Echo 74500 Owners Manual v.4 - Manual (Page 16)

5" and 8" Skid Steer Chipper Owner's Manual 14
OPERATION
the machine chips a variety of materials into a more
readily decomposed or handled condition. the following
guidelines can help you get started.
run unit at full operating speed before starting to chip
material.
the 74500 is most effective when chipping 3 inch
material. Material that is up to 5 inches in diameter
will fit into the machine, though it may bog the chipper
down. the 74800 is most effective when chipping 5
inch material. Material that is up to 8 inches in diameter
will fit in the machine, though it may bog the chipper
down.
trim side branches that cannot be bent enough to feed
into the chipper chute. Hold small diameter branches
together in a bundle and feed in simultaneously.
exclude pieces of metal, rocks, bottles, cans, and
other foreign objects when feeding material into the
machine.
Feed brush from the side of the chipper chute, rather
than from the front. Step aside to avoid being hit by
the brush moving into the chipper.
Do not lean over the chipper chute to push objects
into the cutting device. use a push stick or brush
paddle.
Never use shovels or forks to feed brush. they can
be chipped, are expensive to replace, and cause
extensive damage. in addition, metal pieces can be
ejected from the chipper chute and cause serious
injury or death.
Never feed brush into the chipper chute with your feet.
Place limb, butt end first, into the chipper chute until
it contacts the chipper blades. the actual feed rate
of the limb into the chipper will depend on the type of
material fed and sharpness of the cutting blades.
Stop the material feeding and allow the engine to
recover if the engine slows to where it may stall.
remove the branch and rotate it before reinserting it
into the chute if the chipper jams.
alternately insert and retract the limb or insert continu-
ously at a rate that will not kill the engine.
Chipping dead, dry material will create heat and dull
the chipping blades quickly.
alternate green material with dry material to lubricate the
chipping blades for longer life and better performance.
the chipping blades will become dull and will require
periodic sharpening. refer to the Service and Main-
tenance section for sharpening instructions.
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Before the chipper feed area is serviced, the feed roller
support must be locked in the upright position. to raise the
feed roller, proceed as follows.
Stop skid steer engine, disengage hydraulics, and
allow machine to come to a complete stop.
Turn the check valve located on the bottom of the jack
clockwise, engaging the jack.
remove the lock pin from its storage position (see
figure below).
Pump the handle to raise the feed roller until the lock
pin position aligns with one of the support bracket
holes.
Secure the position by putting the lock pin through the
support bracket and lock pin position. this will ensure
the feed roller cannot fall from the upright position.
Service or clear the unit of debris.
to lower the feed roller support, remove the lock pin
and then turn check valve counterclockwise to disen-
gage the pump.
replace lock pin in storage position.
leaving
The lock Pin in anY oTher PosiTion maY
inTerfere WiTh feed roller oPeraTion.
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Figure 4.7 - Feed Roller Lock
4.9 raising The feed roller
the feed roller must be secured in the up position prior
to servicing the chipper feed area. Failure to do so can
result in serious injury or death.
Warning
4.10 chiPPing guide