为了知道阻力失灵的原因，我们需要你自己检查一下设备：第一：你往“-”的

In order to know the cause of the resistance failure, we need you to check the equipment yourself: <br>First: You turn the red resistance knob in the "-" direction (as shown in Figure ①), and pull it out when it is loose to see if it can be pulled out Adjust the rod, if possible, check whether the thread of the adjusting rod is clear or grounded, and whether the spring is intact (see Figure ②). <br>Second: If you can’t pull out the adjusting rod directly, you need to use a screwdriver and a wrench to disassemble the front wheel protection plate (as shown in Figure ③), turn 4 screws to remove the protection plate, and you can see this structure (as shown in Figure ④). Unscrew the small nut pointed by the arrow with a wrench, and then turn the resistance adjustment rod to the "-" direction, pull out the iron rod, and check whether the thread is intact. <br>thank you for your patience!

In order to know the cause of resistance failure, we need to check the device yourself:<br>First: you turn the red resistance knob (Figure (1)) in the direction of "-" until it is very loose and pull it out to see if you can pull out the adjustment rod, to see if the thread of the adjustment bar is clear or flattened, and if the spring is intact (Figure (2)).<br>Second: If the adjustment rod cannot be pulled out directly, you will need to remove the front wheel protection plate (Figure (Figure 3) with a screwdriver and wrench, and turn away 4 screws to remove the protection plate to see the structure (Figure 4). Unscrew the small nut that the arrow points to with a wrench, turn the resistance adjustment bar all the way to the "-" direction, pull out the iron bar, and see if the thread is intact.<br>Thank you for your patience!

In order to know the cause of resistance failure, we need you to check the equipment yourself<br>First: you turn the red resistance knob in the direction of "-" until it is very loose, and pull it out to see if you can pull out the adjusting rod. If you can, check whether the thread of the adjusting rod is clear or flat, and whether the spring is in good condition (as shown in Figure 2).<br>Second: if you can't pull out the adjusting rod directly, you need to use a screwdriver and wrench to remove the front wheel protection plate (as shown in Figure 3), turn four screws to remove the protection plate, and you can see the structure (as shown in Figure 4). Screw off the small nut pointed by the arrow with a wrench, then turn the resistance adjusting rod and pull out the iron rod to see if the thread is in good condition.<br>Thank you for your patience.<br>