LiftMaster 84602 Owners Manual - English French Spanish - Page 13
Tight en t he Chain
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Assembly 3 Tighten the Chain 1. Loosen the inner nut and lock washer on the trolley threaded shaft. 2. Tighten the outer nut until the chain is a 1/2" above the base of the rail at the midpoint of the rail. 3. Re-tighten the inner nut. Slack in the chain is normal when the door is closed. No readjustment is necessary. 1/2" (13 mm) 13
13
Assembly
3 Tight en t he Chain
1.
Loosen the inner nut and lock washer on the trolley threaded shaft.
2.
Tighten the outer nut until the chain is a 1/2" above the base of the rail at the midpoint of the rail.
3.
Re-tighten the inner nut.
Slack in the chain is normal when the door is closed. No readjustment is necessary.
1/2" (13 mm)