Pay attention to the number of washers on the inside of your secondary clutch.
Grease the jackshaft and speedo while your in there, but don't get any on your clutch.
Drain chaincase oil - careful not to strip out the plug.
Should only be 8-10 ft/lbs of torque on the plug, don't get nuts with it.
Remove can
Remove chaincase cover
Remove bottom gear, I slide both top and bottom gears off with chain.
Good time to replace the gaskets, bearings, chain, seals etc...
Remove skid, I hang the sled with a come-a-long from the rafters.
Drive shaft should be loose after speedo bracket and bottom gear.
Having an extra hand is very helpful for the skid and pushing the track up to gain clearance for drive shaft removal.
If there isn't enough clearance side to side you may need/want to unbolt the brake/chaincase.
Chaincase holds 11oz, sparkplug wrench works the best for the filler plug. Small funnel with a hose or a lube pump is to refill.
Watch the seal around the chaincase cover, you don't want leaks.
Good luck.