Before you can find a manual, you need to know the model number. There are several websites that have free manuals - one of the most popular ones is manuals.com. If you can't find one there, you can Google for the manual you want. Your search field will look like this "manual for homelite xxxxxxxxx" where the x's represent the model number.
lawnandgarden.manualsonline.com/manuals/mfg/homelite
you can find a users manual or troubleshooting guide for the Homelite rototiller model HTC 12, on the Homelite website. Click on the Service and Support tab and then on Operators Manuals.
In the store you bought it in.
It seems to old and homelite no longer has it for download. I would say your best bet is too find a repair shop because most of them have all of the old manuals.
Look in the owner's manual. I can't find the owner's manual. I know it's simple because I set it before but I can't remember what I did and I can't find my manual.
Did you check the owner's manual? I think the fuse box diagram is usually in the owner's manual for General Motors products, and on the newer ones, it is also on a sticker on the back of the fuse box cover.
check in the nearest junker, they may have a crash one with the manual in the glove box
Open and read your owner's manual.
Owner's manual.
eBay
Usually the owner's manual.
craftsman edger 536.797521 user manual