Road-towable Safety & Operating Instructions

40 DR
®
18 and 19 HP ROAD-TOWABLE CHIPPER
• AFTER ANY KNIFE OR WEAR PLATE MAINTENANCE OR ADJUSTMENT, ROTATE THE CHIPPER DISK
BY USING A WOODEN STICK AND WATCH AND LISTEN CAREFULLY FOR ANY UNUSUAL NOISES,
CLICKING OR VIBRATION. IF ANY OF THESE IS DETECTED, INSPECT THE MACHINE FOR DAMAGE,
OR ANY LOOSE PARTS. REPAIR OR REPLACE ANY DAMAGED PARTS AND TIGHTEN ANY LOOSE
PARTS BEFORE STARTING THE DR ROAD-TOWABLE CHIPPER.
• IF AT ANY TIME IT BECOMES NECESSARY TO DISASSEMBLE THE CHIPPER FOR REPAIRS, THE
CHIPPER DISK MUST BE RE-INSTALLED IN EXACTLY THE SAME POSITION ON THE ROTOR SHAFT.
Adjusting the Knife to Wear Plate Gap
When you replace the Knife, check and set the clearance between the Knife and Wear Plate. Set this
clearance or gap to 1/16" (Figure 19). 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. 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.
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 WIRES, KEEPING THEM AWAY FROM THE SPARK PLUGS.
Tools Needed:
• 5/16" wrench or socket
• 7/16" wrench or socket
• Gap Gauge (provided)
1. To prevent accidental Starter engagement, disconnect the battery at the negative terminal.
2. To adjust the Wear Plate Gap, loosen the three (3) 1/4" Nuts and Bolts while holding the Wear Plate in
place. Now you can slide the Wear Plate up or down (in or out) to achieve the correct gap setting.
3. Take the Gap Gauge and slide it between the Knife and Wear Plate. If the gap is set correctly, the Gap
Gauge will lightly touch both the Knife and Wear Plate. If the gap is too small, you will not be able to get
the Gauge between the Knife and Wear Plate. If the gap is too large, there will be excess room between
Gap Gauge, Knife, and Wear Plate.
4. Tighten the Nuts and Bolts when the Wear Plate is in the correct position (Figure 19).
5. Re-connect the negative battery terminal wire and the spark plug wires.
Figure 19
1/16" Gap
Wear Plate
Chipper Knife
Flywheel