Echo 72928 Owners Manual v.7 - Manual (Page 16)

9 INCH CHIPPER 12
CONTROLS AND OPERATION
3.3.2 HYDroSTaTiC PumP STarT uP
Follow this start-up procedure when starting a new
installation or when restarting an installation in which the
hydrostatic pump has been removed from the system.
1. Before starting the hydrostatic pump, make sure all sys-
tem components (reservoir, fittings, etc.) are clean.
2. Fill the reservoir with recommended hydraulic fluid,
which should be filtered before entering the reser-
voir.
3. The inlet line leading from the reservoir to the charge
pump must be filled before start-up. loosen the fitting
on this inlet line until oil bleeds out.
4. Start the engine and run at the lowest possible RPM.
3.2 oPeraTion (ConT.)
Warning
Do not leave machine unattended. Do not inspect or
service the machine unless the engine is stopped.
3.2.3 CHiPPing
This chipper is designed to chip a variety of materials into
a more readily decomposing or handled condition. The
following guidelines can be used to help you get started.
Be sure the unit is at full operating speed before you 1.
start to chip material.
Select limbs that are up to 9 inches in diameter. Trim
2.
side branches that cannot be bent enough to feed into
the chipper chute. Small diameter branches can be
held together in a bundle and fed in simultaneously.
Feed brush from the side of the chute, rather than
3.
from the front. Then, step aside to avoid being hit by
the brush moving into the chipper.
Never lean over the chute to push objects into the cut-
4.
ting device. Use a push stick or brush paddle.
Never use shovels or forks to push brush. They can 5.
go through the chipper, are expensive to replace, and
cause major damage. In addition, metal pieces can
be shot back like shrapnel to injure or kill the operator
or bystanders.
Never push brush into the chute with your feet.
6.
Engage the hydraulic feed by moving the control arm. 7.
Pull the arm toward you to engage the hydraulic feed.
In the forward direction, the feed rate increases as the
arm is moved.
Place branch, butt end first, into the chipper chute until
8.
it contacts the hydraulic feed roller and is drawn into
the chipper blades. The actual feed rate of the branch
into the chipper will depend on the type of material fed
and the sharpness of the cutting blades.
If the engine slows to where it may stall, push the con-
9.
trol lever inwards to slow or stop the material feeding
and allow engine to recover. Pull the lever out to restart
feeding when the engine is back to full speed.
Warning
Keep face and body away from the feed opening. Do
not over reach. Keep proper balance and footing at all
times.
3.3 HYDrauliC feeD oPeraTion
3.3.1 fluiDS
Premium hydraulic fluids containing high quality rust,
oxidation and foam inhibitors are required. These include
premium turbine oils, API CD engine oils per SAE J183,
M2C33F or g automatic transmission fluids meeting Allison
C-3 or Caterpillar TO-2, and certain specialty agricultural
tractor fluids.
CauTion
Handle pressurized hydraulic fluid carefully. Escaping
pressurized hydraulic fluid can have sufficient force to
penetrate your skin causing serious injury. This fluid
may also be hot enough to burn. Serious infection or
reactions can develop if proper medical treatment is not
administered immediately.
Warning
Please read and follow all safety instructions in this
manual. Failure to operate the chipper in accordance
with the safety instructions MAy RESUlT IN PERSONAl
INJURy!
If the chipper jams, reverse the feed by pushing the 10.
control arm to reverse direction. Remove the branch
and rotate it before reinserting it into the chute. Alter-
nately insert and retract the limb or insert continuously
at a rate that will not stall the engine.
Chipping dead, dry material will create heat and dull the
11.
chipping blades quickly. Alternate greener material with
dry material to lubricate the chipping blades for longer
life and better performance. When the chipping blades
become dull, they will require sharpening. Refer to the
Service and Maintenance section for more information
on sharpening blades.