Craftsman 151.74326 Operator's Manual page 24

SAW CHAIN SHARPENING
Have your chain sharpened professionally
at a qualified service center, or sharpen the
chain yourself by using a proper sharpening
kit. Also observe the sharpening instructions
supplied with the sharpening kit.
The height difference between the cutting tip
and the ridge is the depth gauge setting.
(Fig. 45)
When you sharpen the cutting tip, the depth
gauge setting between the tip and the side
plate ridge will decrease. To maintain optimal
cutting performance the ridge has to be filed
down to achieve the recommended depth
gauge setting.
TO SHARPEN THE CHAIN, PROCEED AS
FOLLOWS:
■ Use protective gloves.
■ Ensure the chain is correctly tensioned on
the guide bar.
■ Use a round file, whose diameter is 1.1
times the cutting tooth depth. Make sure 20%
of the file diameter is above the cutter's top
plate (See Fig. 44 and 45).
NOTE: A file guide is available from most
chainsaw retailers and is the easiest way to
hold the file at the correct position.
■ File at an angle perpendicular to the bar,
and at an angle of 25° to the direction of
travel. (Fig. 44)
■ File each tooth from the inside towards
outside only. File one side of the chain first
than turn the saw around and repeat the
process.
■ Sharpen each tooth equally by using the
same number of strokes.
■ Keep all cutter lengths equal (See Fig. 45).
Each time the cutting tip is sharpened the
cutting length is reduced. When the cutter
length is reduced to 0.16 inch (4 mm) the
chain is worn out and should be replaced.
CARE AND MAINTENANCE
24 ― English
■ The depth gauge setting is also reduced
with each sharpening. Every 5 sharpenings
use a depth gauge measuring tool to check
the height between the cutting tip and the
ridge (see Fig. 45). When necessary use a
flat file to file down the ridge to achieve the
.025 inch depth gauge setting. Depth gauge
measuring tools are available from most
chainsaw retailers.
■ If the saw is not functioning properly, take it
to a qualified chainsaw service center to have
saw inspected for possible repair. Use only
identical parts as listed in this manual.
STORAGE
■ Store the product and its accessories in
a dry, frost-free place. The ideal storage
temperature is between 50
■ Always store the product in a place that is
inaccessible to children.
■ We recommend using the original package
for storage or covering the product with
a suitable cloth or enclosure to protect it
against dust.
TRANSPORTATION
■ Switch the product off and remove the
battery pack before transporting it anywhere.
■ Attach the blade cover to the saw blade.
Attach other transportation guards, if
applicable.
■ Always carry the product by its gripping
handles.
■ Protect the product from any heavy impact
or strong vibrations which may occur during
transportation in vehicles.
■ Secure the product to prevent it from
slipping or falling over.
o o
F and 80 F.