Hi! You will be very pleased with this machine. I own two of them. One is the Kenmore 1040 the other was sold in Germany under a different badge.... the whole machine is bright pumpkin orange! Anyhow, these machines run on two belts. Remarkably, they are still sold by Sears on "SearsDirect". They are fairly easy to replace. You may consider purchasing a pair for future use. You never know when Sears will stop carrying them. Cost: about 5.00 each belt. The upper thread tensioner is also available and VERY easy to replace. Cost: about 15.00 Enjoy! Ted