Do yourself a favor and remove the fuel tank first. Then the track and suspension. Pull the muffler, then the cover from the chaincase. Pull the chain and gears. Move on to removing the drive shaft. Remove the secondary jack shaft (you may need to whack it hard with a plastic mallet) Now use a cold chisel and pop off all the rivets from the chaincase. The hardest ones are on top behind the oil tank. Remove the oil tank mounting bolts, to loosen things us to get to the rivets. Install new chaincase using 6mm bolts and the plate from 'Doo. It really isn't that hard, just time consuming.
The reason I say remove the fuel tank is that on the 2013's there is very little clearance between the oil tank and the fragile fuel tank fittings. I horsed things around too much and snapped one of mine off.. a $200 used fuel pump setup and I was back in business.