Trying to replace the drive sprocket on the center chain.lock coller seams to b seized and the bearing also .iv tried heat and pb blaster.what should the lock cooler do? Slide out of the way rotate out of the way.seems to seized up on the shaft pretty good.any help would b great

 

I've had plenty of problems with these in the past on freezing up.Most of the time I just had to use an air chisel to get them off. Most of the time they're too far gone to reuse or bad to begin with. New ones aren't cheap,but necessary to have.Dirt Cheap Yamaha, Polaris, Suzuki & Kawasaki OEM Parts & Accessories – Cycle Parts Warehouse BUT there's one on ebay that can save you 25 bucks.http://www.ebay.com/itm/Polaris-ASM-Relube-Bearing-Kit-Polaris-2201115-NOS-/231614851612?hash=item35ed522a1c&vxp=mtr