Echo CH45342 Owners Manual v.2 - Manual (Page 21)

4.5 INCH CHIPPER
17
ENGLISH
SERVICE & MAINTENANCE
BeFoRe InSpeCtInG oR SeRVICInG any paRt oF tHIS MaCHIne, SHut oFF poWeR SouRCe,
DISConneCt SpaRk pluG WIRe FRoM SpaRk pluG anD Make SuRe all MoVInG paRtS HaVe CoMe to a CoMplete Stop.
WaRNING
lock disk assembly (section 5.2). 1.
place a blade on the disk and attach using original 2.
hardware. Torque the bolts to 140 ft.-lbs (190 Nm).
Repeat for the remaining blade.
Reinstall the chipper discharge cap or optional
3.
discharge tube (section 2.2).
45˚
SHARPENED
SURFACE
MOUNTING SURFACE
(DO NOT GRIND)
.38
SHARPENED
SURFACE
MOUNTING SURFACE
(DO NOT GRIND)
DISK
CHIPPER
BLADE
ANVIL
1/16”
Figure 5.2, Chipper blade and anvil clearance
WaRNING
It is important to ensure that the minimum gap between
the chipping anvil and all chipping blades is 1/16". all
chipping blades should be rotated until even with the
chipping anvil and then measured. Failure to do so can
result in the chipping blades striking the chipping anvil,
causing serious injury or death.
5.5 SHaRpENING THE bLadES
NoTE
If the chipping anvil edge is damaged or worn unevenly,
remove the three 5/16" bolts and washers holding the
anvil to the disk cover and use one of the other three
edges. Adjust for correct measurement.
5.6 INSTaLLING THE bLadES
the chipping blades should clear the chipping anvil,
located directly under the chipper chute, by 1/16" to 1/8".
Removing the chipper chute is NoT required for setting
the chipping blade clearance. However, removing the
5.7 SETTING bLadE CLEaRaNCE
chipper chute can provide better access for measuring the
chipping blade clearance. To adjust the blade clearance,
proceed as follows:
Rotate the disk until a chipping blade is even with the 1.
chipping anvil.
Measure the amount of clearance between the chipping
2.
blade and chipper anvil from inside of the chipper
housing. the minimum distance between the chipping
blade and the chipping anvil should be 1/16" (figure
5.2).
Adjust the anvil by loosening the 5/16" x 5/8" bolts
3.
holding the anvil to the disk cover and sliding the anvil
inward or outward until the desired measurement is
achieved.
torque the bolts to 17 Ft-lbs.
4.
Rotate the rotor to ensure the remaining blade clears 5.
the anvil by 1/16" to 1/8".
If the chipper chute was removed, reinstall it.
6.
the blades can be ground on a bench grinder or by a
professional.
never sharpen or grind the mounting surfaces of the 1.
blades. this will cause the edge to roll and the blade will
be damaged, resulting in poor chipping performance.
Regrind the angled edge of the chipping blades to 45
2.
degrees. Make sure some type of fixture is used to
correctly hold the blade at the proper angle.
Be careful when grinding so that the blade does not
3.
become overheated and change color. this will remove
the heat-treated properties.
use short grinding times and cool with water or some
4.
type of liquid coolant.
Remove an equal amount off each blade to maintain
5.
rotor balance.
Small imperfections such as nicks and burrs on
6.
the flat side of the blade will not affect the chipping
performance of the machine.
For blades that have been repeatedly sharpened,
7.
ensure that the sharpened surface extends past the
chipping slot opening. If it does not extend past the
opening, the blades should be replaced.