The opt-wheel normally needs replaced if your garage door opener is short traveling in both directions (open and close) in the excess of 6 inches at a time then stopping.
Works for the following Belt Drive models: Relia-G 600 (model 1024) Relia-G 800 (model 2024) QuietLift 600 (model 1042) QuietLift 800 (model 2042) Overhead Door (model 1026) Overhead Door Legacy 800 (model 2026)
14 tooth belt sprocket for Genie and Overhead Door belt drive garage door openers
Compatible with the following operators: PMX700 GPS700-IC PMX1200 GPS1200-IC PMLD500 PMX500-IC/B PMX300-IC/B IC250/B PMX60-65-70-75-80-85-300IC-500IC-IC250 among others