2008 Polaris ATV Sportsman 300 400 H.O. Service Manual, Page 14Get this manual
MAINTENANCE Item Hours Choke Cable Carburetor air intake ductsintake flange Drive belt Cooling System (if applicable) Engine Oil Change 50 50 50 50 100 Maintenance Interval (whichever comes first) Calendar 6M 6M 6M 6M 6M 6M 6M 12 12 12 12 12 12M 12M 12M 12M 12M 12M 24M 36M Miles (KM) 500 (800) 500 (800) 500 (800) 500 (800) 1000 (1600) 1000 (1600) 1000 (1600) 1000 (1600) 1000 (1600) 1000 (1600) 1000 (1600) 1000 (1600) 1000 (1600) 1000 (1600) 1000 (1600) 1000 (1600) 1000 (1600) 1000 (1600) 2000 (3200) 3000 (4800) Remarks
Inspect; adjust; lubricate; replace if necessary Inspect ducts for proper sealingair leaks Inspect; adjust; replace as needed Inspect coolant strength seasonally; pressure test system yearly Perform break-in oil change at 20 hours or after one month of operation; change more frequently during cold weather operation Replace with oil change Inspect routing and condition Inspect; adjust Check for leaks at tank cap, lines, fuel valve, filter, pump, carburetor, replace lines every two years Inspect; clean external surfaces Inspect for leaks Inspect Inspect Inspect; replace as needed Inspect Inspect for wear, routing, security; apply dielectric grease to connectors subjected to water, mud, etcInspect;clean; replace worn parts Inspect; replace as needed Change every two years Clean out Adjust as needed Inspect periodically; adjust when parts are replaced Adjust as needed