12.
(A)
To attach the
chains
on the front of the top beam, measure and mark 1.5in (4cm) from
the bottom and 15in (38cm) toward the center, from the end of the top beam. Insert the small
nail
through
loop
in the last chain link on one chain, and hammer it into that spot. Repeat on the
other side of the motor mounting brackets.
(B)
From the nail, measure about 25.5in (65cm) toward the
center of the top beam and loop the chain around your
thumb,back toward the motor and above the nail. Drape
the top of the chain over the motor sprocket so it locks in
place. Repeat on the other side.
(C)
On the right side, place the
sprocket
in the chain loop and attach the
quick link
through the
hole in the sprocket, with its opening facing away from beam. Don’t tighten the link. On the left
side, attach the spring and tighten the quick link, ensuring the link nut is facing away from the
beam.
(D)
Carefully stretch out the spring from the left side to attach it to the other end to the open
quick link on the right side. Tighten the right quick link to lock the chains together.
Attaching the chains
Drew’s Note: We recommend a friend help you connect
the spring and each person wear safety goggles
during stretching. The chain can snap back, causing
damage to people, pets, and surroundings!
Chain Mounting
Hardware Bag A
Spring Hardware Bag B
1.5in
15in
Drew’s Note: You can adjust the spring tension on your frame by moving the nails toward or away
from center. The most important part is that the spring keeps the tension on the chains. We use nails
to connect the chain to the frame, so if something goes awry, only the nails will be removed without
damaging your frame.
Chain Mounting
Hardware Bag A
25.5in
13
