Air Intake Screen; Spark Plug; Air Filter - Husqvarna 425 BVS Operator's Manual

Air intake screen

Check that the air intake is not blocked on all sides
including the underside, for example, by leaves or
rubbish. A clogged air intake reduces the machine's
blowing capacity and increases the engine's working
temperature, which can result in engine failure. Stop the
engine and remove the object.
WARNING! Never use the blower if the
!
screen is not in place. Before use, check
that the screen is in place and
undamaged.

Spark plug

The spark plug condition is influenced by:
• Incorrect carburettor adjustment.
• An incorrect fuel mixture (too much or incorrect type
of oil).
• A dirty air filter.
These factors cause deposits on the spark plug
electrodes, which may result in operating problems and
starting difficulties.
Clean the outside of the spark plug. Remove it and check
the electrode gap. Adjust the gap to 0,6-0,7 mm or
replace the spark plug. Check that the spark plug is fitted
with a suppressor.
0,6-0,7
CAUTION! Always use the recommended spark plug
type! Use of the wrong spark plug can damage the piston/
cylinder. Replace the plug twice a year.
16 – English
MAINTENANCE
Air filter
The air filter must be regularly cleaned to remove dust
and dirt in order to avoid:
• Carburettor malfunctions
• Starting problems
• Loss of engine power
• Unnecessary wear to engine parts.
• Excessive fuel consumption.
Check the air cleaner every 25 hours of use or nore
frequently if used under dusty conditions.
Avoid contact with hot surfaces on muffler, cylinder etc.
Contact can result in burns to the skin.
Cleaning the air filter
1 Remove the air filter cover and air filter.
2 Use neutral detergent and warm water to clean the
filter element. Ensure that the filter is dry before
refitting it. (1)
3 Install the air filter.
4 Never forget to attach the screen. If the screen is not
attached, the cleaner will not seal properly and the
dusts come into the cylinder. (2)
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.
• Refit the air filter and air filter cover.