squeezed closed to run or released to stop motor from running. The grounding happens at two different locations on...

Hi, the model is SC900 rear wheel drive & motor ser# 5X70AU/1811131A0082 the best I can tell on the faded decal on the motor. I'm almost certain it's a cubcadet motor and not a briggs.

Hey everyone, I have a new to me SC900 rear wheel self propelled mower. Had been running great, only used a dozen times or so until a month ago.... Was taking a long time to get it to fire up.. over time, it went from 1 single pull, increasing over time to 6 or 7 pulls, then up to a couple...