[header] How to maintain a lawn mower [title] Prior to starting, do a close visual inspection, cleaning out any debris, then : [substeps] Tighten or replace any loose nuts/bolts. Sand, prime and paint rusted structural parts. Replace or coat any bare or frayed wiring connections. 
[title] Remove the spark plug lead from the spark plug and move it away from cylinder head. [step] Always do this before attempting any repairs to a lawnmower that require turning the engine.