Horizon Fitness AFC-566F Manual page 134

7-1 Cleaning the Vacuum Piston
Assemble the vacuum piston.
(1) Insert the spring and vacuum piston into the
hole.
- Turn the piston so that its groove will fit on the
piston set screw and insert it.
(2) As you turn the piston, tighten the piston set
screw gradually and insert the screw into the
groove on the piston. Tighten the piston set
screw slowly until it stops.
- Do not tighten the set screw so much so that the
piston is scratched.
(3) Loosen the set screw until the piston drops by
itself.
(4) Fasten the lock nut.
124
Piston
Set Screw
Turn the piston and insert the piston set
screw into the groove.
23051
70101C1
Lock Nut
Groove