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Troubleshooting & Repair
GENERAL TROUBLESHOOTING
The troubleshooting guide below lists the most common
problems, causes and remedies.
See the service information on the following pages for
instructions on how to do most of these minor repairs
yourself. If you prefer, all of these procedures can be
performed for you by your local authorized dealer.
Engine won’t start.
Engine runs, but rotor
won’t turn.
Engine runs, rotor turns, but
no material is being discharged.
Excessive branch vibration when
chipping materials.
Unusual noise or vibration when
processing material.
Vacuum intake nozzle
not working.
A
WARNING
Never attempt to perform any of these procedures
with the engine/motor running. Always turn the
unit off, let the rotor come to a complete stop, and
disconnect
the
spark plug wire or power cord
Ezsre
attemptmg
to correct any operatmg
prob-
Failure to comply with this safety requirement can
result in serious personal injury to you or
bystanders.
l Out of gas.
l Spark plug wire disconnected.
l Engine controls set wrong.
l Spark plug fouled.
l No compression
-
rope pulls
without resistance.
l No spark
-
electrical system
problem.
l Safety switch open.
l Crankshaft key broken or not
installed.
l Discharge chute clogged.
l Engine not running at full RPM.
l Chipper knives dull.
l Tree limbs and branches are
extremely hard or dried out.
l Rotor overloaded with material.
l Non-organic matter caught in
shredding chamber.
l Chipper knives dull or loose.
l Hammers, broken, bent, or loose
l Hammers frozen on shaft.
l Crankshaft bent.
l Housing plugged with debris.
l Nozzle set too high for terrain.
l Flap not set to correct opening.
l Drive speed set too fast.
l Debris too wet.
l Debris layer too thick.
23
l Add gas.
l Connect spark plug wire.
l Check engine controls and
adjust.
*
Remove spark plug, clean, and
replace.
l See your local dealer.
l See your local dealer.
l Check safety switch.
l Replace crankshaft key.
l
Clear discharge chute.
l
Adjust throttle to “Fast” (3700rplr
l Sharpen or replace knives.
l Material too dried out or hard
for chipping
-
use for firewood.
l Allow unit to clear itself before
vacuuming more material.
l Follow shut-down procedure and
remove material from unit.
l Sharpen or tighten knives
Securely.
l Check for proper assembly or
replace.
l Check for obstructions and
remove debris from
hammer pivot areas.
l See your local dealer for
factory authorized repair.
l Stop unit
-
clean out housing.
l Adjust
-
see adjust. procedure.
l Adjust
-
see adjust. procedure.
l Reduce speed.
l Allow to dry
-
rake to separate.
l Reduce path width to112 nozzle.