I have a Toro Electric Start Recycler Mower with the Personal Pace
self-propel system. It's about a year and a half old. About 90% of the
time when you start it in motion, or going up a grade, there is a
grinding noise coming from the rear wheels. At least it sounds like
that's where it's coming from.
Once the mower is moving on the level, there is no noise.
Anybody have any idea what could be the cause of this??

Is it belt or shaft drive?.....sounds like somethin's slipping

If the rear wheels are geared you may have dirt or grass in the
casings.....
can you clean 'em out? don't use any lube or you'll just attract more
dirt.

Has it been doing it all the time since new, or did it just start?

Check
http://www.toro.com/home/mowers/recycler/index.html

tomkanpa wrote:
I have a Toro Electric Start Recycler Mower with the Personal Pace
self-propel system. It's about a year and a half old. About 90% of the
time when you start it in motion, or going up a grade, there is a
grinding noise coming from the rear wheels. At least it sounds like
that's where it's coming from.
Once the mower is moving on the level, there is no noise.
Anybody have any idea what could be the cause of this??