Husqvarna RZ3016 Operator's Manual page 52

Action
After 5-10 Hours
Change the engine oil
Action
25-Hour Service
Check the fuel pump's air filter
Sharpen/Replace mower blades if required
Check the tire pressures
Check battery cables
Lubricate according to lubrication chart
Check/clean the engine's cooling air intake
Clean the air cleaner's pre-filter (foam)
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