On a down hill my "07 700 EFI has a loud chatter in the tranny or somewhere down there. It gets worse when the brake is applied (hand and foot). Nothing stuck in the brake and everything is tight. Somehting is hitting somewhere cause I can feel it in the foot boards. Can anyone help????

 

Because Polaris used u-joints instead of cv-joints in there drive train this is what you are probobly hearing, is the driveline slack when you brake hard or are going down hill. All polaris's do this and it is normal just what you get when you have u-joints!

 

yes that is what is hapening to mine and that in the noise he is right