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4-3 BELT ADJUSTMENT
Belt tensions should be checked every 40 hours to
get maximum life from drive belts and best perfor-
mance from the cutter. Belt tension is adjusted by
Figure 4-2 5/16” Hex Nuts - Spring Length Adjustment
increasing or decreasing the length of the spring on
the moveable idler. For proper belt tension on the
mower, the spring length should be 6-3/4” (Figures 4-2 &
4-3) To adjust the spring length, loosen or tighten the
5/16” hex nut on the spring adjustment rod until the cor-
rect spring length is reached.
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 5/16”
hex nut on the spring adjustment rod. (Figure 4-3)
C. Remove old belt.
D. Install new belt as shown below. (Also refer to
the decal on underside of belt shield) 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 cor-
rect initial rod length is 1-13/16”.
F. Replace all shields before operating machine.
12
40 HOURS
7. Spindle Assembly - Apply 3 shots of multi-
purpose grease with grease gun every 40 hours.
Grease fittings for spindles are accessible
through holes in the shields.
(7) 40 Hours Rod Extends 1-13/16” From Frame
Figure 4-3
RFM 60 BELT DIAGRAM
FRONT
5/16” Spring Tension Adjustment Nut
1-13/16”
6-3/4”
(From Inside of Hook to Inside of Hook)