MTD 790 TB-TrimmerBlower, Руководство пользователя, Страница: 13 / 15

English Operating instruction
10
Cleaning the air filter
After every ten operating hours
clean and oil the air filter. This is an
important part of maintenance. If the
air filter is not serviced, the warranty
will be deemed
NULL AND VOID .
n
Remove the air filter/muffler cover.
See
Removing the air filter/
muffler cover.
n
Remove the air filter behind the air
filter/muffler cover (Fig. 20).
n
Wash the filter with water and
detergent (Fig. 21). Flush out the
filter thoroughly. Press out excess
water. Leave filter to dry
completely.
n
Lightly lubricate the filter with
clean oil (Fig. 22).
n
Press out the filter to distribute the
oil and remove excess oil (Fig. 23).
n
Reinstall the air filter in the air filter/
muffler cover (Fig. 20).
Note
If the unit is used without the air filter
and air filter/muffler cover, the
warranty will be deemed
NULL AND
VOID .
Installing the air filter/muffler
cover
n
Place the air filter/muffler cover
over the rear part of the
carburettor and muffler.
Note
The choke lever must
be at HALFWAY (2) before the air
filter/silencer cover can be installed
(Fig 19).
n
Insert the four (4) screws into
the holes of the air filter/muffler
cover (Fig. 19) and tighten.
Use a flat screwdriver or T20 Torx
screwdriver bit. Do not tighten
too tightly.
Adjust carburettor
The idle speed can be set with
the screw (Fig. 24). Have this setting
carried out by a specialist company
only.
Check/replace spark plug
Use a Champion RDJ7Y spark plug
(or an equivalent spark plug). The
correct electrode gap is
0.63 mm.
Every 50 operating hours take out
the spark plug and check its
condition.
n
Stop the engine and leave it
to cool down.
n
Remove spark-plug terminal.
n
Remove dirt from around
the spark plug.
n
Unscrew spark plug to the left
with a spark plug wrench.
n
Check/set the electrode
gap
0.63 mm (Fig. 25).
Note
Replace a damaged, sooted or dirty
spark plug.
n
Screw in spark plug and tighten
to a torque of 12.3–13.5 Nm.
Do not tighten too tightly.
Cleaning
Use a small brush for cleaning the
outside of the unit. Do not use
abrasive detergents. Household
cleaners which contain aromatic oils
such as pine oil or lemon as well as
solvents such as kerosene may
damage the plastic housing and
handle. Wipe damp areas with a soft
cloth.
Storage
– Never store the unit with fuel in the
tank or where fumes are within
reach of a spark or naked flame.
– Before storing the unit, leave the
engine to cool down.
– Store the dry unit locked away
or high up to prevent
unauthorised use and damage.
Keep the unit away from children.
Long-term storage
If the unit is to be stored for
a prolonged period, proceed
as follows:
n
Drain all the fuel out of the tank
and pour into a container with
the same two-stroke mixture.
Do not use fuel which has been
stored for longer than 60 days.
n
Start the engine and leave running
until it stops. This ensures that
there is no fuel left in the
carburettor.
n
Leave the engine to cool down.
Take out the spark plug and pour
a high-quality engine oil or two-
stroke oil into the cylinder. Slowly
pull the starter rope to distribute
the oil. Reinstall the spark plug.
Note
Before starting the lawn trimmer
after storage, take out the spark
plug and pour all the oil out of the
cylinder.
n
Thoroughly clean the unit and
check for loose and damaged
parts. Repair or replace damaged
parts and tighten loose screws,
nuts and bolts. The unit can now
be stored.
n
Store the unit locked away or high
up to prevent unauthorised use
and damage. Keep the unit away
from children.
Warranty
The warranty regulations issued
by our company or the importer
are valid in all countries. We shall
repair any faults on your unit free
of charge in accordance with the
warranty, provided the fault was
due to defective materials or manu-
facturing. If claiming under the war-
ranty, please contact your seller or
your nearest branch