40HOURS
7.Spindle Assembly - Apply
Figure 4-1C
(7) 40 Hours
3/8” Hex Nuts - Spring Length Adjustment
4-3 BELT ADJUSTMENT
Belt tension should be checked every 40 hours to get maximum life from drive belt and best perfor- mance from cutter. Belt tension is adjusted by increasing or decreasing the length of the spring on the moveable idler. For proper belt tension on the 48” mower, the spring length should be set at
4-4 BELT REPLACEMENT
Use only genuine Bush Hog replacement parts. A. Remove right and left side shields.
B. Relieve spring tension by loosening the two 3/8” hex nuts on the spring adjustment rod. (Figure
C. Remove old belt.
D. Install new belt, referring to the diagrams below. (Also refer to the decal on the mower deck) Be sure that the belt is properly positioned in all sheave grooves.
E. Adjust tension on the belt by adjusting the length of the spring on the moveable idler. The correct spring lengths are 71⁄16”, 65⁄8”, and 77⁄8” for the 48”, 60” and 72” mowers respectively.
F. Replace right and left side shields.
FTH 480 BELT DIAGRAM
FRONT
BELT INSTALLATION GUIDE
ATH/FTH 600,720 BELT DIAGRAM
FRONT
BELT INSTALLATION GUIDE
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