Husqvarna 245RX Trimmer User Manual


 
English 31
MAINTENANCE
Spark plug
The spark plug condition is inuenced by:
Incorrect carburettor adjustment.
An incorrect fuel mixture (too much or incorrect type of
oil).
A dirty air lter.
These factors cause deposits on the spark plug electrodes,
which may result in operating problems and starting
difculties.
If the machine is low on power, difcult to start or runs poorly
at idle speed: always check the spark plug rst before taking
any further action. If the spark plug is dirty, clean it and check
that the electrode gap is 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.
Sharpening grass cutters and grass
blades
See the cutting attachment packaging for correct
sharpening instructions.
Sharpen blades and cutters using a single-cut at le.
Sharpen all edges equally to maintain the balance of the
blade.
Filing the saw blade
See the cutting attachment packaging for correct
sharpening instructions. A correctly led blade is essential
for working efciently and to avoid unnecessary wear to
the blade and clearing saw.
Make sure that the blade is well supported when you le
it. Use a 5.5 mm round le with a le holder.
The ling angle is 15°. File alternate teeth to the right and
those in between to the left. If the blade has been heavily
pitted by stones it may be necessary to dress the top
edges of the teeth with a at le, in exceptional cases. If
so, this should be done before ling with a round le. The
top edges must be led down by the same amount for all
the teeth.
Adjust the blade setting. This should be 1 mm.
!
WARNING! Always stop the engine before
doing any work on the cutting attachment.
This continues to rotate even after the
throttle has been released. Ensure that the
cutting attachment has stopped completely
and disconnect the HT lead from the spark
plug before you start to work on it.
!
WARNING! Always discard a blade that is
bent, twisted, cracked, broken or damaged
in any other way. Never attempt to straighten
a twisted blade so that it can be reused. Only
use original blades of the specied type.
!
WARNING! Using an incorrect cutting
attachment or an incorrectly sharpened
blade increases the risk of kickback.