MACKISSIC SC300M, Owner'S Manual

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Engine smokes.
(Please refer to the
Engine Owner’s Manual
for engine-specific
procedures.)
Check the oil level and adjust as needed.
You may be operating the machine on too great an incline. The machine should be level.
The Air Filter may be dirty; change it following the procedure in the Engine Owner’s Manual.
You may be using the wrong oil - too light for the temperature. Refer to your Engine Owner’s
Manual for detailed information.
Check that the Cooling Fins are clean and free of debris. Clean as needed.
Shut down the Engine, remove the Spark Plug Wire, and wait 5 minutes before performing any maintenance procedure or inspection
on the Shredder/Chipper.
S
YMPTOM
P
OSSIBLE
C
AUSE
The Engine runs but the
Rotor doesn’t rotate.
The Throttle Lever should be in the FAST (Rabbit) position to engage the Clutch.
The Drive Belt is loose, off or broken. Reinstall, re-
tension, or change Belt (refer to “ Section 4:
Maintaining the Shredder-chipper ”).
Remove any built-up debris from the shredder-chipper Hopper Inlet(s) and Discharge Chute.
The inner Shoes of the Clutch are worn and/or the Clutch Shoe Retaining Springs are weak or
broken.
Shredding and chipping
action seems too slow
or Rotor stalling. The Engine speed is too slow causing the Belt to slip. Run the Engine at full throttle.
Check for loose or damaged Drive Belt; tighten or replace.
Check for a dull or damaged Knife; sharpen or replace the Knife. Check for a clogged Shredder
Screen, clean if necessary.
Belt frays or falls off
frequently.
The Drive Pulley or Clutch groove may be nicked. Check the Drive Belt for wear and hard spots.
File off any nicks on the Drive Pulley or Clutch.
The Drive Belt may be stretched; readjust or replace it.
- Clutch overheats.
- Belt burns.
- Rotor won’t turn.
Immediately stop the Engine and remove the Spark Plug Wire.
Turn the Rotor with a wooden stick to be sure it turns freely.
Check the Drive Belt tension.
Remove any built-up debris from the shredder-chipper Hopper Inlet(s) and Discharge Chute.
The machine has
excessive vibration. Check for a dull or damaged Knife; sharpen or replace the Knife.
The Rotor is out of balance. Check the Rotor Assembly for any missing or broken Hammers or
Spacers; replace if necessary.
The Knife may not be seated properly on the Rotor. Loosen the Knife mounting screws, reset
the Knife, and tighten the screws.
When chipping, the log
seems to vibrate
excessively and
“hammers” my hands.
The Knife is dull; sharpen or replace it.
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