Precor EFX546i Owner's Manual page 107

Replace the hood and secure it.
Important: Use your fingers to properly align and thread the four
hood fasteners. Wrench tighten the two side fasteners before
wrench tightening the two fasteners that secure the front of the hood.
Secure the hood using four buttonhead screws (E) and four
washers (B).
Start with the side fasteners and then wrench tighten all four
fasteners.
Side fasteners
Front fasteners
C9x6i Commercial Treadmill Assembly Guide
Tighten all mounting screws.
1. Start at the base and alternately tighten the eight fasteners that
secure the upright supports to the base assembly.
2. Wrench tighten the six screws that secure the display console to
the upright supports.
CAUTION: Be aware of the handrail extensions when you are
working around the front of the unit. It is easy to bump your
head or sustain other injuries if you ignore the location of
the handrail extensions.
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