Table of Contents
Advertisement
Assembly
STEP 5 Tighten the Chain
1.
Spin the inner nut and lock washer down the trolley threaded shaft, away from the trolley.
2.
To tighten the chain, turn the outer nut in the direction shown.
3.
When the chain is approximately 1/4" (6 mm) above the base of the rail at it's midpoint, retighten the inner
nut to secure the adjustment.
Sprocket noise can result if the chain is too loose. When installation is complete, you may notice some chain droop
with the door closed. This is normal. If the chain returns to the position shown when the door is open, do not re-adjust
the chain.
NOTE: During future maintenance, ALWAYS pull the emergency release handle to disconnect the trolley before
adjusting the chain.
You have now finished assembling your garage door opener. Please read the following warnings before
proceeding to the installation section.
Chain
Base of Rail
10
Trolley
To Tighten
Outer
Lock
Threaded
Outer Nut
Nut
Washer
Shaft
To Tighten
Inner Nut
Inner Nut
1/4" (6 mm)
Mid length of Rail
Advertisement
Table of Contents
