2004 Polaris Sportsman 700 EFI ATV Service Manual, Page 27Get this manual
MAINTENANCE
VENT LINES
Check fuel tank, oil tank, carburetor, battery and transmission vent lines for signs of wear, deterioration, damage or leakageReplace every two yearsBe sure vent lines are routed properly and secured with cable tiesCAUTION: Make sure lines are not kinked or pinched
combustion chamber if compression is abnormally highA cylinder leakdown test is the best indication of engine conditionFollow manufacturer's instructions to perform cylinder leakage test(Never use high pressure leakage testers, as crankshaft seals may dislodge and leak)Cylinder Compression Standard: 150-170 PSI Cylinder Leakdown Service Limit 10 (Inspect for cause if leakage exceeds 10)
FUEL FILTER