Removing and Replacing the Chipper Knife
ROUTINELY CHECK THE CHIPPER KNIFE FOR SHARPNESS. USING A DULL KNIFE WILL DECREASE PERFORMANCE AND CAUSE EXCESSIVE VIBRATION THAT WILL CAUSE DAMAGE TO THE DR 10 HP CHIPPER ENGINE.
BEFORE PERFORMING ANY MAINTENANCE PROCEDURE OR INSPECTION, STOP THE ENGINE, WAIT FIVE
(5)MINUTES TO ALLOW ALL MOVING PARTS TO COME TO A COMPLETE STOP AND COOL. DISCONNECT THE SPARK PLUG WIRE, KEEPING IT AWAY FROM THE SPARK PLUG.
Knife Sharpening
•You should never attempt to sharpen the Chipper Knife freehand.
•It is extremely important to consistently maintain the
•Excessive heat generated during the sharpening process will damage Knives and weaken the metal. Be sure not to overheat the Knife during sharpening because it will shorten the life of the Knife.
•Take the Chipper Knife to a machine shop for proper sharpening.
•How many times a Knife can be sharpened is determined by how much material needs to be taken off to sharpen or to compensate for dents or gouges.
•A new Chipper Knife has 5/16" measurement between the short side bevel edge and the Knife mounting holes. See Figure 12.
Knife Mounting Hole
Short Side Beveled Edge | 5/16" | 5/16" |
New Knife
Figure 12
•The knife should never be sharpened to the extent that more than 3/32" is taken off this measurement.
•Once this measurement is below 7/32" (see Figure 13), or if you are unable to remove dents or gouges with these guidelines, replace the Knife.
7/32" 7/32"
Short Side Beveled Edge
Sharpened Knife
Figure 13
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