Makita DUC256 Instruction Manual page 23

•
Chain blade
55°
•
Chain blade
55°
•
Chain blade
55°
File and file guiding
—
Use a
file
for
the chain. Normal round files
not
—
Diameter of
file
saw
as
•
Chainblade
4.5
•
Chainblade
4.0
•
Chainblade
4.0
—
The file
engage
on
stroke.
file
cutter
return
—
Sharpen the
first.
length
becomes the standard for all other cutters on
the saw chain.
—
Guide the
shown
figure.
►
Fig.27: 1. File 2. Saw chain
—
The file can
more easily
file holder
accessory) is
file holder
for the correct sharpening angle of 30° (align the
markings parallel to the saw chain) and limits the
depth of penetration (to
of the
►
Fig.28: 1. File holder
—
After sharpening the chain, check the height of the
depth gauge using the chain gauge tool (optional
accessory).
►
Fig.29
—
Remove any
however small,
Replacing the sprocket
special flat
accessory).
90PX :
91PX :
25AP :
special round
(optional accessory)
saw chains to sharpen
are
suitable.
the round
for each
chain is
follows:
90PX :
mm
91PX :
mm
25AP :
mm
should only
the cutter
the forward
Lift the
off the
on the
stroke.
shortest cutter
Then the
of this shortest cutter
file as
in the
be guided
if a
(optional
employed. The
has markings
4/5
file diameter).
projecting material,
with a
file (optional
23 ENGLISH
—
Round off the front of the depth gauge again.
Cleaning the guide bar
Chips and sawdust will build up in the guide bar groove.
They may clog
groove and impair
flow. Clean out the chips and sawdust every time
when you sharpen or replace the saw chain. ►
Fig.30
Cleaning the sprocket cover
Chips and saw dust will accumulate inside of the
sprocket cover. Remove the sprocket cover and saw
chain from the tool then clean the chips and saw dust.
►
Fig.31
Cleaning the oil discharge hole
Small dust or particles may be built up in the oil
discharge hole during operation. These dust or particles
may impair the oil to
cause an insufficient lubrication on
the whole saw chain. When a poor chain oil
delivery occurs at the top of guide bar, clean the oil
discharge hole as follows.
1. Remove the sprocket cover and saw chain from
the tool.
2. Remove the small dust or particles using a slotted
screwdriver or the like.
►
Fig.32: 1. Slotted screwdriver 2. Oil
discharge hole
3. Insert the battery cartridge into the tool. Pull the
switch trigger
built-up dust
off the
hole by discharging chain oil.
4. Remove the battery cartridge from the tool.
Reinstall the sprocket cover and saw chain on the tool.
CAUTION:
A worn sprocket will damage a new
saw chain. Have the sprocket replaced in this case.
Before fitting a
chain, check
of the sprocket.
►
Fig.33: 1. Sprocket 2. Areas to be worn
out
Always fit a
ring when
sprocket.
►
Fig.34: 1. Locking ring 2. Sprocket
Storing the tool
NOTICE:
Make sure that the sprocket is installed
as shown in the figure.
the bar
the oil
flow and
to flow
or particles
oil discharge
new saw
the condition
new locking
replacing the