DR Power 16.50 Pro - Manual (Page 42)

38 16.50 PRO DR ® RAPID-FEED™ CHIPPER
Checking and Adjusting the Knife to Wear Plate Gap
When you replace the Knife you must check and set the clearance between the Knife and Wear Plate. Set
this clearance or gap to 1/16" by using the Gap Tool that is supplied with the Chipper and with a new
Knife kit. If the gap between the Wear Plate and the Knife is not set correctly, you will have excessive
vibration when chipping and the Knife will seem to be dull. The Wear Plate should have a square edge
and be free of dents or gouges. The Wear Plate can be hand sharpened (see steps below). Be careful
not to overheat it during the sharpening process. This will change the characteristics of the steel and you
will then have to replace the Wear Plate.
Tools Needed:
• Gap Gauge (provided with Chipper)
Checking the Knife to Wear Plate Gap
1. Remove the Hopper (See “Inspecting the Chipper
Knife and Wear Plate” in this Chapter).
2. Use a stick to rotate the Flywheel until the Knife can be
positioned next to the Wear Plate.
3. Slide the Knife Gauge in between the Knife and Wear
Plate to check the clearance (Figure 39).
• If the Knife Gauge slides freely, with no
resistance and extra space, the Wear plate must
be adjusted.
• If the Knife Gauge will not slide down between
the Knife and Wear Plate, the Wear Plate must
be adjusted.
• If the Knife Gauge slides in between the Knife
and Wear Plate with some resistance felt against
them both then the Wear plate is properly
adjusted.
4. Install the Hopper when finished.
Knife Gap
Gauge
Figure 39
Knife
Wear
Plate
SHUT DOWN THE ENGINE, WAIT FOR ALL MOVING PARTS TO COME TO A COMPLETE STOP,
REMOVE SPARK PLUG WIRE, DISCONNECT THE NEGATIVE BATTERY CABLE, THEN WAIT 5 MINUTES
BEFORE PERFORMING ANY MAINTENANCE PROCEDURE OR INSPECTION ON THE CHIPPER.