18
Do not at any time let brake fluids, gasoline, petroleum-
based products, penetrating oils, etc., come in contact
with plastic parts. Chemicals can damage, weaken, or
destroy plastic, which could result in serious personal
injury.
All chainsaw service, other than the items listed in these
maintenance instructions, should be performed by
competent chainsaw service personnel.
GUIDE BAR
Most guide bar problems can be avoided by keeping the
product well maintained. Incorrect filing and non-uniform
cutter and depth gauge settings cause most guide bar
problems, primarily resulting in uneven bar wear. As the
bar wears unevenly, the rails widen, which may cause
chain clatter and difficulty in making straight cuts.
Insufficient guide bar lubrication and operating the
product with a chain this is too tight will contribute to
rapid bar wear. To help minimise bar wear, the guide bar
maintenance is recommended.
When the guide bar is dismounted, remove any sawdust
from the “GROOVE“ in the guide bar rail.
Disassemble the saw chain and guide bar in reversed
order of assembly.
The circular groove of the guide bar will wear particularly
on the lower edge with time. When replacing the chain
turn the chain bar 180° to allow even wear, thus
extending guide bar life.
Rotate the guide bar occasionally to prevent uneven
wear. The guide bar ‘rail’ should always have a square
edge.
To check the guide bar “RAIL“ for wear: Hold a ruler
(straight edge) against the side of the guide bar and
“CUTTER SIDE PLATES“.
If there is a gap between the ruler and guide bar the
guide bar “RAIL“ is normal. If there is no gap (ruler flush
against the side of the guide bar) the guide bar “RAIL“ is
worn and needs to be replaced.
(See Fig.14 & 15)
Assemble the guide bar and saw chain as described
under “Assembling the guide bar and chain”.
ShARPENING ThE ChAIN
WARNING! Only sharpen the saw chain yourself if you are
trained and have experience! Use proper tools to
sharpen the saw chain!
It is highly recommended that, once the chain loses it’s
ability to cut cleanly and safely, it is replaced. It is
possible, however, to sharpen the existing chain if done
carefully.
Have your saw chain sharpened professionally at an
authorised service centre or sharpen the chain yourself
using a proper sharpening kit. Follow the sharpening
instructions supplied with a sharpening kit.
To sharpen the chain proceed as follows:
Tighten the chain tension enough that the chain does
not wobble. Do all of your filing at the midpoint of the bar.
Wear gloves for protection.
Use a round file, whose diameter is 1.1 times the cutting
tooth depth. Make sure 20% of the file diameter is above
the cutter’s top plate.
A file guide is available from most reputable tool
merchants and is the easiest way to hold the file at the
correct position. (Fig.16)
File at an angle perpendicular to the bar, and at an angle
of 25° to the direction of travel. (Fig.17)
File each tooth from the inside towards outside only.
File one side of the chain first than turn the product
around and repeat the process.
Sharpen each tooth equally by using the same number of
strokes.
Keep all cutter lengths equal.
Check the safety depth gauge height every 5
sharpenings.
If the depth gauges are also trimmed it is essential that
the original profile be restored.
Use a depth gauge measuring instrument to check the
height of the depth gauge.
Depth gauge measuring jigs are available from most
reputable tool merchants.
NOTE: Dull or improperly sharpened chain can cause
excessive motor speed during cutting which may result
in severe motor damage.
AIR FILTER
Never operate the chainsaw without the air filter. Dust
and dirt will be drawn into the engine and damage it.
Keep the air filter clean! The air filter must be cleaned or
replaced after every 20 hours of use.
CLEANING ThE AIR FILTER (FIG.18)
1.
Ensure the stop switch (Fig. 1/pos. 14) is set to ‘0’
stop.
2.
Remove the air filter cover (G) by removing the clip.
3. Open the air filter flap (H).
4. Lift out the air filter
5.
Clean the air filter. Wash the filter in clean, warm,
soapy water. Rinse in clear, cool water. Air dry
completely before refitting. It is advisable to have a
supply of spare filters.
6. Insert the air filter.
SPARK PLUG (FIG.19 & 20)
NOTE: To ensure that the saw’s engine retains its power,
the spark plug must be clean and have the correct
electrode gap (0.6-0.7 mm). The spark plug must be
cleaned or replaced after every 20 hours of service.
