Echo 77412 Owners Manual v.5 - Manual (Page 35)

4.5 INCH CHIPPER 33
Section
Before performing any of the corrections in this troubleshooting chart, refer to the appropriate information contained in
this manual for the correct safety precautions and operating or maintenance procedures. Contact your nearest dealer
or the factory for service problems with the machine.
Problem PoSSible cauSe remedY
Engine will not start.
Improper control settings. use proper settings.
Lack of fuel. Fill fuel tank.
Spark plug disconnected. Connect spark plug.
Dirty, stale or contaminated gas.
Refill gas tank with fresh, clean unleaded regular
gasoline.
Internal engine problems. See your dealer.
Engine or rotor stalls or
stops.
Obstructed discharge.
Use branch or similar object to clear discharge.
plugged rotor. Clear rotor. Feed material more evenly.
Feeding material too large into shredder. Reduce size of material being fed into shredder.
Engine overheats.
Cooling system plugged.
Clean cooling fan and fins.
Improper oil level.
Fill engine to correct oil level. Refer to the engine own-
ers manual.
Hard to feed chipper;
requires
excessive power to chip.
Dull chipper blades. Reverse or sharpen blades.
Obstructed discharge.
Use branch or similar object to clear discharge.
Improper blade clearance.
Adjust clearance between chipper block and chipper
blades.
Shredder requires ex-
cessive
power or stalls.
Obstructed discharge.
Use branch or similar object to clear discharge.
plugged rotor. Clear rotor, feed material into shredder more evenly.
Wet or green material will not discharge.
Alternately feed dry material or install larger discharge
screen.
Engine stalls or belt
squeals
when engaging clutch.
Engaging clutch too fast. Lower engagement handle more slowly.
plugged rotor. Clear rotor. Feed material more evenly.
Belt tension too loose. Replace belt or spring.
material from chipper
wraps
around rotor shaft.
Stringy, green material bypasses chipper
blades. Rotate branch or material when feeding to cut com-
pletely.
Dull chipper blades. Sharpen blades.
Improper blades clearance.
Adjust clearance between chipper block and chipper
blades.
Excessive vibration while
running.
Drive system vibration.
Check drive belts and pulleys for bad or worn areas.
Check for dull chipper blades or shredder knives.
Rotor out of balance.
Inspect rotor for broken or missing chipper blades and
shredder knives; replace if needed. Check rotor to
see if it wobbles. Check to see if rotor is assembled
correctly.
Chipper blade to chipper block clearance is
incorrect. Set chipper blade/block clearance to recommended
distance (1/16" to 1/8").
TroubleShooTing
5
5.1 general TroubleShooTing