Great Plains John Deere 750 20' Flat Fold Markers - Manual (Page 13)

3/20/2003 205-038M
11 Section 5 Troubleshooting
Disk Bearings
Type of Lubrication: NLGI Grade 2 or 3 grease lubricant
12436
Seasonally
Section 5
Troubleshooting
Problem Solution
Hydraulic marker functioning
improperly Check all hose fittings and connections for air and oil leaks.
Check tractor hydraulic oil level.
Check all bolts and fasteners.
If needle valve is plugged; open valve, cycle markers, and reset the needle valve.
Blade does not mark The maximum marker down float is limited by the slot in the pivot link. If the blade does
not drop down to follow depressions in the field, make sure the marker cylinder is fully
extended.