New Holland CX720 Repair Manual page 4075

Drive system Rear drive belt - Remove (K.64.C.40.15 - F.10.A.10)
1. Remove the belt guard retaining bolts (1) and remove
the belt guard (2) from the combine.
2. Release the idler pulley handle (1) to eliminate the
tension on the chopper drive belt.
3. Remove the belt (1) from the chopper sheave (2).
CROP PROCESSING - RESIDUE HANDLING Straw chopper
2 4/7/2006
K.64.C / 9
1
20011085
2
40011004
3
40011005