In most cases, the drive belt is broken or may simply be slipping, preventing the mower from being propelled. Replace or tighten the belt to resolve the problem. The drive clutch may also be out of adjustment.
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Located in Jacksonville, Fla, Frank Whittemore has been a writer and content strategist for over 15 years, providing corporate communications services to Fortune 500 companies. Whittemore writes on topics that stem from his fascination with nature, the environment, science, medicine and technology.