Ariens Pro 21 Owners Manual - Page 19

REPLACE OIL FILTER Replace oil filter every 100 hours of use or every season. 1. Change engine oil. 2. Clean around filter. 3. Turn filter counterclockwise to remove (Figure 14). 4. Apply a thin coat of oil onto seal of new filter. 5. Install new filter and hand tighten securely. CHECK ENGINE COOLING WARNING: HOT SURFACES can cause death or serious injury. DO NOT TOUCH parts which are hot from operation. ALWAYS allow parts to cool. To prevent overheating, air must circulate freely around the cooling fins, cylinder head and block. Every 100 hours of operation or yearly (more often if conditions require) remove blower housing and clean cooling fins. See engine manual for instructions. CHECK MUFFLER Check muffler for debris, cracks, wear, or other damage. Figure 14 GENERAL LUBRICATION NOTE: The mower transmission is lubricated and sealed at the factory. It should need no routine lubrication. If the transmission leaks grease, bring the mower to your local Ariens dealer for repair. CHECK SPARK PLUG Spark plug should be replaced every 100 hours of operation or each year. NOTE: Loose spark plug wire terminals can cause sparking. Replace terminal if damaged. CAUTION: Replace worn-out mufflers immediately. Continued use could result in fire or explosion. REPLACE ENGINE/BLADE CONTROL CABLE Every 500 hours of operation, have your authorized Ariens dealer replace the Engine/Blade Control Cable on your mower. GB - 19