How to control the hardness of the front fork of XCR?

XCR front fork is divided into oil spring fork and air fork, and its control method is as follows:

1. Oil spring fork, and the left shoulder of the oil spring fork has a pre-tightening adjustment knob. Turn the knob to the "+"direction to harden the front fork. Turn the knob in the "-"direction to soften the front fork.

2. Air fork, the left shoulder of the air fork is provided with an inflation nozzle which is connected with a high-pressure air pump, so that the hardness of the front fork can be adjusted by inflation pressure. High inflation pressure will harden the front fork. When the inflation pressure is low, the front fork can soften.