Troy-Bilt TB4516CC - Manual (Page 17)

17
Sprocket Tip 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.
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.
Lubrication of the sprocket tip is
recommended after each saw use. Always
thoroughly clean guide bar sprocket tip
before lubrication.
CAUTION:
Fig. 28
To lubricate the sprocket tip:
1. Unplug the chain saw from the power source.
NOTE: It is not necessary to remove the saw chain to
lubricate the guide bar sprocket tip. Lubrication
can be done on the job.
2. Clean the guide bar sprocket tip.
3. Using the Lube Gun (optional), insert tip of lube gun
into the lubrication hole and inject grease until it
appears at outside edge of sprocket tip (Fig. 32).
4. Make sure that the Chain Brake® is deactivated.
Rotate saw chain by hand. Repeat lubrication
procedure until the entire sprocket tip has been
greased.
GUIDE BAR MAINTENANCE
Frequent lubrication of the guide bar is required. Proper
maintenance of the guide bar, as explained in this
section, is essential to keep your saw in good working
condition.
MAINTENANCE AND REPAIR INSTRUCTIONS
Ensure that the
power cord is
disconnected before performing any
maintenance on your saw.
WARNING:
Always use
protective gloves
when handling the saw chain.
WARNING:
Maintenance Procedures
Most guide bar problems can be prevented merely by
keeping the chain saw 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 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:
BAR WEAR - Turn guide bar frequently at regular
intervals (for example, after 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 saw has been used
heavily or if saw chain appears dirty. Rails should always
be cleaned every time saw chain is removed.
OIL PASSAGES - Oil passages on the bar should be
cleaned to ensure proper lubrication of the bar and chain
during operation. This can be done using a soft wire
small enough to insert into the oil discharge hole.
NOTE: 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.
Cleaning Bar Rails
1. Remove sprocket cover, bar and chain. Refer to the
Saw Chain Tension Adjustment section.
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 (Fig. 29).
3. Reinstall the bar, chain, sprocket cover and bar bolt
knob. See Section Install the Guide Bar / Saw Chain
for more information.
Fig. 29