Description
John Deere No 12-A Combine Operator Manual provides operating, setting-up, adjustment, lubrication and maintenance information for the John Deere No. 12-A Straight-Through Combine with a 66-inch cut, covering machines from serial number 12-72049 and up. It is intended to help operators prepare the combine, set the harvesting components correctly, adjust the machine for field conditions and maintain reliable performance.
This English-language operator’s manual covers the complete harvesting sequence, from identification, specifications and lubrication through field operation and combining different crops. The manual includes practical information on the reel, cutter bar, platform, feeder, cylinder, concave, straw rack, cleaning units, elevators, drives, belts and seasonal care.
WHAT THIS MANUAL CONTAINS
- Identification, specifications and data – machine identification information together with the specifications and operating data for the 66-inch-cut No. 12-A Straight-Through Combine.
- Lubrication – lubrication guidance for the combine and its working components.
- Lubrication charts – chart-based servicing information to help organise regular lubrication points and maintenance.
- Setting up and breaking in the new combine – preparation of a new machine before field work and procedures for its initial running-in period.
- Starting in the field – operating guidance for taking the combine into work and beginning harvesting operations.
- Factory settings for small-grain combining – approximate factory settings for combining small grain, providing a starting point for machine adjustment.
- Separator speed – information on selecting the proper speed of the separator for harvesting conditions.
- Combine operating adjustments – adjustment guidance for setting the combine correctly during operation.
- Reel operating adjustments – setting and operating the reel for effective crop gathering.
- Reel special equipment – information relating to special reel equipment and its use.
- Cutter bar and dividers – operation and adjustment of the cutter bar and crop dividers.
- Cutter bar and divider special equipment – additional equipment associated with the cutter bar and dividers.
- Platform and canvas – platform operation and canvas arrangement, including the working parts used to move crop into the feeder.
- Feeder canvas – information on the feeder canvas and its role in delivering crop to the threshing mechanism.
- Cylinder – cylinder operation and adjustment for threshing performance.
- Cylinder special equipment – supplementary cylinder equipment and related operating information.
- Concave rasp bar and grate – the concave, rasp bar and grate, including their adjustment for threshing and separation.
- Concave rasp bar and grate special equipment – additional equipment used with these threshing and separation components.
- Beater behind cylinder – operation of the beater positioned behind the cylinder.
- Deflector curtains behind the beater – the two rear deflector curtains and their function in directing crop material.
- Straw rack – straw-rack operation within the separation system.
- Cleaning units – adjustment and operation of the cleaning equipment used to separate grain from chaff and residue.
- Cleaning fan – fan operation and adjustment for the cleaning system.
- Cleaning shoe – cleaning-shoe operation and settings.
- Cleaning shoe special equipment – supplementary equipment associated with the cleaning shoe.
- Clean-grain and tailings elevators – operation of the elevators handling clean grain and tailings.
- Slip clutches – the purpose and operation of the combine’s slip clutches.
- Power line and main drive gear case – information on the power line and main drive gear case.
- V-belts and care of V-belts – belt operation, inspection and care to support dependable power transmission.
- Care of engine-equipped combines – specific care information for combines fitted with an engine.
- End-of-season care – procedures to follow when the harvesting season is over.
- Field operation – practical operating information for using the combine in field conditions.
- Fundamentals of combine harvesting – basic principles for achieving effective harvesting results.
- Combining various crops – operating considerations for harvesting different crop types.
MODELS COVERED
- John Deere No. 12-A Straight-Through Combine, 66-inch cut
MANUAL DETAILS
Manufacturer: John Deere
Machine type: Straight-through combine harvester
Manual type: Operator’s Manual
Model: No. 12-A, 66-inch cut
Serial range: Serial No. 12-72049 and up
Publication number: OMH3349
Pages: 152
Format: Digital PDF
Language: English
The John Deere No 12-A Combine Operator Manual is useful for operators carrying out routine preparation, lubrication, machine adjustment and field operation on the specified combine. Its coverage of threshing, separation, cleaning, crop flow, drive components, belts and seasonal storage brings the main operating and care information together in one reference.
WHAT HAPPENS AFTER PURCHASE?
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