Description
John Deere 6620 7720 8820 Operators Manual is an English-language operator’s manual for John Deere 6620, SideHill 6620, 7720 and 8820 combines. It is intended to help operators understand the machine, use the controls correctly, carry out pre-start inspections, operate the combine safely and keep the harvesting systems properly maintained.
This 354-page digital manual covers the operating instructions, safety information, servicing guidance, lubrication and maintenance requirements, harvesting systems, machine adjustments, troubleshooting and specifications associated with these combine models. It is useful both for day-to-day operation and for identifying the correct maintenance or adjustment procedure before work begins.
WHAT THIS MANUAL CONTAINS
- Safety – essential safety information for operating and servicing the combine, together with safety decals and reflector locations.
- Operator’s Station – information relating to the operator’s position, controls and instruments.
- Engine Break-In – guidance for the engine break-in period and the operating precautions associated with a new or rebuilt engine.
- Pre-Starting Checks – checks to complete before starting and operating the combine.
- Operating the Engine – engine starting, operation and related operating instructions.
- Driving the Combine – procedures and information for moving and controlling the combine during field operation.
- Transporting – guidance for preparing and moving the combine for transport.
- Lighting and Signals – lighting equipment and signal operation.
- Fuels and Lubricants – fuel and lubricant information required for correct machine servicing.
- Lubrication and Maintenance – routine lubrication points, maintenance operations and servicing requirements.
- Fundamentals of Combine Harvesting – operating principles and basic harvesting practices for achieving effective combine performance.
- Headers – header operation and related harvesting equipment information.
- Feeder House – operation and maintenance information for the feeder-house system.
- Separator – separator operation and associated combine harvesting functions.
- Grain Tank and Unloading Auger – grain storage in the tank and operation of the unloading auger.
- Engine Service – service information for the combine engine.
- Electrical System – electrical equipment and system information.
- Monitors – monitor operation and the information provided to the operator.
- Hydraulic System – hydraulic system operation and maintenance information.
- SideHill Levelling System – operation and servicing information for the levelling system fitted to SideHill combine models.
- Power Train – power-train operation and related maintenance information.
- Air Conditioner and Heater – cab heating and air-conditioning equipment.
- Troubleshooting – assistance with locating and correcting operating and system problems.
- Storage – procedures for preparing the combine for storage and returning it to work.
- Crime Prevention – precautions and information intended to help protect the machine.
- Specifications – technical specifications and reference information.
- Index – an alphabetical reference for locating subjects throughout the manual.
MODELS COVERED
- John Deere 6620 Combine
- John Deere SideHill 6620 Combine
- John Deere 7720 Combine
- John Deere 8820 Combine
MANUAL DETAILS
Manufacturer: John Deere
Machine Type: Combine harvester
Manual Type: Operator’s Manual
Publication / Manual Number: OMH133890 J7
Page Count: 354 pages
Format: Digital PDF
Language: English
The manual places safety and correct operating practice at the beginning, followed by the controls, starting checks and driving instructions needed for normal use. It then provides information on fuels, lubricants and maintenance before moving through the main harvesting systems, including the headers, feeder house, separator, grain tank and unloading auger.
System-specific sections cover the engine, electrical system, monitors, hydraulics, SideHill levelling system, power train and cab heating or air conditioning. The troubleshooting, storage, specifications and index sections provide useful reference material when diagnosing an operating problem, planning maintenance or preparing the combine for the next season. The John Deere 6620 7720 8820 Operators Manual is supplied as a printable PDF for convenient reference in the workshop, cab or service area.
WHAT HAPPENS AFTER PURCHASE?
After purchase you will instantly receive our download information file by email. Your manual will then be manually checked and sent to the email address used during checkout, usually within minutes and normally within 1 hour.
WHY BUY FROM AGRIMANUAL?
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