LiftMaster MJ MJ5011E Installation-2008 Manual - Page 8

POSITION OPERATOR, Door Sprocket, Operator Drive, Sprocket, Set Screw

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TYPICAL INSTALLATION 6 POSITION OPERATOR Adjust operator until chain is taut (not tight). If chain is too tight, it may cause damage to operator. Door Key Door Sprocket Set Screw Key Secure both sprockets with key and set screw. If sprockets are not secure, they may drift and cause damage to operator. Operator Drive Sprocket Door Sprocket Keep door sprocket and operator door sprocket aligned. If sprockets are not aligned, they may cause premature wear on the chain. 8

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8
6
POSITION OPERATOR
Door
Door Sprocket
Key
Key
Operator Drive
Sprocket
Adjust operator until chain is taut (not tight). If chain
is too tight, it may cause damage to operator.
Keep door sprocket and operator door sprocket aligned. If sprockets are not
aligned, they may cause premature wear on the chain.
Secure both sprockets with key and set
screw. If sprockets are not secure, they may
drift and cause damage to operator.
Set Screw
Door Sprocket
TYPICAL INSTALLATION