This excerpt from the user's manual can explain the problem of your drive belt.
1/4" nut driver (recommended) Tin snips (for new duct installation)
8" or 10" pipe wrench
8" or 10" wrench (for gas connection)
Clamps for an exhaust duct
Threaded connection sealing compound - propane gas resistant Clamp level
Levelling feet (4)
The bag of coins is in the drum of the dryer. Location requirements
29" wide models Dryer dimensions
223/4" (578 mm) 273/4"* (705 mm) 26"** (660 mm) 29" (737 mm)
411/2" (1054 mm)
11/2" (38 mm)
A You'll need: Wide opening folding door
* 6.5 cu. ft. (0.184 cubic meters) M or 7.0 cu. ft. (0.198 cubic meters) capacity models ** 6.0 cu. ft. (0.170 cubic meters) capacity models NOTE : Mounting instructions are included in the packaging.
Vacuum pipe connection
If the site is equipped with a drainage system, the condensed water can be drained off directly through a commercially available hose. Follow the instructions below to connect the hose to the rear of the HOOVER NDE H9TCE dryer or to each belt:..."
WHIRLPOOL AWZ 7813, BOSCH WTW8759A, WHIRLPOOL AZA-HP 9781, AZA-HP9781, , WHIRLPOOL AZB 7200, SIEMENS WT43H002, LG DLE3170W, HOOVER NDE H9TCE, NDE H9TCE
Manufacturer's Drive belt for Dryer HOOVER NDE H9TCE