AGCO Gleaner S77 User Manual

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Quick Reference Guide

S67/S68/S96 • S77/S78/S97 • S88/S98 Models

It is YOUR responsibility to read and understand the safety section in your

Operator’s Manual and the manual for all attachments before operating your

machine. Remember YOU are the key to safety. Good safety practices not only

protect you, but also the people around you.

Study the features in your Operator’s Manual and make them a working part of

your safety program. Keep in mind that the safety section in your Operator’s

Manual is written only for this type of machine. Practice all other usual and

customary safe working precautions, and above all REMEMBER - SAFETY IS

YOUR RESPONSIBILITY. YOU CAN PREVENT SERIOUS INJURY OR

DEATH.

Questions and Answers:

K
kenneth33Aug 21, 2025
Why is there foreign material in the clean grain of my AGCO Farm Equipment?
- Y
  Yvette BriggsAug 21, 2025
  Foreign material in clean grain may be caused by several factors. The engine may not be running at the correct speed, so adjust the engine high idle to the proper speed. Check for slipping belts in the separator drive, fan drive, or cleaning shoe drive; inspect the drives, replace any damaged belts, and adjust idlers as needed. Ensure the fan inlet screen is clean and properly installed. Other causes include uneven feed to the cylinder, insufficient material entering the cylinder, using the incorrect chaffer for the crop, insufficient air blast from the cleaning fan (increase the fan choke setting), sieve or chaffer openings that are too wide or uneven, the need for a finishing sieve, excessive tailings, or an overloaded cleaning shoe due to over threshing.
M
Maurice WardAug 26, 2025
Why are sieves plugging with straw and chaff in my AGCO Gleaner S77?
- M
  Mrs. Maria FergusonAug 27, 2025
  Sieves plugging with straw and chaff can be due to insufficient air blast from the cleaning fan, so increase the fan choke setting. The sieve opening may be too wide, so consider increasing air, then decrease the sieve opening in 0.06” (1.6 mm) increments. Decrease the chaffer opening in 0.06” (1.6 mm) increments. Ensure all fan inlet screens are properly installed. Allow crop to pass through and clear the machine before disengaging the separator. The incorrect chaffer may be used for the crop being harvested. Inspect the fan, fan choke, shoe air duct, and splitter location to ensure correct air pattern.
V
victoriamoralesAug 27, 2025
What causes grain loss from the cylinder in AGCO Farm Equipment and how to prevent it?
- T
  Thomas ButlerAug 28, 2025
  Grain loss from the cylinder can be caused by the engine not running at the correct speed, so adjust the engine high idle to the proper speed. There may be insufficient material entering the cylinder, so increase ground speed for more intake of material (corn only). Cylinder speed may be too high or too low; try various cylinder speeds to determine the optimal speed for threshing and separating. There may be insufficient threshing at the concave, so decrease concave clearance. If grain is not coming out of the cage, install two extra reverse cylinder bars. Excessive loss out of the discharge can be resolved by removing helicals bolted to the rear separator door (milo & high moisture corn).
P
Paul LiAug 31, 2025
Why is my AGCO Farm Equipment cylinder vibrating and how can I fix it?
- S
  Scott PetersonAug 31, 2025
  Cylinder vibration can be caused by dirt and material stuck to the inside of the cylinder bars, so clean the material from inside of the cylinder bars. Vibration can also be caused by the cylinder drive. Place the cylinder drive gearbox in neutral and operate the cylinder drive through its variable speed range to determine if the vibration is still present. Check the V/S drive and driven sheaves for condition and balance, the V/S cylinder drive belt, the cylinder drive torque sensor, and the cylinder drive gearbox bearings and gears.
N
Nicole ClarkSep 1, 2025
What causes crop bunching on the cutter bar of AGCO Gleaner S77?
- D
  Deborah PierceSep 1, 2025
