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“--”

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 of "--" (as shown in ①), pull it out when it is very loose, and see if it can be pulled out. Take out the adjusting rod. If possible, check whether the thread of the adjusting rod is ground and 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, turn the 6 screws to disassemble the protection plate and you can see this structure (see Figure ③). Unscrew the small screw pointed by the arrow with a wrench, and then turn the resistance adjusting 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 to pull out, to see if you can pull out the adjustment bar, you can check if the thread of the adjustment bar is flattened, the spring is intact (Figure (2)).<br>Second: If the adjustment bar cannot be pulled out directly, you need to remove the front wheel protection plate with a screwdriver and wrench, and turn 6 screws to remove the protection plate to see the structure (Figure (3)). Unscrew the small screw to which the arrow points with a wrench, then turn the resistance adjustment bar all the way to the "-" direction, pull out the iron rod, 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 "--" (as shown in Figure 1), and pull it out when it is very loose to see if you can pull out the adjusting rod. If you can, check whether the thread of the adjusting rod is polished and whether the spring is in good condition (as shown in Figure 2).<br>Second: if you can't directly pull out the adjusting rod, you need to use a screwdriver and wrench to remove the front wheel protection plate. Turn six screws to remove the protection plate, and you can see the structure (as shown in Figure 3). Open the small screw pointed by the arrow with a wrench, then turn the resistance adjusting rod, pull out the iron rod and check whether the thread is in good condition.<br>Thank you for your patience.<br>