Check all the air release valves to make sure they are working. Replace any broken pressure gages. Check all valves to make sure they open and close properly. Repair or replace damaged electrical cables and controls, tighten nuts and bolts, inspect welds and stress points for cracks. The sprinkler system should be thoroughly checked for vandalism and any other winter damage.
Many machines require that the grease in all gearboxes be drained and replaced.
If this is not the case, check all gearboxes for moisture accumulation. Drain off any moisture and check that the proper amount of grease is in each. All fittings should be greased to push out grease that may have hardened during the winter. Check inflation pressure on all tires. Improper inflation can cause tire breakdown, place stress on the drive system, and aggravate wheel track problems on some soils.