Good time to get the manual out and read it cover to cover. Most of what you are asking about is in there. Don't forget to grease the pto side bearings...a weak point on these sleds.
Look for zerks & hit them. I would not worry about throttle cables unless idle starts acting goofy. Ask dealer for number of zerks & count them as you grease. Pto side bearings not easy to find so start looking & get help form dealer. Once you know locations piece of cake.
