Yamaha YXR70FX Owner's Manual page 49

Adjust the spring preload as follows:
To increase the spring preload, turn the ad-
justing ring in direction a.
To decrease the spring preload, turn the ad-
justing ring in direction b.
1. Spring preload adjusting ring
2. Position indicator
A special wrench can be obtained at a
Yamaha dealer to make this adjustment.
Standard position: B
A- Minimum (soft)
E- Maximum (hard)
1. Special wrench
4-22