④
取下小腿保护盖上的螺丝，取下小腿保护盖
Slack and remove the screws fixing the leg rest sisor
⑤取下小腿保护盖后，取下小腿内的两条弹簧，方便后面的拆卸
Take down the spring
⑥取下小腿后盖后，取下固定上小腿底部的 4 枚螺丝，取下固定下小腿的两枚螺丝
Slack and remove the 4 screws for upper leg rest
，
slack and remove the 2 screws fixing the lowwer leg rest
⑦取下小腿脚垫，并取下后脚轮
Take down the wheel and the foot pad
Screws under the leg rest
Screws on both side of the leg rest
4 Screws on upper leg rest
2 Screws on lower leg rest
The wheel of leg rest
Foot pad
