To Sharpen The Saw Chain; To Tension The Saw Chain (Standard Chain Adjustment); To Lubricate The Cutting Equipment - McCulloch CS 340 Manual De Usuario

To sharpen the saw chain

The cutter
The cutting part of the saw chain is called the cutter and
consists of a cutting tooth (A) and the depth gauge (B).
The cutters cutting depth is determined by the difference
in height between the two, the depth gauge setting (C).
(Fig. 82)
When you sharpen a cutting tooth there are four
important factors to remember:
• Filing angle.
(Fig. 83)
• Cutting angle.
(Fig. 84)
• File position.
(Fig. 85)
• Round file diameter.
(Fig. 86)
To sharpen the cutting teeth
Use a round file and a file gauge to sharpen the cutting
Technical data on page 24 for information on
teeth. See
the recommended dimension of the file and gauge for
the saw chain installed on your product.
1. Make sure that the saw chain is correctly tensioned.
A slack chain will move sideways, making it more
difficult to sharpen correctly.
2. File all teeth on one side first. File the cutting teeth
from the inside face and reduce the pressure on the
return stroke.
3. Turn the product over and file the teeth on the other
side.
4. File all the teeth to the same length. When the length
of the cutting teeth is reduced to 4 mm (5/32") the
saw chain is worn out and must be replaced. (Fig.
87)
To adjust the depth gauge setting
Sharpen the cutting teeth before you adjust the depth
Technical data on page 24 . When
gauge setting. See
you sharpen the cutting tooth (A), the depth gauge
setting (C) will decrease. To maintain optimal cutting
performance, the depth gauge (B) has to be filed down
to achieve the recommended depth gauge setting. See
Technical data on page 24 to find the correct depth
gauge setting for your particular chain.
(Fig. 88)
(Fig. 89)
Note: This recommendation assumes that the length of
the cutting teeth is not reduced excessively.
Use a flat file and depth gauge tool to adjust the depth
gauge.
280 - 007 - 14.10.2019
1. Put the depth gauge tool above the saw chain.
Detailed information regarding how to use the depth
gauge tool will be found on the package of the depth
gauge tool.
2. Use the flat file to file off the tip of the depth gauge
that protrudes through the depth gauge tool. The
depth gauge setting is correct when you no longer
feel resistance as you draw the file along the depth
gauge tool.
To tension the saw chain (standard chain
adjustment)
Note: Check the tension of a new saw chain frequently
during its running-in period.
1. Loosen the guide bar nuts that hold the clutch cover.
Use the combination wrench. (Fig. 90)
2. Tighten the guide bar nuts by hand as tight as you
can.
3. Lift the top of the guide bar and extend the saw
chain by tightening the chain tensioning screw. Use
the combination wrench. Tighten the saw chain until
it does not hang down from the bottom of the guide
bar. (Fig. 91)
4. Tighten the guide bar nuts using the combination
wrench and lift the tip of the guide bar at the same
time. (Fig. 92)
5. Make sure that you can pull the saw chain round
freely by hand and that it does not sag. (Fig. 93)
To tension the saw chain (knob and wheel
chain adjustment)
Note: Examine the tension of a new saw chain
frequently during its running-in period.
1. Release the knob by folding it out. (Fig. 94)
2. Turn the knob counterclockwise to loosen the guide-
bar cover. (Fig. 95)
3. Adjust the tension on the chain by turning the chain
tensioner wheel down (+) for tighter tension and up
(-) to loosen the tension. Hold the tip of the guide bar
while you adjust the tension. (Fig. 96)
4. Tighten the sprocket cover by turning the knob
clockwise while lifting the tip of the guide bar. (Fig.
97)
5. Fold the knob in to lock the saw chain. (Fig. 98)
6. Make sure that you can pull the saw chain round
freely by hand and that it does not sag. (Fig. 93)

To lubricate the cutting equipment

To do a check of the saw chain lubrication
Do a check of the chain saw lubrication each time you
refuel.
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