New CForce400s in CFMOTO ATV Forum Posted October 29, 2018 After one and a half years, my 400s is still still in like new condition. It has a few scratches here and there from trail riding, but nothing large. I'm putting a plow on it this year. I've had two issues with this quad that I'd like to share with any likely buyers. These issues have been acknowledged by CFMoto so I doubt they will continue past 2017. 1. Air box recall kit and warping. There is a recall kit available for the 400 because of oil blowing back through a breather tube into the air box. Also, on my machine, the air box warped so bad I couldn't seal it. Your dealer can fix both of these free of charge. 2. Radiator Thermoswitch A known issue and likely fixed problem with most models thermoswitches caused then to fail and cause machines to overheat when the fan no longer worked. Easy fix.