We have one lawn tractor,three push mowers,and a string trimmer- And right now,only the lawn tractor runs.....The three push mowers are all different makes,naturally,no interchangeability on parts.Our string trimmer is missing the most valuable asset:The pull starter.It was taken off late last summer and repaired,it was never put back on,and is MIA,like Amelia Earhart.Will probably cost more to replace the pull starter unit,than the whole thing cost new............Well,at least our lawn tractor runs well.....When we got married,I inherited all these projects,and I cannot use the three mowers to get one running.........Seems about like a normal siruation......