it should be in you manual but the guys a Stokleys told me to NOT LET IN IDLE for a long period of time and to keep the RMP's moving, thus change speeds when running but I thought like you that I didn;t need to open it up but they told me that was fine, and that idling was harder on them that anything, it causes the motor to load-up. He also mentioned something about adding an extra quart of oil to the 1st (break-in) tank, it helps the rings seal.
Hope this is alittle help...