Owner`s manual

Model 8720 / 8865 -21-
The side shaft chain drive (PTO input shaft to the side line
shaft drive sprocket, Figure 11) is automatically tensioned
by a spring-loaded idler nylon roller. The extension spring
should extend 2" from its neutral 5" total length.
Manual adjustment for the automatic tensioning idler,
nylon roller assembly is located at the right rear of the
spreader’s front bearing mounting plate.
7.2. SPINNER MATERIAL GUIDES
Regularly inspect and adjust two spinner material
guides located at both the left rear and right rear of
the spreader. Create a 1/8-3/8” clearance between
material guides and spinner teeth (Figure 12).
Maintain the recommended clearances for
maximum spreading pattern. Adjust to prevent
excessive manure build-up on material guide inner
surfaces. Adjust to prevent manure chunks or
foreign object lodging between material guides and
spinner teeth.
NOTE: Excessive lodging can cause premature
spinner tooth wear, “bent-over” or even breakage.
7.3. SHEAR ARM MATERIAL GUIDE
Adjustment for the 1/8-3/8” clearance of each material guide to spinner tooth is made by loosening the jam nut
on the linkage arm and turning the linkage arm to either move the guide in closer or out farther from the spinner
teeth. After adjustment has been made for the 1/8”-3/8” clearance, retighten the jam nut to hold the material
guide in place. Once recommended clearance is obtained turn spinners over by hand in the direction by which
the spreader would turn to check clearance. Do not turn in the opposite direction as front chain tightener
damage could occur. If foreign objects enter the spinner area the front pivot bolt on the shear arm is designed to
shear. The extension spring will pull the material guide away from the spinner until the shear bolt is replaced.
The 1/2-13 x 3 1/2” grade 5 replacement machine bolts are stored under the rear shield. For replacement install
with 1/2” flat washer on top of shear eye and on bottom of block and tighten nylon locknut firmly.
FIGURE 11. SIDE SHAFT CHAIN DRIVE
FIGURE 12. MATERIAL GUIDE CLEARANCE