:welcome:, If the shifter feels normal, and it goes into gear but doesn't move its like brian says it could be the free wheel pin. But if you are shifting into gear and it bogs the motor and doesn't move it could be stuck in 2 gears at the same time, or could have so trans/clutch issues.
Hopefully its the freewheel pin as its the easiest fix. We always like easy the easy fix.
well there should be 4 belts behind the engine, 2 belts for pto that runs the deck, or other attachments, and 2 for the drive shaft. If the belts that go from the engine to the drive shaft are not on its not going to move. You can tell if they are on by looking at the machine from the side. Notice when you engage the pto belts theres a small pulley that as you move the pto lever to engage it moves and tensions the pto belts which engages the attachments. The pto and belts can be seen right behind the front axle. The pto belts are the 1st 2 on the engine pulley I think. The driveshaft belts are the last 2 belts on the motor. Hope this helps. Bolens 1000 is great with pictures. Hopefully he can show you with pics what im trying to explain.
How many Belts do you have on the tractor?
There should be 1 PTO belt (the one closest to the engine)
You should have 1 Drive Belt. The only bad thing about the G-10's is on the earlier models, you have to shut the engine down to switch from Low to High Range. Low range is on the pulley farthest away from the engine, and High Range is the middle groove. Later models of the G-10's Had 4 belts with the speed range lever built into the transmission. We first have to figure out what system your G-10 is and go from there