Some tips for repairing underground sprinkler systems include digging along the buried lines to replace sections of pipe and cleaning or replacing sprinkler heads. Homeowners can study their systems' symptoms to determine which repairs to make.
Pipe leaks usually cause overly wet areas of the lawn or a series of faulty sprinklers, so homeowners should dig down to their pipes in problem areas. Once they find a leak or break, they can cut out damaged pipe and replace it with a coupling. Single faulty heads might spray inconsistently or not rise, and homeowners should dig around them and twist them off their risers. Then, they can replace them or clean and reinstall them.