Z945m fuel problem

[Viper65785]

I have a 2019 John Deere z945m EFI with 200 hrs. After start up, if I try to go full throttle it doesn’t go to full rpm. I have to power back then slowly go forward until full rpm is reached. It just seems like it’s not getting enough fuel. Once it reaches full rpm I can mow with no issues. Problem is worst if I engages the blade. But with blades engaged I can pull back on throttle and slowly go forward and it will reach full rpm

 

[mechanic mark]

Try using 93 octane gas with a quality brand fuel treatment & check air filter frequently.

https://www.lawnmowerforum.com/threads/fuel-treatment-advice-from-tech-of-21-years.56896/

 

[StarTech]

You may have a cylinder down (not working).