Echo 74520 Owners Manual v.1 - Manual (Page 27)

24
Troubleshooting
Problem Probable Cause Suggested Remedies
8. Excessive vibration while
running.
9. Rotor will not turn.
10.Cannot engage clutch.
11.Excessive belt wear.
12.Trailer sways during towing.
13.Plugged discharge tube.
a) Drive system vibration.
b) Rotor out of balance.
c) Chipper blade to anvil
clearance is incorrect.
a) Drive belt too loose or bro-
ken.
b) Obstructed discharge.
c) Plugged rotor.
a) Improper belt installation.
b) Shock absorber binding.
c) Improper belt tension.
d) Engagment spring binding in
spring cover.
e) Pulleys not aligned.
f)
Clutch pedal binding.
a) Not using correct belt.
b) Pulley damaged or wore.
c) Pulley not in alignment.
d) Belt tension too loose.
a) Tire air pressure not correct.
a) Engine speed too slow.
b) Feeding too much material
into unit.
a) Check drive belts and pulleys for
bad or worn areas. Check PTO
shaft for wear.
Dull chipper blades.
b) Inspect rotor for broken or missing
chipper blades. Repair if needed.
Check rotor to see if it wobbles.
Check to see if rotor is assembled
correctly.
c) Set chipper blade to anvil clearance
to recommended distance (1/16” to
1/8”).
a) Adjust or replace.
b) Use branch or similar object to
clear discharge.
c) Clear rotor.
a) Install belt properly.
b) Replace shock absorber.
c) Tighten or loosen belt as needed.
d) Remove spring cover and clean.
e) Aligned pulleys with straight edge.
f)
Determine cause and repair.
a) Contact authorized dealer to order
Bear Cat belts.
b) Replace pulley.
c) Align pulley with straight edge.
d) Tighten belt or replace.
a) Check tire sidewall for inflation
limits.
a) Increase engine speed.
b) Feed smaller material into shredder.
Feed material into the shredder
slower.