12. Malfunction and remedy

Malfunction Cause or remedy Poor chop quality 1.Check chopper unit: • Check knives, if necessary grind or replace knives. • Check shear bar knife, replace if necessary. • Check adjustment of shear bar knives, correct adjustment if necessary. 2.Check speed setting between front attachment and forage harvester: • See Adjusting the rotation speed with one gearbox (JAGUAR 900 - 830 Type492, JAGUAR 880 - 820 Type491), page58 or • see Adjusting the rotation speed with two gearboxes (JAGUAR 900 - 830 Type492, JAGUAR 880 - 820 Type491), page60 or • see Adjusting the rotation speed with two gearboxes (JAGUAR 900 - 830 Type493), page62. • If necessary replace 18-tooth sprocket with 17-tooth or 13-tooth sprocket –see 17-tooth and 13-tooth sprockets, page65. 3.Check function of intake auger –see Intake auger spring tension, page85. 4.Change length of cut if necessary. 5.Install knife support (order no. 090620.1) in forage harvester.

Malfunction Cause or remedy Crop intake is incorrect 1.Adjust comb bars –see Adjusting comb bars, page63. 2.Check function of intake auger –see Intake auger spring tension, page85. 3.Clean dirt and contamination from feeder housing. 4.For down maize: • Detatch the piston guide tube –see Machine overview, page4. • Approach the crop at right angles to the down direction –see Harvesting down maize, page64. 5.The following optional equipment will also help: • Down maize cone –see Down maize cones (D030070), page65, • Down maize tips –see Down maize tips, page65, • Cone lining –see Increasing drum diameter, page66, • Increase in height of deflector bar –see Raised deflector bracket (D03 0060), page66.