Breaking-In Engine

Engine is factory filled with John Deere Break-In™ Engine Oil. During the break-in period, add John Deere Break-In Plus™ Engine Oil as needed to maintain the specified oil level.

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S660 and S670

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S680 and S690

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A - Dipstick

Operate the engine under various conditions, heavy loads with minimal idling, to help seat engine components properly.

If John Deere Break-In™ Engine Oil is used during the initial operation of a new or rebuilt engine, change the oil and filter at a maximum of 100 hours.

If John Deere Break-In™ Engine Oil is used, change oil and filter at a minimum of 100 hours and a maximum equal to interval specified for John Deere Plus-50™ II orPlus-50™ oil (see Diesel Engine Oil in the Fuels and Lubricants section for further information).

IMPORTANT: DO NOT add makeup oil until the oil level is BELOW the ADD mark on dipstick. John Deere Break-In Plus™ Oil should be used to make up any oil consumed during this period.

DO NOT use Plus-50™ or Plus-50™ II Engine Oil during break-in period of a new engine or engine that has had a major overhaul. These oils will not allow a new or overhauled engine to properly wear during this break-in period.

Check engine oil level frequently during break-in period. If oil must be added during this period, John Deere Break-In Plus™ Oil is preferred.

IMPORTANT: DO NOT fill above the FULL mark. Oil level anywhere within the cross-hatch marks are considered in the acceptable operating range.

NOTE: Some increase in oil consumption may be expected when low viscosity oils are used. Check oil levels more frequently.

Avoid prolonged periods of engine idling or sustained maximum load operation. If engine idles longer than 5 minutes, stop engine.

After break-in period, change engine oil and replace engine oil filter. Fill crankcase with John Deere Plus-50™ II, John Deere Plus-50™ or seasonal viscosity grade oil (see Diesel Engine Oil in Fuels and Lubricants section for oil recommendations).

NOTE: Verify that dipstick is screwed or pushed completely into housing before removing to check oil level.

Remove dipstick (A) and check oil level daily. Oil level should be between ADD and top of cross-hatch area on dipstick. If oil level is below ADD mark, add oil as needed (see Fuel and Lubricants section for oil recommendations).

Watch for leaks. Do not operate engine when oil level is below ADD mark on dipstick.

If air temperature is below -10 °C (14°F) use an engine block heater (If Equipped).

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A - Green Zone (Normal Operation)

Temperature indicator should read in green zone (A) during normal operation.

IMPORTANT: Prevent possible engine damage. Do not shut OFF engine if temperature warning light comes ON or bars enter red zone. Shutting OFF engine causes coolant temperature to rise even higher, resulting in machine damage. Reduce load and run engine at a slower speed to lower coolant temperature. Unless temperature drops quickly, stop engine and determine cause before resuming operation.

Watch temperature gauge closely. If gauge moves into red zone, reduce load on engine and determine cause before resuming operation.

CAUTION: Shut OFF engine, set park brake and remove key. Avoid being scalded when opening surge tank cap. Never open cap when engine is hot. Open cap slowly to relieve pressure.

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A - Surge Tank Cap

B - Max Cold Line

Check coolant level periodically and watch for signs of leaks. Remove surge tank cap (A) and pour coolant into surge tank and fill to Max Cold line (B).

NOTE: Coolant level must be between Max Cold and Min Cold lines. Add coolant as needed if coolant is below Min Cold line.