10
Assembly step
Picture 3
1.
Attached back seat(#39) to front upright( #4), using 2pcs M8x55 hex bolts(#64) and 2pcs flat
washers
Φ
8
（
#55
）
.
2.
Attach air frame bolt (#16) to front upright( #4), using 1pce M8x40 hex bolt(#63), 2pcs flat
washers
Φ
8
（
#55
）
and 1pce M8 nut (#74), put the knob (#43) to the air frame bolt( #16).
3.
Attach air frame (#7) to upper cross beam(#8) by air frame fix shaft(#15), using 2pcs M10x25
bolts(#65) and 2pcs flat washers
Φ
10
（
#59
）
to tighten air frame fix shaft(#15).