EMAK BCH 250 Betribs- Und Wartungsanleitung Seite 39

BLADE SHARPENING (2-3-4 TOOTH)
1. Blades are reversible: when one side is no
longer sharp, the blade can be turned over
and used on the other side (Fig. 13).
2. Blades are sharpened using a flat single-cut
file (Fig. 13).
3. To maintain the correct balance, file all cutting
edges uniformly.
4. If the blades are not sharpened correctly, this
can set up abnormal vibrations in the machine
and cause the blades themselves to break
ultimately.
WARNING! – The wrong type of cutter or
an incorrectly sharpened blade will increase the
risk of kickback. Check mower blades for
deterioration or cracks, and replace if damaged.
WARNING: Never repair damaged
cutting attachments
straightening or modifying the shape. This
may cause parts of the cutting tool to come
off and result in serious or fatal injuries.
NYLON LINE HEAD
Only use line of the same diameter as the original
to avoid overloading the engine (Fig. 14).
In order to get more line out of the cutting head,
tap it lightly on the ground while working.
Note: Never hit the nylon head against hard spots
such as concrete or stones, it could be dangerous.
Replacing the nylon line on the TAP&GO
trimmer head (Fig.15)
1 - Press the tab (1, Fig. 15) and remove the cover
and the internal spool.
2 - Double back the line, leaving one end 14 cm
longer than the other one. Lock the line in the
notch (2, Fig. 15). Wind the line in the direction
of the arrow, each end in its chink, regulary,
without crossing them.
3 - At the end of the winding, lock in the slits (3,
Fig. 15) Assemble the spring. Thread the line
through the eyelets (4) (fig.15), secure the
head with the cover (5) and then pull the line
outwards from the head (6).
WARNING! – Always wear protective
gloves during maintenance operations. Do not
carry out maintenance with the engine hot.
AIR FILTER
Every 8-10 working hours, remove the cover (A,
Fig. 19), clean the filter (B).
Blow with compressed air, at a distance.
Replace if dirty or damaged. The engine runs
irregularly if the filter is clogged, with consequent
higher consumption and lower performance.
FUEL FILTER
Check fuel filter periodically. A dirty filter can cause
difficult starting and lower engine performance.
To clean filter proceed as follows: remove it from
fuel filling hole. Replace it (Fig. 17) if too dirty.
ENGINE
Clean cylinder fins with a brush or compressed
by welding,
air periodically. Dangerous overheating of engine
may occur due to impurities on the cylinder.
SPARK PLUG
Clean spark plug and check electrode distance
periodically (Fig. 18). Use Champion TORCH L8RTF
or of other brand with the same thermal grade.
GEAR HOUSING
Every 30 working hours, remove screw (D, Fig. 6)
on the gear housing and check the quantity of
grease. Do not use more than 10 grams. Use high
quality molybdenum bisulfide grease.
Never use fuel for cleaning operations.
TRASMISSION
Grease the joints of the rigid tube (D, Fig. 20) every
30 working hours with molybdenum disulfide.
CARBURETOR (Fig.16)
Before adjusting the carburetor, clean the air filter
(B, Fig. 19) and warm up the engine. This engine
is designed and manufactured in order to comply
with the applicable (EU) 2016/1628, (EU) 2017/654
and (EU) 2017/656 Regulations.
Idle screw T is adjusted in order to ensure a good
GB
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