Hi Bert,
Transaxle oil changes - must confess I dont recall seeing this on the service schedule (have I missed it?)
Another confession - in the 10 + years I have owned this mower, I have only changed the trans oil (30W) once and that was when she had a heart transplant (from Onan to B&S) about 8 years back.
From your comments above, it would seem I have been very neglectful - will now schedule a trans oil change very 2 years (sound okay ?)
As for the grass growth - you will probably not be surprised to hear that I have a small stable of pre loved mowers, from 60 in down, so the T 212-H (my wife's favorite) is not critical to our maintenance activities.