Dongfang Motor DF150GKA Assembly Instructions Manual page 21

3.1 Place the left roll bar to the back fixture and keep the front end to the joint bolt. Screw
the middle of the joint bolt 2-3 circles with the spanner.
3.2 Take 1 PC M8X50 hex flange bolt and R washer (face inside) to the end of the roll bar from
oustide to inside. Then place another R washer and flange nut to that bolt and screw on( Do not
fasten it).
4、The Top roll bar；
Place the top roll bar (Three angeled) to the middle of the left roll bar.