Figure 2e shows the parts that should be loose once the spring housing has been removed.

Shown from left to right is (1) spring housing, (1) bolt backing plate, and (3) M8 bolts and M8 lock washers. Torque all three M8 bolts to 35 lb-ft (dry) or 28 lb-ft (lubricated with oil). Failure to properly torque bolts can result in premature fatigue or loosening of the bolts

The autotensioner is supplied in its lowest position. Figure 2f shows how no open grooves are visible at the lower portion of the autotensioner. Figure 2g shows the autotensioner adjusted to its highest setting, where 4 grooves are showing. In the case of a k24, typically 2-3 grooves will need to show if the supplied belt is used.

In the case of a k20, typically 3-4 grooves will need to show if the supplied belt is used. The supplied belt is a 48.5” long 6-rib belt. Note that between the lowest and highest settings, there is enough adjustment to compensate for about a 2” variation in belt length. This allows some flexibility when it comes time to replace your belt.