DR 372111, Safety & Operating Instructions Manual

Page: 29 / 44

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29
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 DR Power Equipment for support.
Troubleshooting Table
S
YMPTOM
P
OSSIBLE
C
AUSE
/F
IX
Flywheel won’t turn. 
The Flywheel may be jammed. Immediately disengage the PTO and
stop the tractor engine. Remove any built-up debris from the Chipper
Hopper Inlet and Discharge Chute.

Check the Drive Pulley alignment and adjust if necessary.

Replace the Drive Belt or reinstall if the Belt has come off the pulleys.

Turn the Flywheel with a wooden stick to be sure it turns freely. If the
Flywheel still won’t turn, call
1-800-DR-OWNER (376-9637) for
assistance.
The Belt frays or rolls
over the Drive Pulley.

The Drive Pulley groove may have a nick in it. File off any nicks on the
Pulley.

Check the Drive Belt for wear and hard spots.

The Drive Belt may be stretched; replace it. See page 27.

The Pullleys may be misaligned. See Chapter 5.

If the Drive Belt still rolls off the Drive Pulley, call 1-800-DR-OWNER
(376-9637) for assistance.
Chipping action seems
too slow or flywheel
stalls. 
The PTO speed is too slow causing the belt to slip. Run the PTO at
540 RPM.

Check for loose or damaged Drive Belt; replace as needed. See
Chapter 5.

Check for a dull or damaged Knife; sharpen or replace the Knife. See
Chapter 5.
Disengage PTO, shut down the tractor engine, remove the key, wait for all moving parts to come to a complete stop, disconnect
the PTO shaft from the tractor, then wait 5 minutes before performing any maintenance procedure or inspection on the chipper.