4. Cleaning the guide bar (Figs. 10, 44)
When sawdust and similar become clogged in the
groove of the guide bar or oil spout, the oil may not fl ow,
which may result in the unit failing.
Remove the guide bar and clean any sawdust clogged
in the groove after use and when replacing the saw
chain. (Refer to "Installing (replacing) saw chain.")
5. Inspecting the carbon brushes (Fig. 45)
The motor employs carbon brushes which are
consumable parts. Since and excessively worn carbon
brush can result in motor trouble, replace the carbon
brush with new ones when it becomes worn to or
near the "wear limit". In addition, always keep carbon
brushes clean and ensure that they slide freely within
the brush holders.
NOTE
When replacing the carbon brush with a new one,
be sure to use the Hitachi Carbon Brush Code No.
999068.
6. Replacing carbon brushes
Take out the carbon brush by fi rst removing the brush
cap and then hooking the protrusion of the carbon
brush with a slotted head screw driver, etc., as shown
in Fig. 46.
When installing the carbon brush, choose the direction
so that the nail of the carbon brush (see Fig. 47) agrees
with the contact portion of brush tube. Then push it in
with a fi nger as illustrated in Fig. 48. Lastly, install the
brush cap.
CAUTION
○ Be absolutely sure to insert the nail of the carbon brush
into the contact portion of brush tube. (You can insert
whichever one of the two nails provided.)
○ Caution must be exercised since any error in this
operation can result in the deformed nail of the carbon
brush and may cause motor trouble at an early stage.
7. Inspecting the mounting screws
Regularly inspect all mounting screws and ensure that
they are properly tightened. Should any of the screws
be loose, retighten them immediately. Failure to do so
could result in serious hazard.
8. Maintenance of the motor
The motor unit winding is the very "heart" of the power
tool.
Exercise due care to ensure the winding does not
become damaged and/or wet with oil or water.
9. Cleaning of the outside
When the chain saw is stained, wipe with a soft dry cloth
or a cloth moistened with soapy water. Do not use chloric
solvents, gasoline or paint thinner, for they melt plastics.
10. Storage
When storing the unit, perform cleaning and
maintenance of each part and mount the chain case to
the guide bar.
Store the chain saw in a place where the temperature is
less than 40°C and out of reach of children.
NOTE
Make sure that the battery is fully charged when stored
for a long period (3 months or more). The battery with
smaller capacity may not be able to be charged when
used, if stored for a long period.
NOTE
Storing Lithium-ion Batteries
Make sure the lithium-ion batteries have been fully
charged before storing them.
Prolonged storage of batteries with a low charge
may result in performance deterioration, signifi cantly
reducing battery usage time or rendering the batteries
incapable of holding a charge.
However, signifi cantly reduced battery usage time may
be recovered by repeatedly charging and using the
batteries two to fi ve times.
If the battery usage time is extremely short despite
repeated charging and use, consider the batteries
dead and purchase new batteries.
CAUTION
In the operation and maintenance of power tools, the
safety regulations and standards prescribed in each
country must be observed.
SELECTING ACCESSORIES
The accessories of this machine are listed on page 341.
Important notice on the batteries for the Hitachi
cordless power tools
Please always use one of our designated genuine
batteries. We cannot guarantee the safety and
performance of our cordless power tool when used
with batteries other than these designated by us, or
when the battery is disassembled and modifi ed (such
as disassembly and replacement of cells or other
internal parts).
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English