General Maintenance Instructions; Information About The Silencer; Replacing The Fuel Filter; Air Filter Maintenance - AL-KO solo 137 Mode D'emploi

7 Maintenance instructions

7.1 General maintenance instructions

The maintenance and the repair of modern
machines as well as their safety-relevant
assemblies require qualified specialised training
and a workshop equipped with special tools and
test equipment. Consequently the manufacturer
recommends that all tasks not described in these
operating instructions be carried out by a
specialised workshop. That specialist has the
required training, experience, and equipment at his
disposal, to provide you with the most cost-
effective solution for such work. He will provide
additional help in word and deed.
After a running-in time of app. 5 hours, all
accessible screws and nuts (except the carburettor
adjusting screws) must be checked for tightness
and they must be retightened, if required.
It is best to store the equipment in a dry, safe
location with a full fuel tank. There should be no
open flame or similar nearby. For longer periods
without using the equipment (longer than four
weeks), see chapter "7.7 Shutdown and storage".

7.2 Information about the silencer

Ensure the silencer is in perfect condition before
operating the machine. Never touch the silencer
while it is still hot.
Unsatisfactory engine performance, despite a
clean air filter and a correctly adjusted carburettor,
may well be due to a partially blocked or damaged
silencer. Please consult your specialist service
centre.

7.3 Replacing the fuel filter

We recommend having the fuel filter (34) changed
annually by a specialised service centre.
A trained mechanic can carefully remove the fuel
filter via a wire loop through the fuel tank filler.
Ensure that the thicker part of the fuel hose on the
tank wall is not drawn into the fuel tank.

7.4 Air filter maintenance

Contaminated air filters cause a reduction in
engine performance and increase fuel consumption
with more pollutants in the exhaust gas. Engines
are less likely to start readily with a contaminated
air filter.
Carry out the following maintenance jobs regularly.
Before opening the air filter, close the choke
prevent dirt entering the carburettor.
• Turn the wing screw (32) at the air filter cover
(11) anti-clockwise.
• Flip the top of the air filter cover forward and
remove.
• Remove the fabric air filter (33).
• Clean the area around the filter.
When using the equipment all day, clean the fabric
air filter daily. Under extremely dusty conditions,
clean the filter several times during the day as well.
Simply tapping the filter is the best cleaning
method.
Never wash or clean the air filter with heigh
compressed air or by wetting it; never place in
an oil bath or into cleaning solution.
The air filter is blocked, if the engine speed
noticeably drops when the carburettor is correctly
adjusted. Under these circumstances, the filter
needs replacing (part no. 20 48 154).
Low engine speed due to a blocked air filter must
never be compensated by incorrect carburettor
adjustments. This would cause the engine to
overload, resulting in severe engine failure.
Engine failure caused by incorrect care is excluded
from our warranty.
• Insert the new or cleaned fabric air filter into the
casing.
• Position the air filter lid with the lower guiding
pins onto the housing and push into place.
• Secure the filter cover by turning the wing screw
(32) clockwise.
Maintenance instructions
to
ENGLISH 06