For 4100-4700, 5180-5190, 5700-5800, 7600-7900, 8800 and 9000 series upright vacuum cleaners
A belt in good condition will turn the brush roll efficiently, providing stronger beating and sweeping action. Belts will age and wear with normal use and should be checked periodically for cracks, cuts, or loss of tension.
For optimum performance, replace bets at least every 12 months.