I have a manual transmission unit about 10 years old that has performed very dependably until the last couple of mowings. It stopped in the middle of mowing last week. I turned off the switch and jiggled the connections, checked the battery connections, etc. It restarted but today it did the same thing. Twice I performed the same procedure. Both times it started up and I was able to finish the lawn mowing. The last time I left the switch in the on position and heard a clicking noise which repeated ever few seconds. Could one of the relays be shot? I didn't notice any wires with worn insulation rubbing. I don 't think the safety cut off switch in the seat is defective and the gas lines seem clean.
Any thoughts? Thanks.