Chain Maintenance - Ultranatura BK-100 Mode D'emploi D'origine

Anleitung_BK_100_SPK7__ 14.04.14 13:03 Seite 26
GB
Notice: The sprocket tip on your new saw has been
pre-lubricated at the factory. Failure to lubricate the
guide bar sprocket tip as explained below will result in
poor performance and seizure, voiding the
manufacturer's warranty.
Tools for lubrication
The Lube Gun (optional) is recommended for
applying grease to the guide bar sprocket tip. The
Lube Gun is equipped with a needle nose tip which is
necessary for the efficient application of grease to the
sprocket tip.
To lubricate sprocket tip
Lubrication of the sprocket tip is recommended after
10 hours of use or once a week, which ever occurs
first. Always thoroughly clean guide bar sprocket tip
before lubrication.
Notice: The saw chain does not have to be removed
in order to lubricate the teeth of the chain bar.
Lubrication is possible during work, with the engine
switched off.
Caution: Wear heavy duty work gloves when
handling the bar and chain.
1. Set the On/Off switch to Stop (0)".
2. Clean the guide bar sprocket tip.
3. Using the Lube Gun (optional), insert needle nose
into the lubrication hole and inject grease until it
appears at outside edge of sprocket tip (Fig .20).
4. Rotate saw chain by hand. Repeat lubrication
procedure until the entire sprocket tip has been
greased.
Most guide bar problems can be prevented merely by
keeping the chain saw well maintained.
Insufficient guide bar lubrication and operating the
saw with chain that is TOO TIGHT will contribute to
rapid bar wear.
To help minimize bar wear, the following guide bar
maintenance procedures are recommended.
Caution: Always wear protective gloves during
maintenance operations. Do not carry out
maintenance when the engine is hot.
Turning the chain bar
The bar should be reversed every 8 working hours to
ensure uniform wear.
Keep the bar groove and lubrication hole clean using
the bar groove cleaner supplied optional. (Fig. 21A)
Check the bar rails frequently for wear and, if
necessary, remove the burs and square-up the rails
using the flat file. (Fig. 21B)
Notice: Never fit a new chain to a worn chain bar.
26
Oil passages
Oil passages on the bar should be cleaned to ensure
proper lubrication of the bar and chain during
operation.
Notice: The condition of the oil passages can be
easily checked. If the passages are clear, the chain
will automatically give off a spray of oil within
seconds of starting the saw. Your saw is equipped
with an automatic oiler system.
Automatic chain lubrication.
The chain saw is equipped with an automatic oil
lubrication system with a toothed wheel drive. It
automatically supplies the bar and the chain with the
right quantity of oil. The moment the engine is
accelerated, the oil also starts to flow through the bar
plate more quickly as well.
The chain lubrication system has been set to its
perfect adjustment at the factory. If it requires
adjusting, take the saw to your nearest authorized
after-sales service outlet.
A setting screw for adjusting the chain lubrication
(Fig. 26/ Item A) is located on the underside of the
chain saw. Turning the screw counter-clockwise
increases the chain lubrication, turning it clockwise
decreases the chain lubrication.
To check the chain lubrication, hold the chain saw,
with the chain, over a piece of paper and run it at full
speed for a few seconds. You will be able to judge
the set amount of oil from the paper.

7.2.7 Chain maintenance

Chain sharpening
Chain sharpening requires special tools to ensure that
cutters are sharpened at the correct angle and depth.
For the inexperienced chain saw user, we
recommend that the saw chain be professionally
sharpened by the nearest professional Service
Center. If you feel comfortable sharpening your own
saw chain, special tools are available from the
professional Service Center.
Chain sharpening (Fig. 22)
Sharpen the chain using protective gloves and a
round file of ø3/16" (4.8mm).
Always sharpen the cutters only with outward strokes
(Fig. 23) observing the values given in Fig. 22.
After sharpening, the cutting links must all have the
same width and length.
Notice: A sharp chain produces well-defined chips.
When your chain starts to produce sawdust, it is time
to sharpen.