Removing the secondary.
It is a 2 man job if you don't want to remove the chain case cover. Pull the rubber out of the side of the chaincase cover. Remove the bolt holding the top gear on. On the cluch side remove the cover and belt. Behind the secondary is a retainer plate. One bolt to take it off, Remove it. Have someone use a bar of some sort to hold the gear up. There is also a bushing behind the gear. Slowly pull the secondary with the jackshaft as the other person feeds the bar into the jackshaft opening to hold the gear and bushing.
If you actually want to remove the secondary from the shaft it is pressed on.
To replace the secondary , do everything in reverse and be carefull putting the jackshaft back into the bushing and gear. If you drop either you will have to remove the chaincase cover.
If this is required put your sled on its side when you remove the cover and you will lose no oil.