Operational Cautions; Maintenance And Inspection - Hitachi CG 14DSDL Mode D'emploi

English
3. Trimming grass
○ Grip the handle from above, press the lock lever and
pull the lever to start nylon head rotation. (Fig. 25)
○ Release the lever when you fi nish trimming and stop the
motor.
○ Place your thumb on the loop handle and grip the
handle with your other fi ngers. (Fig. 26)
○ Take a posture that makes it easy to move.
[Grass trimming techniques]
Do not swing the pipe, but use the hips to move the
nylon head horizontally from right to left in an arc while
going forward and use the left side of the nylon head for
cutting grass. (Fig. 27)

OPERATIONAL CAUTIONS

Continuous work
This tool comes with an over-heat protection circuit
that protects the electronic parts that control the
rechargeable battery. In continuous trimming work, tool
temperature will rise and eventually trigger the over-
heat protection circuit, which will shut down the tool.
If this happens, let the tool cool for a length of time.
When the temperature drops, it will again become
possible to use the tool. When the rechargeable battery
has to be exchanged during continuous operation, let
the tool rest for about 15 minutes.
Overload Protection
This tool comes with an overload protection circuit
to protect the electronic parts controlling the tool. In
continuous overload during trimming work (locking the
nylon head, etc.), the overload protection circuit shuts
down the motor. If this happens, turn OFF the power,
and then resolve the problem causing the overload.
The power lamp blinks if the lever is pressed after the
motor has stopped (see page 16, "ABOUT POWER
LAMP"). The power automatically turns OFF if the
power lamp blinks longer than 5 seconds. If this
happens, resolve the problem causing the overload,
and then switch the power button ON to resume using
the tool.

MAINTENANCE AND INSPECTION

CAUTION
Pull out battery before doing any inspection or
maintenance.
1. Checking the condition of the nylon head
The nylon head should be checked regularly. If worn or
broken nylon head can slip or decrease the effi ciency of
the motor and burn it out.
Replace worn nylon head with new ones.
CAUTION
If you use a nylon head of which point is worn or broken,
it will be dangerous. So replace it with a new one.
2. Check the Screws
Loose screws are dangerous. Regularly inspect them
and make sure they are tight.
CAUTION
Using this power tool with loosened screws is extremely
dangerous.
3. Inspecting the carbon brushes (Fig. 28)
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.
18
NOTE
When replacing the carbon brush with a new one, be
sure to use the Hitachi Carbon Brush Code No. 999015.
4. 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. 29.
When installing the carbon brush, choose the direction
so that the nail of the carbon brush (see Fig. 30) agrees
with the contact portion of brush tube. Then push it in
with a fi nger as illustrated in Fig. 31. 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.
5. Cleaning of the outside
When the grass trimmer is stained, wipe with a soft dry
cloth or a cloth moistened with soapy water. Do not use
chloric solvents, gasoline or paint thinner, as they melt
plastics.
6. Storage
Store grass trimmer in a place in which the temperature
is less than 40°C and out of reach of children.
NOTE
Storing lithium-ion batteries.
Make sure the lithium-ion batteries have been fully
charged before storing them.
Prolonged storage (3 months or more) 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.
7. Service parts list
CAUTION
Repair, modifi cation and inspection of Hitachi Power
Tools must be carried out by a Hitachi Authorized
Service Center.
This Parts List will be helpful if presented with the tool to
the Hitachi Authorized Service Center when requesting
repair or other maintenance.
In the operation and maintenance of power tools, the
safety regulations and standards prescribed in each
country must be observed.
MODIFICATIONS
Hitachi Power Tools are constantly being improved
and modifi ed to incorporate the latest technological
advancements.
Accordingly, some parts may be changed without prior
notice.
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).