Maintenance And Inspection - Hitachi Koki CS 40Y Mode D'emploi

MAINTENANCE AND INSPECTION

WARNING
To avoid serious accident, ensure the switch
is in the OFF position and disconnect the plug
from the receptacle during maintenance and
inspection.
1. Inspecting the chain:
(1) Be sure to occasionally inspect the chain tension.
If the chain has become slack, adjust the tension as
directed in the section entitled "Adjusting the chain
tension".
(2) When the chain blades become dull, sharpen them
as directed in the section entitled "Sharpening of the
chain blade".
(3) When sawing work has been completed, thoroughly
oil chain and guide bar by depressing the oil button
three or four times while the chain is rotating. This will
prevent rusting.
2. Cleaning the guide bar:
When the guide bar groove or the oil hole becomes
clogged with sawdust, oil circulation becomes
impaired, which could result in damage to the tool.
Occasionally remove the chain cover and clean the
groove and oil hole with a length of wire, as shown in
Fig. 33.
Fig. 33
3. Cleaning the inside of side cover
Tension dial and knob operations will become
sluggish if sawdust or other foreign matter builds up
inside the side cover, and there are cases in which
they will cease to move completely. After using the
chain saw and after replacing the saw chain, etc.,
insert a slotted screwdriver into the gap beneath
the tension dial as shown in Fig. 34, lift up the knob
and tension dial and slowly remove the screwdriver
to clean the inside of the side cover and remove all
sawdust.
Slotted screwdriver
Tension dial
Fig. 34
4. Inspecting the carbon brushes (Fig. 35)
The motor employs carbon brushes which are
consumable parts. Since an excessively worn carbon
brush can result in motor trouble, replace the carbon
brush with a new one having the same carbon brush
No. shown in the fi gure 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.
Wear limit
0.28" (7 mm)
0.67" (17 mm)
110 V – 120 V
Fig. 35
NOTE
Use HITACHI carbon brush No. 38 indicated in
Fig. 35.
English
Knob
No. of carbon brush
38
19