Information About The Silencer - Solo 121 Instruction Manual

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!

9.5 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.
Operating and maintenance instructions
9.6 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. 18
Before opening the air filter, close the choke
prevent dirt entering the carburettor.
Turn air filter lid (1) clockwise (viewed onto the air
filter lid), and remove the lid. Remove foam filter (2)
from the lid and clean the area around the filter.
Clean the foam filter daily, if the equipment is used
all day. Clean more frequently, if you are working
under very dusty conditions. Simply knocking the
filter casing or blowing dust from the filter bowl are
the best methods of daily maintenance. Immediately
replace the foam filter, if it shows any sign of
damage. Engine failure due to incorrect
maintenance and care are excluded from our
warranty.
Insert the new or cleaned foam filter into the air
filter lid. Position the lid onto the filter casing,
guided by the guide spigot, and lock into place with
an anti-clockwise rotation.
Never insert moist or wet foam filters!
to
ENGLISH 17