I have a Liftmaster 1991 1/3 hp opener, it reverses when it hits bottom, I tightened the chain and have tried playing with down force and reducing the travel adjustments but have had no luck even backing off travel maybe 3 turns, any ideas? Could it be broken to the point it cant be adjusted and needs replacing, liftmaster doesnt support earlier than 93 model year.
- posted
12 years ago