Chet S Delta , OH December 12, 2015 Appliance: Frigidaire Frg(V1) / Washer F21C445CS3 Frigidaire Washer F21c445cs3: Belt was slipping. How to replace Idler Pulley. I replaced the belt and the tensioner along with the spring for it. The tensioner c clip was hard to get to. There wasn't much room for my hands. 7 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes