8.Put the thicker end of bottom frame tube
(4) to plastic protective sleeve (16) and
please make sure they are tightenly
connected.Connect upper frame tube (6)
to middle frame tube (5),and the connection
is achieved with M8 Bolt (8) ,M8 Spring
washer (10),and M8 washer (9).Tighten the
Connection with L shaped wrench (B).Repeat
the process on the connection between upper
frame tube (6) and middle frame tube (5).
9.Connect cruciform tube (7) to the 4 pcs
upper frame tubes (6),using M8 Bolt (8),
M8 Spring washer (10),and M8 washer
(9).Tighten the Connection with L shaped
wrench (B).
16