Husqvarna RZ4221TF Operator's Manual page 38

Action
At Least Once Each Year
Clean the engine's cooling air intake (25 hours)
Replace the air cleaner's foam pre-filter (300 hours)
Replace the air filter's paper cartridge
Change the engine oil (50 hours)
Replace the engine oil filter (100 hours)
Check/adjust the cutting height
Check/adjust the park brake (50 hours)
Clean/Change the spark plugs (100 hours)
Change the fuel filter (100 hours)
Check the engine valve clearance
SERVICE JoURNAl
38
Date, mtr reading, stamp, sign
q
q
q
q
q
q
q
q
q
q