Carburettor Adjustment; Air Filter Maintenance - Solo 142 Instructions D'emploi

9.4 Carburettor adjustment

The carburettor has been adjusted optimally at the
factory. Subject to the operational altitude
(mountains or low lying areas), the carburettor may
require readjustment.
Fig. 20
The carburettor has 3 adjusting screws:
• Idling end-stop screw "T"
• Low speed mixture screw "L"
• High speed mixture screw "H"
Only qualified mechanics must adjust the regulating
screws for idle mixture "L" and full load mixture "H".
Turn the idling end-stop screw "T" to adjust the idling
speed in accordance with the details provided in the
specification. Use an engine rev counter for this job.
• If the idling speed is too high, turn the idling end-
stop screw "T" anti-clockwise.
• If the idling speed is too low (engine stops) turn
the idling end-stop screw "T" clockwise until the
engine runs smoothly.
With the throttle set to idle, the cutting tool
must not, under any circumstances, rotate!
If the idling speed cannot be set correctly with the
idling end-stop screw "T", request an authorised
service centre to tune the carburettor.
The following instructions are for authorised
service shops
D-CUT carburettors:
Use the D-CUT carburettor key to adjust the idle
mixture screw "L" and the full load mixture screw "H".
Carburettors with limiter caps:
The regulating screws for idle mixture and full load
mixture can only be adjusted in a limited range.
Clean the air filter before adjusting the low speed
screw.
Let the engine run warm before adjusting the engine
speed.
The carburettor is tuned for optimum engine
performance. Use a rev counter to tune the
carburettor correctly!
Do not adjust the engine to a higher speed.
Excessive engine speed can lead to major engine
damage!
Operating and maintenance instructions

9.5 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.
Fig. 21
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.
to
ENGLISH 17