The spark plug condition is inﬂuenced by:
Incorrect carburetor adjustment.
An incorrect fuel mixture (too much or incorrect type
A dirty air ﬁlter.
These factors cause deposits on the spark plug
electrodes, which may result in operating problems and
If the machine is low on power, difﬁcult to start or runs
poorly at idle speed: always check the spark plug ﬁrst
before taking any further action. If the spark plug is dirty,
clean it and check that the electrode gap is 0.020 inch (0,5
mm). The spark plug should be replaced after about a
month in operation or earlier if necessary.
CAUTION! Always use the recommended spark plug
type! Use of the wrong spark plug can damage the piston/
cylinder. Check that the spark plug is ﬁtted with a
Note: Use only HUSQVARNA replacement parts. Use of
other brands of replacement parts can cause damage to
your unit or injury to the operator or others. Your
warranty does not cover damage or liability caused by
the use of accessories and/or attachments not
speciﬁcally recommended by HUSQVARNA.