John Deere No. 12-A Straight-Through Combine Operator’s Manual

Description

John Deere No 12 A Operator Manual for the No. 12-A Straight-Through Combine with 66-inch cut provides operating, setting, adjustment, lubrication and maintenance information for machines from serial number 12-107212 and up. It is intended to help operators prepare the combine, set the harvesting equipment correctly, operate it in the field and keep the machine in dependable working condition.

This English-language manual covers the complete operating sequence of the combine, from identification, specifications and initial set-up through crop harvesting, operating adjustments and end-of-season care. The contents include detailed coverage of the reel, cutter bar, platform, feeder, cylinder, concave, straw rack, cleaning units, elevators, drives, belts and slip clutches, together with guidance for combining various crops.

WHAT THIS MANUAL CONTAINS

• Identification View – Identifies the main components and operating areas of the John Deere No. 12-A Straight-Through Combine.
• Specifications and Data – Reference information for the 66-inch-cut combine and its operating equipment.
• Lubrication – Lubrication points and servicing guidance to help maintain the combine during operation.
• Setting-Up and Breaking-In the New Combine – Instructions for preparing a new or newly installed combine for service and carrying out the initial running-in period.
• Starting in the Field – Operating guidance for getting the combine working correctly at the start of field operations.
• Approximate Factory Settings for Small Grain – Initial settings intended to assist with preparing the combine for small-grain harvesting.
• Proper Speed of Separator – Guidance on separator speed selection for effective threshing and crop handling.
• Combine Operating Adjustments – General adjustments used to match the combine’s operation to field and crop conditions.
• Reel Operating Adjustments – Reel positioning and operating adjustments for controlled crop presentation to the cutter bar and platform.
• Reel Special Equipment – Information concerning optional or special reel equipment.
• Cutter Bar and Dividers – Operation and adjustment of the cutting equipment and crop dividers.
• Cutter Bar and Divider Special Equipment – Coverage of special equipment associated with the cutter bar and dividers.
• Platform and Canvas – Platform components and canvas arrangements used to receive and convey cut crop.
• Feeder Canvas – Feeder-canvas operation and adjustment information.
• Cylinder – Cylinder operation and settings for threshing the crop.
• Cylinder Special Equipment – Information on special cylinder equipment and related operating arrangements.
• Concave Rasp Bar and Grate – Concave rasp-bar and grate settings and their relationship to threshing performance.
• Concave Rasp Bar and Grate Special Equipment – Details relating to special concave, rasp-bar and grate equipment.
• Beater Behind Cylinder – Operation and adjustment of the beater following the cylinder.
• Deflector Curtains Behind the Beater – Position and function of the two deflector curtains at the rear of the beater.
• Straw Rack – Straw-rack operation and adjustment for separating and handling threshed material.
• Cleaning Units – General cleaning-system operation and adjustment.
• Cleaning Fan – Fan operation and settings for cleaning the grain stream.
• Cleaning Shoe – Cleaning-shoe operation and adjustment.
• Cleaning Shoe Special Equipment – Information on special cleaning-shoe equipment.
• Clean Grain and Tailings Elevators – Operation and care of the elevators handling clean grain and return material.
• V-Belts and Care of V-Belts – V-belt operation, inspection and maintenance guidance.
• Slip Clutches – Information on slip-clutch operation and protection of the combine drive systems.
• Power Line and Main Drive Gear Case – Main power transmission and gear-case information, including care and operation.
• Care of Engine-Equipped Combines – Maintenance guidance for combines fitted with an engine.
• When the Season Is Over – Procedures for caring for and storing the combine after harvesting.
• Field Operation – Practical guidance for operating the combine during harvesting work.
• Fundamentals of Combine Harvesting – Basic principles for achieving effective threshing, separation and cleaning.
• Combining Various Crops – Operating considerations for harvesting different crop types.

MODELS COVERED

John Deere No. 12-A Straight-Through Combine with 66-inch cut.

MANUAL DETAILS

Manufacturer: John Deere
Model: No. 12-A Straight-Through Combine
Machine Type: Combine harvester
Manual Type: Operator’s manual
Publication Number: OMH3252
Serial Range: Serial No. 12-107212 and up
Pages: 148
Format: Digital PDF
Language: English

The John Deere No 12 A Operator Manual is a practical reference for operators setting up, adjusting, using and maintaining the No. 12-A combine. Its coverage of harvesting adjustments, threshing and cleaning equipment, drive components, lubrication and seasonal care makes it useful both when preparing the machine for field work and when maintaining it between seasons.

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?

• Established in 1995 supplying technical manuals
• Digital PDF manuals for agricultural and construction machinery
• Large archive including rare and discontinued manuals
• Worldwide service
• Manual orders checked before delivery