Owner`s manual

Model 8720 / 8865 -20-
The third chain drive is automatically tensioned by a
spring-loaded nylon idler roller. The compression spring
should be compressed to 4.5" in length. See Figure 8.
To increase tension on the automatic tightener, tighten
the adjuster bolt located at the left side of the spreader.
FIGURE 8. THIRD CHAIN DRIVE
The RH auger chain drive (Figure 9) is automatically
tensioned by a spring loaded idler nylon roller. The
compression spring should be compressed to 4.5" in
length. See Figure 9.
To increase tension on the automatic tightener, tighten
the adjuster bolt located at the right side of the spreader.
FIGURE 9. RH AUGER CHAIN DRIVE
The LH and third auger chain drive is automatically
tensioned by a spring loaded heavy compression spring
and sliding idler sprocket assembly (Figure 10). The
heavy compression spring should be compressed to 4”
in length.
Manual adjuster bolt for the automatic tensioning idler
assembly is located slightly right of center on the
spreader tank.
FIGURE 10. LH & THIRD AUGER CHAIN DRIVE