Maintenance G 50/G 70/G 85wc_tx000484gb.fm 504.5 Engine LubricationCheck engine oil daily before starting engine.DO NOT operate engine if oil level is below ADD mark on dipstick.Always keep oil level within the crosshatch pattern or “full” mark ondipstick.Change oil after first 100 hours of operation and every 250 hoursthereafter. Refer to the engine manufacturer’s Operator’s Manual forlubrication specifications.Break-in Service4.5.1 This engine is factory-filled with John Deere Engine Break-in Oil.Operate the engine at heavy loads with minimal idling during thebreak-in period. DO NOT exceed 100 hours of operation with break-inoil.4.5.2 If the engine has significant operating time at light load, or makeup oilis required in the first 100 hour period, a longer break-in period may berequired. In these situations, an additional 100 hour break-in period isrecommended using a new change of John Deere Engine Break-In Oiland a new John Deere oil filter.NOTICE: DO NOT add makeup oil until the oil level is BELOW theADD mark on dipstick. John Deere Engine Break-In Oil (TY22041)should be used to make up any oil consumed during the break-inperiod.4.5.3 During the first 20 hours, avoid prolonged periods of no load orsustained maximum load operation. If engine is to run for longer than5 minutes without a load, shut unit down.4.5.4 After the first 100 hours, change engine oil and replace engine oil filter.Fill crankcase with seasonal viscosity grade oil.