Need owners manual download for craftsman lawnmower model 917378420

"ManageMyHome has manuals for Craftsman and Kenmore. Here's a link to the one you want:

craftsman lawnmower model 917378420

Here's a link to some parts and exploded parts diagrams:

Craftsman - Gas, walk behind lawnmower - 917378420

Good link but they cover much, much more than those two. Owner's Manual | Find Product User Manuals - Managemyhome.com