John Deere 6068 Lawn Mower User Manual


 
Contents
Page Page
Auxiliary Gear Drive Limitations ............19-17 Checking Crankshaft Vibration Damper
Generator Set (Standby) Applications........19-17
(6-Cylinder Engine Only).................35-2
Flushing and Refilling Cooling System ........35-3
Engine Operation- 4.5 L “270” Engines
Testing Thermostats Opening Temperature ....35-6
Normal Engine Operation ..................20-1
Check and Adjust Valve Clearance (All
Break-In Service.........................20-2
Engines Except 4045HF475 And
Auxiliary Gear Drive Limitations .............20-3
6068HF475) ..........................35-9
Generator Set (Standby) Power Units.........20-4
Check and Adjust Valve Clearance
Starting The Engine ......................20-4
(4045HF475 And 6068HF475 Engines).....35-12
Cold Weather Starting ....................20-6
Test Glow Plugs for Continuity
Warming Engine.........................20-8
(4045HF475 And 6068HF475 Engines).....35-15
Avoid Excessive Engine Idling ..............20-9
Stopping the Engine .....................20-10
Service as Required
Using a Booster Battery or Charger .........20-11
Additional Service Information ..............40-1
Do Not Modify Fuel System ................40-2Lubrication and Maintenance
Observe Service Intervals..................21-1
Adding Coolant..........................40-3
Use Correct Fuels, Lubricants, and Coolant ....21-1
Replacing Single Stage Air Cleaner ..........40-5
Lubrication and Maintenance Service
Replacing Axial Seal Air Cleaner Filter
Interval Chart—Standard Industrial Engines . . 21-2
Element .............................40-6
Lubrication and Maintenance Service
Replacing Radial Seal Air Cleaner Filter
Interval Chart—Generator (Standby)
Element .............................40-8
Applications ..........................21-4
Replacing Fan and Alternator Belts .........40-10
Checking Fuses ........................40-11
Lubrication & Maintenance/Daily
Checking Air Compressors ................40-11
Daily Prestarting Checks ..................25-1
Bleeding the Fuel System (Engines With
Electronic Fuel Systems And Bosch VP44
Lubrication & Maintenance/500 Hour/12 Month
Pump)..............................40-12
Servicing Fire Extinguisher .................30-1
Bleed the Fuel System (Engines with
Checking Engine Mounts ..................30-1
Electronic Fuel Systems and Stanadyne DE10
Servicing Battery ........................30-2
Pump)..............................40-14
Manual Belt Tensioner Adjustment ...........30-4
Bleed the Fuel System (Engines with
Manual Belt Tensioner Adjustment Using
Electronic Fuel Systems and Denso High
Belt Tension Tool (Alternate Method
Pressure Common Rail) (4045HF475,
For Engines Without Auxiliary Drive)........30-5
6068HF475) .........................40-17
Changing Engine Oil and Replacing Filter .....30-7
Checking Crankcase Vent System ...........30-9
Bleed the Fuel System (4045DF270,
Checking Air Intake System ...............30-11
4045TF270) .........................40-19
Replacing Fuel Filter Elements.............30-12
Checking Belt Tensioner Spring Tension
Troubleshooting
and Belt Wear (Automatic Tensioner) ......30-14
General Troubleshooting Information .........45-1
Checking Engine Electrical Ground
Precautions For Welding On Engines
Connections .........................30-16
Equipped With Electronic Engine Control Unit
Checking Cooling System.................30-16
(ECU) ...............................45-2
Replenishing Supplemental Coolant
Precautions for Electrical System When
Additives (SCAs) Between Coolant
Steam Cleaning Engine .................45-2
Changes ............................30-17
Engine Wiring Layout (Electronic Fuel
Testing Diesel Engine Coolant .............30-19
System With Stanadyne DE10 Injection
Pressure Testing Cooling System...........30-20
Pump)...............................45-3
Checking and Adjusting Engine Speeds ......30-21
Engine Wiring Layout (Electronic Fuel
System With Bosch VP44 Injection Pump) . . . 45-4Lubrication & Maint./2000 Hour/24 Month
Adjusting Variable Speed (Droop) 4.5
Continued on next page
L “270” Generator Set Engines Only........35-1
ii
080706
PN=2