leatherjacques

I'm in the same boat here, but have a singer 211 G 155 walking foot machine. Need to get the sped reducer thing happening ASAP. My question is, do new belts come with the assembly, or is that something we are left up to. Also, if we need to source, what is the best way to determine the size (length) of the belt we need? Thanks, and apologies if I'm asking silly obvious questions - brand new to this machine and sewing in general.