Service & maintenance, Warning – Echo 74500 Owners Manual v.4 User Manual
Page 17
5" and 8" Skid Steer Chipper Owner's Manual
15
section
the items listed in the service and maintenance schedule are to be checked, and if necessary, corrective action taken.
this schedule is designed for units operating under normal conditions. if the unit is operating in adverse or severe usage
conditions it may be necessary for the items to be checked and serviced more frequently.
See engine owners manual for further maintenance and troubleshooting information.
service and mainTenance schedule
freQuencY
comPonenT
mainTenance
reQuired
before
each
use
everY
8 hrs
everY
25 hrs
everY
50 hrs
NutS & BOltS
CHeCk tOrQue
CHiPPer BladeS
CHeCk, SHarPeN
iF Needed
1
eNtire MaCHiNe
CleaN
rOtOr BeariNg
greaSe
1
it is a good sign that your chipper blades need sharpening when material stops self feeding.
5
service & maintenance
5.1 mainTenance schedule
the chipper blades will eventually become dull, making
chipping difficult and adding extra strain on the machine.
Poor chipping performance is usually a result of dull chipping
blades. it is recommended that the blades be sharpened
every 5 - 15 hours or if your chipper’s performance has
decreased. Check for the following symptoms and sharpen
the blades if needed.
Severe vibration when feeding material into the chipper.
Small diameter branches do not self-feed.
Chips discharge unevenly or have stringy tails, espe-
cially when chipping green branches.
1.
2.
3.
5.2 chiPPer blades
Chipping blades are sharp! use caution when working
on machine to avoid injury.
Warning
Before you sharpen the chipping blades, check for
permanent damage. replace the blade if:
there are cracks, broken corners or nicks greater than
1/8" (Figure 5.1).
the base of the cutting edge is worn or has been re-
sharpened so that the edge extends less than 1/16"
above the rotor chipping slot.
1.
2.
Figure 5.1 - Causes for Replacement
1/8"
1/4"