  Crop bunching on the cutter bar can occur if the reel is too high, so lower the reel. The reel may be too far forward, so set the reel back. If the reel speed is too slow, increase the reel speed. Remove dirt, gum, or rust from a sticky header pan. The conveyor may be too high, so lower the header conveyor. Replace worn conveyor flighting. Adjust conveyor fingers as close to the header bottom as possible if they are retracting too early. Check the header drive if the conveyor is not operating at the recommended speed.
C
Christine DanielsSep 5, 2025
How to address shattering of grain ahead of cutter bar with AGCO Gleaner S77 Farm Equipment?
- J
  James RodriguezSep 5, 2025
  Shattering of grain ahead of the cutter bar may occur if the reel speed is not coordinated with the ground speed, so change the reel speed to coordinate with the ground speed. Decrease ground speed if it is too fast for the condition of the crop. Raise the reel if it is too low.
R
Richard DunnSep 7, 2025
What causes excessive tailings in AGCO Gleaner S77?
- A
  Amy RiveraSep 7, 2025
  Excessive tailings can be caused by insufficient sieve opening, so increase the sieve opening in 0.06” (1.6 mm) increments. Increase the fan choke setting if there is insufficient air blast from the cleaning fan. Consider increasing air, then decrease the chaffer opening in 0.06” (1.6 mm) increments if the chaffer opening is too wide. Refer to remedies listed under MATERIAL LODGING OUTSIDE OF CAGE condition if the cleaning shoe is overloaded due to over threshing.
T
Thomas CantuSep 10, 2025
What can cause loss of grain heads and cut crop at the cutter bar of AGCO Farm Equipment?
- C
  Chelsey RichardsonSep 10, 2025
  Loss of grain heads and cut crop at the cutter bar can be due to the reel not being low enough, so lower the reel. The conveyor clearance may be too high from the header bottom, so lower the conveyor. Adjust the fingers close to the header bottom if the conveyor fingers are retracting too early. Lower the header if cutting with the header is too high, resulting in cutting stalks too short for proper delivery. Increase the speed of the reel if the reel speed is too low. Position the reel closer to the header conveyor if the reel is incorrectly positioned on the reel arms. Replace conveyor flighting if the conveyor flights are worn.
J
Jodi JamesSep 12, 2025
Why is my AGCO Gleaner S77 reel wrapping in tangled and weedy crops, and how can I prevent it?
- R
  Renee BaileySep 12, 2025
  Reel wrapping in tangled and weedy crops can be caused by an incorrect location of the pickup reel, so place the reel ahead and down. Reduce the speed of the reel if the reel speed is too fast. Adjust the tine pitch if the pickup reel tines are pitched too much to the rear. Replace or straighten tines if the pickup reel tines are bent. Install or adjust long dividers if the crop is not divided at the header ends. Install reel end shields (Flex header). Install Reel Divider Kit #700962402 (Dynaflex). Raise the reel to reduce the amount of straw gathered by the reel if the reel ends are wrapping.

AGCO Gleaner S77 Specifications

General

Brand	AGCO
Model	Gleaner S77
Category	Farm Equipment
Language	English

Summary

Combine Setup Procedures

Cereal Grain Setup

Initial combine setup parameters for wheat, oats, and barley.

Corn & Sorghum Setup

Initial combine setup for dry, high moisture corn, and sorghum.

Soybean & Oilseed Setup

Initial combine setup for soybeans and canola/rapeseed.

Specialty Crop Setup

Initial combine setup for sunflowers, flax, grass seed, alfalfa, hemp, clover, and rye.

Troubleshooting Guide

Header Troubleshooting

Common issues and solutions for the combine header.

Component & Performance Troubleshooting

Issues with feed conveyor, processor, grain quality, and loss.

Grain Loss Calculation Methods

Quick Check Grain Loss Estimation

Method for estimating grain loss per square foot.

Advanced Grain Loss Measurement

Detailed rotor and shoe grain loss calculation procedures.

Crop Harvest Data

Payable Moisture & Density Chart

Chart of standard payable moisture and density for various crops.

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