Step 12
1. M4 boat-shape nut
(
2pcs
)
2. M4×8 hexagon cup-head screws(2pcs)
Notice: The boat-shape nut may rotate during installation. Users
could use the screws to fix it on the aluminum profile.
When installation, in order to tighten the pulley and the belt,
users could push the parts slowly in the X direction.