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Hose clamps are left loose to extend life of gaskets and fittings. WARNING Oil cap gasket before using and lubricate weekly so the gasket will seal properly and prevent chemical leaks. Oil check valve and maintain breather hole clear of debris. Your failure to oil may can cause the tank to collapse and crack due to vacuum created by pump lubricate with "3 and 1" oil. IMPORTANT Before using, oil cap gasket, felt pump washer, and check valve, and maintain breather hole clear of debris. Your failur