how exactly do you tighten or loosen the chain on a raptor 700, the owners manual doesnt explain very well, im just looking to put on a 15t front sprocket.

 

Just loosen up the allen bolts at the back of the swingarm, that secure the round bearing carrier in place. Rotate the carrier forward with a big flatblade screwdriver (in the slot on the LH side of the carrier) enough to put sufficient slack into the chain in order to accomodate the larger sprocket. Readjust the slack, then retighten the 4 allen bolts to hold it in place. Done.