6 ■ BAR/CHAÍN MAINTENANCE
6-í. GUIDE BAR MAINTENANCE
WARNING
Ensure that the power cord is
disconnected before performing any
maintenance on your saw.
Proper maintenance of the guide bar,
as explained In this section, is
essential to keep your saw in good
working order.
GUIDE BAR MAINTENANCE :
Most guide bar problems can be
prevented merely by keeping the chain
saw weii 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 ciatter and difficulty in
making straight cuts.
Insufficient guide bar lubrication and
operating the saw with a chain that is
TOO TIGHT will corrtribute to rapid bar
wear {see Section 6-2).
To help minimize bar wear, the
following guide bar maintenance is
recommended.
BAR WEAR- Turn guide bar frequently
at regular intervals (for example, after
five(5) hours of use), to ensure even
wear on top and bottom of bar.
BAR GROOVES - Bar grooves (or rails
which support and carry the chain)
should be cleaned if the saw has been
heavily used or if the saw chain
appears dirty. Rails should aiways be
cleaned every time the saw chain is
removed.
OIL PASSAGES- Oil passages at bar
pad should be cleaned to ensure proper
lubrication of the bar and chainduring
operation. This can be done using a
soft wire small enough to insert into the
oil discharge hole.
TO CLEAN GUIDE BAR RAILS:
1. Remove sprocket cover, bar and
chain (see Section 3-4).
2. Using a screwdriver, putty knife, wire
brush or other similar instrument,
clear residue from the rails on the
guide bar.
This will keep the oil passages open
to provide proper lubrication to the
bar and chain (Figure 6-1 A),
3. Reinstall the bar, chain and bar bolt
retaining nuts. (See Section 3-4).
6-1A
6-2, CHAIN MAINTENANCE
INSTRUCTIONS
WARNING
Unless you have experience and speci
alized training for dealing with kickback
(see Safety Precautions), always use a
low-kickback saw chain, which significa
ntly reduces the danger of kickback.
Low-kickback saw chain does not com
pletely eliminate kickback. A low-
kickback or “safety chain", should never
be regarded as total protection against
injury,
A low kick saw chain should always be
used in combination with other kickback
protection devises such as a hand
guard and reduced kickback guide bar
supplied with the your unit.
Always use a replacement saw chain
designed as "low-kickbaok” or a saw
chain which meets the low-kickback
performance.
A standard saw chain (a chain which
does not have the kickback reducing
guard links) should only be used by an
experienced professional chain saw
operator.
What is a Low-Kickback Saw Chain?
A low-kickback saw chain is a chain
which has met the kick-back perform
ance requirements of ANSI B175.1. Do
not use other replacement chain unless
it has met theser equirements for your
specific model.
By keeping the saw chain in good
working condition and correctly serviced
as recommended in this manual, you
will be able to maintain the safety
system of your chain saw over the life
of the product.
WARNING
Never remove, modify or make
inoperative any safety device furnished
with your unit.The hand guard, reduced
kickback guide bar and low kick back
saw chain are major safety features
provided for your protection.
14
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