The user guide or owner's manual can be downloaded from snapper and sears with the model number in pdf format and you can save it.
To change the belt on a Sears tiller model 785.294030.253, first, ensure the tiller is turned off and disconnected from the power source. Remove the belt cover by unscrewing any bolts or fasteners. Then, carefully detach the old belt from the pulleys, and install the new belt by threading it through the pulleys in the same configuration as the old one. Finally, reattach the belt cover and test the tiller to ensure proper operation.
Z-180 3k
Get your model number and put it into a google search like this "snapper model *******" You should get a few companies that list the parts for it.
AX-42
make a drawing of how the old one is on it before replacing it,
how to replace belts on gilson model 51179
What is the belt diagram of a wizard power reverse garden tiller?Read more: What_is_the_belt_diagram_of_a_wizard_power_reverse_garden_tiller
To change the drive belt on a Troy-Bilt Bronco tiller, first, ensure the tiller is turned off and disconnected from any power source. Remove the rear cover to access the drive belt, then carefully detach the old belt from the pulleys. Install the new belt by looping it around the pulleys in the same configuration as the old one, and reattach the rear cover securely. Finally, test the tiller to ensure the belt is functioning properly.
The easiest way I found was to remove the belt from all the pulleys stand the mower up on the rear wheels then squeeze the belt through the rear axle and engine pulley
Gates 6898
To change the belt on a handy hobby tiller, first ensure the tiller is turned off and unplugged for safety. Remove any covers or shields that protect the belt area, usually secured with screws or bolts. Loosen the tension on the old belt by adjusting the tensioner or removing the drive pulley, then slide the old belt off and replace it with the new one, ensuring proper alignment. Finally, reassemble the covers and check that the belt has the correct tension before using the tiller.