DR Power Grader, Safety & Operating Instructions Manual, Page: 21 / 32

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21
Chapter 5: Troubleshooting
Most problems are easy to fix. Consult the Troubleshooting Table below for common problems and their solutions. If you
continue to experience problems, contact us at www.DRpower.com or call toll-free 1-800-DR-OWNER (376-9637) for support.
Troubleshooting Table
S
YMPTOM
P
OSSIBLE
C
AUSE
The wheels on the tow
vehicle spin during the
grading operation. 
The Scarifying Teeth are set too low, causing too large a section of surface to
be removed. Raise the height of the Scarifying Tooth Bar to improve traction.

There is too much weight in the Weight Tray. Remove some of the weight.

The Tow Vehicle is not adequate for your application.
The Scarifying Teeth are
not digging properly

The angle of the Tow Bar is not set correctly. Adjust the Tow Bar up for better
grading or adjust the Tow Bar down for better scarifying.

There is not enough weight for the hardness of the surface material. Add
weight (no more than 80 pounds) to the Power Grader to improve
performance

The Wheels are adjusted not lifted all the way up. Raise the Wheels
completely when grading or scarifying.
The Mold Board cannot
be rotated to alternate
angle settings 
The rear Tow Bar 1/2" Bolt is installed wrong. The Bolt head must be under
the Crossmember to allow room to rotate the Mold Board.

The lower hardware is too tight. Loosen the lower Bolt and Locknut to allow
the Mold Board to rotate during adjustment. Tighten all hardware when
angle adjustment is done.
Before performing any maintenance, you must first shut off the tow vehicle, remove the key and set the parking brake.