Echo CH5653 Owners Manual v.1 - Manual (Page 18)

5 INCH CHIPPER 14
SERVICE & MAINTENANCE
WARNING
BEFORE INSPECTING OR SERVICING ANY PART OF THIS MACHINE, SHUT OFF POWER SOURCE AND MAKE SURE
ALL MOVING PARTS HAVE COME TO A COMPLETE STOP.
5.6 aDJusTinG/replacinG Drive BelT
1. Shut off engine and disconnect spark plugs.
2. remove belt guard.
3. remove belt guides on the engine.
4. Take the tension off the drive belt by moving the belt
engagement handle to the START postion and remove
the belt idler pulley assembly.
To adjust the chipping anvil:
1. lift rotor access cover and expose rotor. loosen the
two 1/2" bolts that hold the chipper anvil to the frame.
2. Measure the amount of clearance between chipping
blade and chipping anvil from inside of housing.
3. Adjust inward or outward to desired measurement.
4. Tighten bolts on chipping anvil to 75 ft-lbs. Make
sure all blades clear the anvil by 1/16" to 1/8" before
operating.
If the chipping anvil edge is damaged or worn unevenly,
remove the two bolts holding the anvil and use one of the
other three edges. Adjust for correct measurement.
5.5 seTTinG BlaDe clearance
Figure 5.4, Chipping anvil location
Figure 5.3 Blade sharpening,
5.4 sharpeninG The BlaDes
45°
.25
MOUNTING SURFACE
(DO NOT GRIND)
MOUNTING SURFACE
(DO NOT GRIND)
SHARPENED
SURFACE
SHARPENED
SURFACE
The blades can be ground on a bench grinder or by a
professional.
1. Never sharpen or grind the mounting surfaces of the
blades. This will cause the edge to roll and the blade will
be damaged, resulting in poor chipping performance.
2. Regrind the angled edge of the chipping blades to 45
degrees (Figure 5.3). Make sure some type of fixture is
used to correctly hold the blade at the proper angle.
3. Be careful when grinding so that the blade does not
become overheated and change color. This will remove
the heat-treated properties.
4. use short grinding times and cool with water or some
type of liquid coolant.
5. Remove an equal amount off each blade to maintain
rotor balance.
6. Small imperfections such as nicks and burrs on the flat
side of the blade will not affect the chipping performance
of the machine.
7. For blades that have been repeatedly sharpened,
ensure that the sharpened surface extends past the
chipping slot opening. If it does not extend past the
opening, the blades should be replaced.
The chipping blades should clear the anvil by 1/16" to
1/8". Check the clearance every 8 hours of operation and
adjust if needed. The chipping anvil is reversible. All four
sides of the anvil can be used for chipping.
Check the condition of the drive belt annually or after every
25 hours of operating, whichever comes first. If the belt is
cracked, frayed, or worn, replace it. To replace or adjust
drive belt, proceed as follows: