You can buy replacement handles. Here's an article that explains how to remove the old one and attach a new one. I hope this helps you. Wishing you the best.
What’s the problem with it? Is it possible to post a photograph?
Can you call customer service for the brand of your chair, or look on their website for a manual and replacement parts.
The company has been out of business for a long time, but I can check their website. Thank you
You can use the similar parts of your adjusting recliner chair. If your recliner chair brand close their business you did not get same brand parts but you can get similar parts at online. I read this recent published article with video on how to replace a lever on an adjustable chair? You may check here http://www.chairsadvisor.com/fix-recliner-chair-mechanism/