Cleaning The Guide Bar, Lubricating The Sprocket Nose; Replacing The Saw Chain; Replacing The Suction Head; Cleaning The Air Filter - Makita DCS231T Originalbetriebsanleitung

All cutters must be sharpened to the same angle, 30°.
Different angles result in a roughly, irregularly running
chain, increase wear and tear and cause chain beakage.
The 85° front rake of the cutter results from the cut depth
of the round file. If the proper file is used in the right
manner, the correct front rake will be obtained
automatically. (Fig. 49)
Files and how to work with them (Fig. 50)
Use a special round file for chains (dia. 4 mm) for
sharpening the chain. Normal round files are not
appropriate for this work.
The file should cut only when pushed forwards (arrow).
Lift the file when leading it backwards.
First sharpen the shortest cutter. The length of this cutter
is then the standard for all other cutters of the chain.
Always guide the file horizontally (90° to the guide bar).
The file holder makes file guidance easier. It is marked for
the correct 30° sharpening angle (keep the marks parallel
with the chain when filing, see illustration) and limits the
cut depth to the correct 4/5 of the file diameter. (Fig. 51)
After having sharpened the chain, the height of the depth
limiter must be checked by means of a chain gauge.
Correct even the smallest excess height with a special flat
file (12).
Round off the front of the depth limiter (13). (Fig. 52)
Cleaning the sprocket interior, checking and
replacing the chain catcher (Fig. 53)
CAUTION: Before doing any work on the guide bar or
chain, always switch off the engine and pull the plug
cap off the spark plug (see "Replacing the spark plug").
Always wear protective gloves!
CAUTION: Do not start the saw until it has been
completely assembled and inspected!
Remove the sprocket cover (4) (see section on "PUTTING
INTO OPERATION") and clean the interior with a brush.
Remove the chain (3) and guide bar (2).
NOTE:
Make sure that no residue or contaminants remain in the
oil guide groove (1) and the chain tightener (6).
For replacing the guide bar, chain, and sprocket, see
"PUTTING INTO OPERATION".
Chain catcher
Visually inspect the chain catcher (5) for damage and
replace if necessary.

Cleaning the guide bar, lubricating the sprocket nose

(Fig. 54)
CAUTION: Protective gloves must be worn.
Regularly inspect the bearing surfaces of the guide bar for
damage, and clean them with a suitable tool.
Sprocket nose type:
If the saw is used intensively it will be necessary to
lubricate the return sprocket bearings regularly (once a
week). To do this, first thoroughly clean the 2 mm hole at
the tip of the guide bar, and then press in a small amount
of multi-purpose grease. Multi-purpose grease and
grease guns are available as accessories.
Multi-purpose grease 944 360 000
Grease guns 944 350 000
24
Replacing the saw chain (Fig. 55)
CAUTION: Use only chains and guide bars designed
for this saw.
Check the sprocket (10) before mounting a new chain.
CAUTION: Worn out sprockets may damage the new
chain and must therefore be replaced.
Replacing the suction head (Fig. 56)
The felt filter (12) of the suction head can become
clogged. It is recommended to replace the suction head
once every three months in order to ensure unimpeded
fuel flow to the carburetor. To remove the suction head for
replacement, pull it out through the tank filler neck using a
piece of wire bent at one end to form a hook.
Cleaning the air filter (Fig. 57)
Unscrew screw (14) and remove the cleaner case cover
(13).
IMPORTANT: Cover the intake opening with a clean cloth
in order to prevent dirt particles from falling into the
carburetor. Remove the air filter (15).
CAUTION: To prevent injury to the eyes, do NOT blow
out dirt particles! Do not use fuel to clean the air filter.
Clean the air filter with a soft brush.
If the filter is very dirty, clean it in lukewarm water with
dishwashing detergent.
Let the air filter dry completely.
If the filter is very dirty, clean it frequently (several times a
day), because only a clean air filter provides full engine
power.
CAUTION:
Replace damaged air filters immediately.
Pieces of cloth or large dirt particles can destroy the
engine!
Replacing the spark plug (Fig. 58)
CAUTION:
Do not touch the spark plug or plug cap if the engine
is running (high voltage). Switch off the engine before
starting any maintenance work. A hot engine can
cause burns. Wear protective gloves!
The spark plug must be replaced in case of damage to the
insulator, electrode erosion (burn) or if the electrodes are
very dirty or oily.
Remove the cleaner case cover (see "Cleaning the air
filter").
Pull the plug cap (1) off the spark plug. Use only the
combination wrench supplied with the saw to remove the
spark plug.
CAUTION: Use only the following spark plugs: NGK
CMR6A.
Electrode gap (Fig. 59)
The electrode gap must be 0.6 - 0.7 mm.
Cleaning the inlet port of the cooling air (Fig. 60)
Unscrew four screws (2). Remove recoil starter (3). Clean
the inlet port (4) and the cylinder fins.
STOP
STOP