[shnaig]

I have a Snapper 21" self-propelled mower. I changed the drive belt about 4 months ago and it's been working fine. All of the sudden the drive disc seem s to slipping under any kind of load including higher speeds (positions 4,5 &6). The belt doesn't seem to be worn and there's no obvious way to adjust the tension. Any input would be appreciated. Thanks.

 

[Monk]

Check the bearings on the shaft that the rubber driven disk rides.

 

[Mark / Ohio]

Just found this manual for another thread. Maybe it will help here.

Snapper Walk Behind Mowers Service Manual | ManualsOnline.com