First step would be to go to this link and type in your model number:
https://support.lawnboy.com/portal/...rol=SetCommunity&CommunityID=217&PageID=30005
Then select manuals and in there is a manual explaining the drive systems in use. (144 pages) Look for the link titled:
"Toro/Lawn-Boy Walk Behind Power Mower Drive Systems Manual [ English ]"
They show how they work along with pictures and troubleshooting information.
https://support.lawnboy.com/portal/...rol=SetCommunity&CommunityID=217&PageID=30005
Then select manuals and in there is a manual explaining the drive systems in use. (144 pages) Look for the link titled:
"Toro/Lawn-Boy Walk Behind Power Mower Drive Systems Manual [ English ]"
They show how they work along with pictures and troubleshooting information.