Husqvarna 226HD60S [16/471] Carburettor
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Husqvarna 226HD60S [16/471] Carburettor

Husqvarna 226HD60S [16/471] Carburettor
MAINTENANCE
16 – English
Carburettor
Your Husqvarna product has been designed and
manufactured to specifications that reduce harmful
emissions. After the engine has used 8-10 tanks of fuel
the engine will be run-in. To ensure that it continues to run
at peak performance and to minimise harmful exhaust
emissions after the running-in period, ask your dealer/
service workshop (who will have a rev counter at their
disposal) to adjust your carburettor.
Function
• The carburettor governs the engine’s speed via the
throttle control. Air and fuel are mixed in the
carburettor. The air/fuel mixture is adjustable. Correct
adjustment is essential to get the best performance
from the machine.
• Adjusting the carburettor means that the engine is
adapted to local operating conditions, e.g. climate,
altitude, petrol and the type of 2-stroke oil.
Adjusting the idle speed
The T-screw regulates the throttle setting at idle speed. If
the T-screw is turned clockwise this gives a higher idle
speed; turning it anti-clockwise gives a lower idle speed.
Before any adjustments are made, make sure that the air
filter is clean and the air filter cover is fitted.
Adjust the idle speed with the idle adjustment screw T, if
adjustment is necessary. First turn the idle adjustment
screw T clockwise until the blades start to move. Then
turn the idle adjustment screw T anticlockwise until the
blades stop. The idle speed is correctly adjusted when the
engine runs smoothly in every position. There should also
be a clear margin to the speed at which the blades start
to move. Rec. idle speed: See the Technical data section.
The blades must also remain stationary when the choke
control is in the start throttle position.
Muffler
CAUTION! Some mufflers are fitted with a catalytic
converter. See chapter on Technical data to see whether
your machine is fitted with a catalytic converter.
The muffler is designed to reduce the noise level and to
direct the exhaust gases away from the operator. The
exhaust gases are hot and can contain sparks, which may
cause fire if directed against dry and combustible
material.
Some mufflers are equipped with a special spark arrestor
mesh. If your machine has this type of muffler, you should
clean the mesh at least once a week. This is best done
with a wire brush.
On mufflers without a catalytic converter the mesh should
be cleaned weekly, or replaced if necessary. On mufflers
fitted with a catalytic converter the mesh should be
checked, and if necessary cleaned, monthly. If the mesh
is damaged it should be replaced. If the mesh is
frequently blocked, this can be a sign that the
performance of the catalytic converter is impaired.
!
WARNING! The complete clutch cover
and gear housing must be fitted before
the machine is started, otherwise the
clutch may come loose and cause
personal injury.
!
WARNING! If the idle speed cannot be
adjusted so that the cutting attachment
stops, contact your dealer/service
workshop. Do not use the machine until
it has been correctly adjusted or
repaired.
T
H1156713-38,226HD60S 75S_1.fm Page 16 Monday, May 12, 2014 11:03 AM

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HI 156713 38 226HD60S75Sl fm Page 16 Monday May 12 2014 11 03 AM MAINTENANCE Carburettor The blades must also remain stationary when the choke control is in the start throttle position Your Husqvarna product has been designed and manufactured to specifications that reduce harmful emissions After the engine has used 8 10 tanks of fuel the engine will be run in To ensure that it continues to run at peak performance and to minimise harmful exhaust emissions after the running in period ask your dealer service workshop who will have a rev counter at their disposal to adjust your carburettor WARNING The complete clutch cover and gear housing must be fitted before the machine is started otherwise the clutch may come loose and cause personal injury Function The carburettor governs the engine s speed via the throttle control Air and fuel are mixed in the carburettor The air fuel mixture is adjustable Correct adjustment is essential to get the best performance from the machine Adjusting the carburettor means that the engine is adapted to local operating conditions e g climate altitude petrol and the type of 2 stroke oil Adjusting the idle speed The T screw regulates the throttle setting at idle speed If the T screw is turned clockwise this gives a higher idle speed turning it anti clockwise gives a lower idle speed Before any adjustments are made make sure that the air filter is clean and the air filter cover is fitted WARNING If the Idle speed cannot be adjusted so that the cutting attachment stops contact your dealer servlce workshop Do not use the machine until it has been correctly adjusted or repaired Muffler CAUTION Some mufflers are fitted with a catalytic converter See chapter on Technical data to see whether your machine is fitted with a catalytic converter The muffler is designed to reduce the noise level and to direct the exhaust gases away from the operator The exhaust gases are hot and can contain sparks which may cause fire if directed against dry and combustible material Adjust the idle speed with the idle adjustment screw T if adjustment is necessary First turn the idle adjustment screw T clockwise until the blades start to move Then turn the idle adjustment screw T anticlockwise until the blades stop The idle speed is correctly adjusted when the engine runs smoothly in every position Th ere should also be a clear margin to the speed at which the blades start to move Rec idle speed See the Technical data section Some mufflers are equipped with a special spark arrestor mesh If your machine has this type of muffler you should clean the mesh at least once a week This is best done with a wire brush On mufflers without a catalytic converter the mesh should be cleaned weekly or replaced if necessary On mufflers fitted with a catalytic converter the mesh should be checked and if necessary cleaned monthly If the mesh is damaged it should be replaced If the mesh is frequently blocked this can be a sign that the performance of the catalytic converter is impaired 16 English

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