Young Electric Mate - Assembly Steps 4 & 5

STEP4
Insert Middle Support Tube (10) into the base of Bottom Fixing
Bracket (2), then fix them with M10x60 Bolt (11) and M10 Lock
Nut (9).
STEP5
Install the adjustable Connecting Block (12) to the Middle
Support Tube (10), then tighten the knob from the Connecting
Block (12).
50Nm