TABLE OF CONTENTSJH Series Operation Manual iii12/05CHECKING THE ENGINE AFTER OPERATION .... 58PERIODIC MAINTENANCE........................................... 59INTRODUCTION...................................................... 59SAFETY PRECAUTIONS ........................................ 59PRECAUTIONS ....................................................... 61The Importance of Periodic Maintenance .......... 61Performing Periodic Maintenance ..................... 61The Importance of Daily Checks ....................... 61Keep a Log of Engine Hours and Daily Checks 61Yanmar Replacement Parts .............................. 61Tools Required .................................................. 61Ask Your Authorized Yanmar Marine Dealer orDistributor for Help............................................. 61EPA MAINTENANCE REQUIREMENTS................. 63EPA Requirements for USA and OtherApplicable Countries.......................................... 63EPA Requirements ............................................ 63Installation of Exhaust Sampling Port ................ 65PERIODIC MAINTENANCE SCHEDULE ................ 66PERIODIC MAINTENANCE PROCEDURES .......... 70Daily Checks...................................................... 70After Initial 50 Hours of Operation ..................... 71Every 50 Hours of Operation ............................. 76Every 250 Hours of Operation ........................... 79Every 500 Hours of Operation ........................... 87Every 1000 Hours of Operation ......................... 87TROUBLESHOOTING ................................................... 89SAFETY PRECAUTIONS ........................................ 89TROUBLESHOOTING AFTER STARTING ............. 89TROUBLESHOOTING INFORMATION................... 90TROUBLESHOOTING CHART................................ 91LONG-TERM STORAGE ............................................... 93PREPARE ENGINE FOR LONG-TERM STORAGE 93DRAIN SEAWATER COOLING SYSTEM ............... 94RETURNING THE ENGINE TO SERVICE .............. 96