Shindaiwa SBA-P24, Owner'S/Operator'S Manual

Page: 11 / 44

11
50-hour Maintenance
Every 50 hours of operation
(more frequently in dusty or
dirty conditions):

Remove and clean the cylinder cover
and clean dirt and debris from the cylin-
der cooling fins.

Lubricate the gearcase. To perform
this operation, first remove the gearcase
from the outer tube as follows:
CAUTION!
Do not remove the D-shaped shim
washer from the gearcase clamp! The
shim washer prevents damage from
overtightening the tube clamp screw.
Sharpening the Chain Long Term Storage
Whenever the unit will not be used for
30 days or longer, use the following
procedures to prepare it for storage:

Clean external parts thoroughly.

Drain bar oil from oil tank.

Store the unit in a clean, dust-free area.

Lubricate gearcase.

Cover the blade with the blade cover.
Gearcase
Clamp
Grease Fitting
Index
Bolt
Using a lever-type grease gun, pump
lithium-base grease (about 10 grams) into
the grease fitting until you see old grease
being purged from the gearcase, which
can be seen in the outer tube cavity. Clean
up excess grease, then reassemble the
gearcase onto the outer tube.
When the cutting edges of the chain cut-
ters become dull, they can be re-sharpened
with a few strokes of a file.
In addition, inspect the chain for correct
adjustment (more frequently with a new
chain). The chain should feel snug but still
pull freely.
Sharpening Instructions
IMPORTANT!
File all the cutters to the same angle and
depth! Unequal filing may cause the saw
to vibrate or cut erratically!
1. Using a 4.5 mm round file, sharpen all
cutters to a 30° angle. Make sure that
one fifth (0%) of the file’s diameter is
always held above the cutter’s top plate.
NOTE:
For consistent filing angles, use a filing guide
such as Oregon® p/n 3169 or equivalent.
. After all cutters are sharpened, use
a depth gauge joiner (Oregon® p/n
106738 or equivalent) to measure the
height of each depth gauge.
3. As required, lower the depth gauges to
a height of 0.00 inch. Use a flat file;
(Oregon® p/n 111 or equivalent.)
4. After all depth gauges have been
adjusted, use a flat file to round each
depth gauge leading edge to its original
curvature and angle.
1. Loosen the gearcase clamp bolt.
. Remove the index bolt from the
gearcase.
3. Slide the gearcase out of the tube.