Maintenance; Carburettor; Air Filter - Husqvarna 143RII Operator's Manual

Carburettor

Adjusting the idle speed (T)
Check that the air filter is clean. When the idle speed is
correct, the cutting attachment should not rotate. If
adjustment is required, close (turn clockwise) the idle
adjustment screw T, with the engine running, until the
cutting attachment starts to rotate. Open (turn
anticlockwise) the screw until the cutting attachment
stops. The idle speed is correctly set when the engine
runs smoothly in all positions, and there is a clear margin
to the speed at which the cutting attachment starts to
rotate.
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.
Air filter
Clean the filter every 25 hours, or more regularly if
conditions are exceptionally dusty.
Set the choke control in the choke position.
26 – English

MAINTENANCE

Cleaning the air filter
Remove the air filter cover. Remove the dust around the
filters.
Take out the filters.
Clean the foam plastic filter. (1)
Wash the filter in clean, warm soapy water.
Make sure that the filter is dry befor oiling it. Moisten the
foam plastic filter with Husqvarna two-stroke engine oil.
Put the filter in a plastic bag and pour the filter oil over it.
Knead the plastic bag to distribute the oil. Squeeze the
excess oil out of the filter inside the plastic bag and pour
off the excess before fitting the filter to the machine.
Note:
Never use oil intended for four-stroke engines. This may
damage the foam plastic filter.
Do not use mixture gasoline! This type of gasoline does
not contain enough oil, so the filter will become dry after
a few hours.
Felt filter (2)
Clean the filter by knocking the filter carefully against the
hand palm or blow the aiir from inside to outward.
Do not wash the felt filter, since kneeding will make the
filter shrink and scrubbing will remove fibre of filter!
An air filter that has been in use for a long time cannot be
cleaned completely. The filter must therefore be replaced
with a new one at regular intervals. A damaged air filter
must always be replaced.