2009 Polaris Scrambler 500 4x4 2x4 factory service manual, Page 29Get this manual
MAINTENANCE
COMPRESSION TEST
NOTE: This Polaris 4-Stroke engine is equipped with an automatic decompressorCompression readings will vary in proportion to cranking speed during the testAverage compression (measured) is about 70-90 psi during compression testSmooth idle generally indicates good compressionLow engine compression is rarely factor in running condition problems above idle speedAbnormally high compression can be caused by decompressor malfunction, or worn or damaged exhaust cam lobesInspect camshaft and automatic decompression mechanism if compression is abnormally highA cylinder leakage test is the best indication of engine condition on models with automatic decompressionFollow tester manufacturer's instructions to perform cylinder leakage test(Never use high pressure leakage tester as crankshaft seals may dislodge and leak)
BATTERY MAINTENANCE
WARNING
Battery electrolyte is poisonousIt contains sulfuric acidSerious burns can result from contact with skin, eyes or clothingAntidote: External: Flush with waterInternal: Drink large quantities of water or milkFollow with milk of magnesia, beaten egg, or vegetable oilCall physician immediatelyEyes: Flush with water for 15 minutes and get prompt medical attentionBatteries produce explosive gasesKeep sparks, flame, cigarettes, etcawayVentilate when charging or using in an enclosed spaceAlways shield eyes when working near batteriesKEEP OUT OF REACH OF CHILDREN