Cutting Procedures; Maintenance And Inspection - Hitachi C 6SF Handling Instructions Manual

4. Fine tuning of parallelism
It is possible to fi ne-tune the parallelism of the saw
blade to the base using the parallelism adjustment
screw.
Adjustment has already been made at the time of
shipment from the factory. However, in the unlikely
event of parallelism being faulty, adjust as follows.
(1) Unfasten only the mounting screws of the saw
cover hinge portion (Fig. 4).
(2) Retract the protective cover into the saw cover.
(3) Insert wood chip in the rear side of the saw blade
base, and mark the position on the base (Fig. 5).
(4) Move the marked wood chip to the front of the
base, and turn the parallelism adjustment screw
so that the marking corresponds to the base side
(Fig. 6).
(5) After adjustment, fasten the mounting screws
tightly in place.
NOTE
○ Parallelism may be slightly faulty if the cutting depth
is adjusted after parallelism adjustment.

CUTTING PROCEDURES

1. Place the saw body (base) on the lumber, and align
the cutting line with the saw blade at the front scale
(Fig. 7).
2. Turn ON the switch before the saw blade contacts
the lumber. The switch is turned ON when the
trigger is squeezed, and turned OFF when the trigger
is released.
CAUTIONS
○ Before starting to saw, confi rm that the saw blade
has attained full-speed revolution.
○ Should the saw blade stop or make an abnormal
noise while operating, promptly turn OFF the
switch.
○ Always take care in preventing the power cord from
coming near to the revolving saw blade.
○ Using the circular saw with the saw blade facing
upwards or sideways is very hazardous. Such
uncommon applications should be avoided.
○ When cutting materials, always wear protective
glasses.
○ When fi nished with a job, pull out the plug from the
receptacle.
MOUNTING AND DISMOUNTING THE SAW
BLADE
CAUTION
To avoid serious accident, ensure the switch is in the
OFF position, and the power source is disconnected.
1. Dismounting the saw blade
(1) Set the cutting depth to maximum and place the
circular saw in a rigid position (Fig. 8).
(2) Keeping the lock lever depressed, carefully turn
the bolt with the supplied box wrench.
(3) When the saw shaft is fi xed, turn the box wrench
counterclockwise to remove bolt and washer (B).
(4) While gripping the lower guard knob, retract the
lower guard into the saw cover and take out the
saw blade.
2. Mounting the saw blade
(1) Install the saw blade in the reverse order to
removal.
(2) Wipe off the swarf from the spindle, washer, etc.
(3) Washer (A) is supplied for 1 type of saw blades
with the hole diameter 20 mm (Fig. 9).
(4) The saw blade should be installed so that the
arrow on the saw blade is aligned with the arrow
on the saw cover.
(5) Tighten the bolt securely.
CAUTIONS
○ If a box wrench other than the one supplied is used,
the bolt cannot be tightened correctly. Always use
the supplied box wrench.
○ Before connecting the power cord, check that the
lock lever is returned to its original position and the
saw blade rotates smoothly.

MAINTENANCE AND INSPECTION

1. Inspecting the saw blade
Since use of a dull saw blade will cause motor
malfunctioning and degraded effi ciently, whet it or
replace with a new one without delay when abrasion
is noted.
2. 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.
3. 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.
4. Inspecting the carbon brushes (Fig. 10)
The motor employs carbon brushes which are
consumable parts.
carbon brush could result in motor trouble, replace
the carbon brushes with new ones which having the
same carbon brush No. shown in the fi gure when they
become worn to or near the "wear limit". In addition,
always keep carbon brushes clean and ensure that
they slide freely within the brush holders.
○ Replacing carbon brushes
Disassemble the brush cap with a slotted-head
screwdriver. The carbon brush can then be easily
removed.
5. Inspecting lower
maintenance
Carefully maintain the lower guard so that it remains
capable of smoothly functioning. Completely remove
sawdust deposited around the rotary portion of the
lower guard.
6. Service parts list
A: Item No.
B: Code No.
C: No. Used
D: Remarks
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 (i.e. code numbers and/or
design) may be changed without prior notice.
English
Since an excessively worn
guard functioning and its
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