Hitachi TRK-3D80 Belts questions

[smj043]

HI everyone, having trouble determining what sizes these belts are also where to get some from. I have the manual which says:
part number 48202272 x3
and 4833457 x2
4853700 main belt
4853718 main belt

not sure if this is correct. One belt totally melted away to mush.

 

[smj043]

 

[smj043]

bought a bag of different size belts - picked the second smallest pair in the bag and all working better than ever.

 

[BikaDamo]

Which bag did you use, and did you replace any others?