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GENERAL
PROBLEM PROBABLE CAUSES AND SOLUTIONS
Bed Chain and Yoke 1. Engine RPM not up to max
Wheel will not go forward 2. Flow Controls not opened up.
3. Moisture in tether box switch.
4. Low RPM on Dyna-Par RPM set to high.
5. Hyd. lines loose or broken.
6. Check pump pressure.
7. Check solenoid pressure.
8. Flow controls not working properly.
9. Check drive motor.
10. Hyd. valve shut off.
Yoke will not lift up 1. Yoke pivot mounts need to be cleaned of tightly packed wood.
2. Hood is bent and has jammed yoke.
3. Switch in tether box not functioning properly.
4. Check wiring and voltage to solenoid.
5. Hydraulic lines loose or broken.
6. Cylinder rod bent or obstructed.
7. Check pump pressure.
8. Check solenoid pressure.
Machine will not start 1. Check all emergency shut down buttons.
2. Fuel line valve shut off.
3. Power to start switch.
4. Check all motor uid levels.
ELECTRICAL
NOTE: Your Morbark equipment may have an electronic engine and electronic controls. These sensitive controls have many
electrical grounds throughout the machine. These grounds must be clean for the electronics to work properly. When a
problem with the electrical system is suspected, rst make sure all grounds are clean, dry and have a good connection before
continuing troubleshooting. These grounds are located in electrical junction boxes, dash panels, control boxes and near the
starter. Refer to all electrical schematic provided with your machine for individual ground locations.
TROUBLESHOOTING
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