Road-towable Safety & Operating Instructions

48 DR
®
18 and 19 HP ROAD-TOWABLE CHIPPER
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.
SYMPTOM POSSIBLE CAUSE
The engine lacks
power or is not
running smoothly.
(Please refer to the
Engine Owner’s
Manual for engine-
specific procedures.)
⇒ Check the Throttle Lever travel and adjustment. Is the Throttle Lever in the Run
position?
⇒ Is the Choke lever pushed all the way IN to the RUN position? See page 26.
⇒ Is the air filter clean? If it’s dirty, change it following the procedure in the Engine
Owner’s Manual.
⇒ Are the spark plugs clean? If they are fouled or cracked, change them. If they are
oily, leave them out, hold a rag over the spark plug holes and engage the electric
starter for a few seconds to blow out any oil in the cylinders, then wipe off the
spark plugs and reinsert them.
⇒ Are you using fresh, clean unleaded gas? If it’s old, change it. Use a fuel stabilizer
if you keep gas longer than two weeks or so.
⇒ Does your engine have the right amount of clean oil? If it’s dirty, change it
following the procedure on page 33.
⇒ If your engine still lacks power, call 1(800) DR-OWNER (376-9637) for assistance.
Engine smokes.
⇒ Check the oil level and adjust as needed.
⇒ You may be operating the machine on too great an incline. The machine should
be level.
⇒ Check the air filter and clean or replace if needed.
⇒ You may be using the wrong oil - too light for the temperature. Refer to your
Engine Owner’s Manual for detailed information.
⇒ Clean the engine cooling fins and the carburetor housing if they’re dirty.
⇒ If the engine still smokes, call 1(800) DR-OWNER (376-9637) for assistance.
Chipping action
seems too slow or
flywheel stalling.
⇒ The engine speed is too slow causing the belt to slip. Run the engine at full
throttle.
⇒ Check for loose or damaged Drive Belts; tighten or replace. See page 35.
⇒ Check for a dull or damaged Knife; sharpen or replace the Knife. See page 38.
The belt frays or
rolls over the pulley.
⇒ The rotor Drive Pulley groove may be nicked. Check the Drive Belts for wear and
hard spots. File off any nicks on the pulley.
⇒ The Drive Belts may be stretched; replace them. See page 35.
- Clutch overheats.
- Belt burns.
- Flywheel won’t
turn.
⇒ Immediately stop the engine and disconnect the spark plug wires.
⇒ Turn the flywheel with a wooden stick to be sure it turns freely.
⇒ Check the Drive Belt tension. See page 35.
⇒ Remove any built-up debris from the Chipper Hopper Inlet and Discharge Chute.