Terry Hering

It all depends on how hard you press on the brake. Try pressing on brake hard and soft and then try to shift then.

 I have I have the same your Cub Cadet 2018 Challenger 750 and I have new shift to put in it and all the new shifter is giving me problems and I found out that if you brake lightly you can go from low high and neutral and if you can't get a past neutral into reverse or Park, brake a little harder and it should go all the way up reverse and Park. Hopefully that helps you out. I took my old one apart and there's only two little pieces in there besides the shifter and a spring into little levers at hit notches.

4 hours ago, Mikey1971 said:

@Terry Hering which muffler did you purchase?  If you have not tried the yoga mat underneath the seat, well worth it.  What other things have you found out?  BTW - welcome to the board!I'm still under warranty so they put Muffler number 759 - 0 5 5 8 3 on it. Price is $962.95. Not Counting all the other parts that they needed for the muffler. The template is $15.95, ignition cable which was $49.95. Then I asked him do a once-over the make sure everything's okay before the warranty goes out. And I like a oil change, now that I got it back it sounds like the wet clutch is going. And I did not try to yoga mats yet but I pick some up today. It's not that much quieter with a new muffler on.

 I hope that solves your problem? Mine was brand new when it happened to me. and it is really easy to make a new one, cuz if you order one for like $50. I'm learning a lot since I bought mine brand new. because dealers don't tell a whole lot when you ask him questions.

On 3/21/2020 at 8:56 PM, PierceIt said:

Hi everyone - I was driving my 2017 Cub Cadet Challenger 750 EPS today on the ranch when it dies on me. It started right up - and then as i was driving after about 50 feet the engine just turned off. It was running perfect before it cut out on me. No alarms, no weird sounds or smells. It just turned off. 

When I turn the ignition key, the starter cranks away and the battery and starter turns fast and strong - but the engine doesn't start.

I've confirmed gas flow to the carb - that the fuel filters are clean and clear. I've replaced the spark plug with a brand new one. I checked every fuse with a meter. I have confirmed air filters and airflow are good. 

But the darn thing cranks away without the engine even making a sputter or even attempting to fire.

Is there a kill switch somewhere that could have been tripped? I checked the seatbelt sensor, the brake sensor, and parking gear sensor - all are working and i'm in Park, pressing down on the brake, and have the seatbelt latched when i try to start. but - nada!

It acts like it isn't getting a spark. but like i said i put in a new spark plug. I have a feeling there is a sensor or an electrical kill switch somewhere that tripped. 

open to any ideas.

thanks all

Pierce

 replace the spark plug wire. I had the same thing happen to me and there's carbon film elements that are in that wire and they just fall apart so I replaced it with a real spark plug wire with wire in it

 I'm hoping that would solve your problem. I put a real spark plug wire in and made it myself.

@Mikey1971 @Mikey1971  I just had the upgraded Muffler put on, and it's not any quieter. I have a Cub Cadet 750 Challenger 2018, I just joined myself. I have a fully enclosed cab and yes it is noisier than without. I'm finding out a lot of things that they don't tell you about to.