McCulloch BC2236, Operator'S Manual

Page: 66 / 84

MAINTENANCE
66 – English
Spark plug
The spark plug condition is influenced by:
• Incorrect carburetor 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.
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
suppressor.
Note: Use only JONSERED 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 JONSERED.