Oiling The Chain; Guide Bar Maintenance - TrimmerPlus PS720r Manual Del Operador

OILING THE CHAIN

The pole saw chain is self-lubricating. Oil is dispersed onto the
chain as the unit is used. Keep an adequate amount of oil in the
oil tank. Use the bar-chain oil provided in the hardware pack.
Always use bar-chain and sprocket oil or similar chain saw oil.
Setting the Oil Adjustment Screw
The Oil Adjustment Screw is located on top of the gearbox
assembly (Fig. 12).
Gearbox Assembly
1. Insert a 3/32-inch Allen wrench into the oil adjustment screw.
2. Turn the screw counterclockwise to increase oil flow to the chain, or
3. Turn the screw clockwise to restrict the oil flow to the chain.
WARNING:
If the oil tank runs out, the oil ajustment
screw hole becomes clogged, or the chain fails to get
proper lubrication in any fashion, the chain will overheat
and cause irreversible damage to the unit and may
result in severe injury. Excessive heat from friction can
lead the chain to catastrophically fail and come off the
bar while operating.

GUIDE BAR MAINTENANCE

WARNING:
Ensure that the unit is off and the spark
plug is disconnected (gas powerheads) before
performing any maintenance on your saw.
NOTE: Proper maintenance of the guide bar is essential to the
performance of your pole saw. Proper guide bar
maintenance will keep your saw in good working order.
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 a
chain that is too tight will contribute to rapid bar wear. Refer to
Saw Chain Tension Adjustment and Oiling the Chain.
10
MAINTENANCE AND REPAIR INSTRUCTIONS
Oil
Adjustment
Screw
Fig. 12
To help minimize bar wear, the following guide bar maintenance is
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 the saw has been heavily used or if the saw chain
appears dirty. Rails should always be cleaned every time the saw
chain is removed.
To clean guide bar rails:
1. Remove chain guard, bar, and chain. Refer to Saw Chain
Replacement / Installation.
2. Using a screwdriver, putty knife, wire brush or other similar
instrument, clear residue from the rails on the guide bar (Fig. 13).
This will keep the oil passages open to provide proper
lubrication to the bar and chain.
3. Ensure the sprocket in the bar turns freely during cleaning.
4. Reinstall the bar, chain, chainguard, screw, and bar retaining
nuts. Refer to Saw Chain Replacement / Installation.
Oil Passages
Oil passages at the bar pad 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.
Fig. 13