Need help working an antique sewing machine

I just inherited an antique sewing machine a Singer 338 and it didn't come with the owners manual I think I have managed to thread it correctly but every time I start to sew something the threads underneath get all Рапунцель - Запутанная история I've been trying it on my own for a few days so any help would be appreciated. Above it a picture of the actual machine.
 Need help working an antique sewing machine
 silly_bats posted Больше года
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