John Deere 6068 Lawn Mower User Manual


 
Lubrication and Maintenance
OURGP11,000007E –19–27JUL06–1/2
Lubrication and Maintenance Service Interval
Chart—Standard Industrial Engines
NOTE: The service intervals below are for standard
industrial engines. See details in Sections which
follow these charts.
Lubrication and Maintenance Service Intervals
500 Hour/ 2000 Hour/
Item Daily 12 Month 24 Month As Required
Check Engine Oil and Coolant Level
Check Fuel Filter/Water Bowl
Check Air Cleaner Dust Unloader Valve & Restriction Indicator
Gauge
a
Visual Walk Around Inspection
Check Lamps (4045DF/TF270)
Service Fire Extinguisher
Check Engine Mounts
Service Battery
Check Manual Belt Tensioner and Belt Wear
Change Engine Oil And Replace Oil Filter
b, c
Check Crankcase Vent System
Check Air Intake Hoses, Connections, & System
Replace Fuel Filter Elements
Check Automatic Belt Tensioner and Belt Wear
Check Engine Electrical Ground Connection
Check Cooling System
Coolant Solution Analysis-Add SCAs as required
Pressure Test Cooling System
Check Engine Speeds
Check Crankshaft Vibration Damper
(6.8 L Engines)
d
Flush and Refill Cooling System
e
Test Thermostats
Check and Adjust Engine Valve Clearance
a
Replace primary air cleaner element when restriction indicator shows a vacuum of 625 mm (25 in.) H2O.
b
During engine break-in, change the oil and filter for the first time before 100 hours of operation.
c
If the recommended engine oils, John Deere PLUS-50 or ACEA-E7, ACEA E6, ACEA E5 or ACEA E4, are not used, the oil and filter
change interval is reduced (see DIESEL ENGINE OIL AND FILTER INTERVALS chart). If diesel fuel with a sulfur content greater than 0.05%
is used, the oil and filter change interval is also reduced. 6-Cylinder engines with oil pan option codes 1907, 1908, and 1909 require the oil to
be changed at every 250 hours or less regardless of oil specification used.
d
Replace crankshaft damper every 4500 hours or 60 months, whichever occurs first.
e
If John Deere COOL-GARD is used, the flushing interval may be extended to 3000 hours or 36 months. If John Deere COOL-GARD is used
and the coolant is tested annually AND additives are replenished as needed by adding a supplemental coolant additive, the flushing interval
may be extended to 5000 hours or 60 months, whichever occurs first.
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