McCulloch MAC 291 - DEBRIS SHIELD KNIFE SHARPENING; STORING A UNIT; REMOVING A UNIT FROM STORAGE

8
MAI
NTENANCE
I NSTRUCTIONS
I
8.9.
DEBRIS
SHIELD
KNIFE
SHARPENING
1 . Remove
cutter
knife from
debris
shield.
2. Place
knife
in a bench
vise.
Sharpen
knife using
a
flat file,
being
careful
to maintain
the angle
of cutting
edge.
File in one
direction
only.
Figure 8-10A
B. Pour
1 teaspoon of
clean 2-cycle
oil into
the com-
bustion
chamber. Pull
starter
rope slowly
several
times
to coat internal
components.
Replace
spark
plug.
(Figure
8-10A)
9.
Store unit in a
cool, dry
place
away
from any
source
of ignition
such as an oil
burner, water
heater,
etc.
8.1 1.
REMOVING
A UNIT FROM
STORAGE
Figure
8-9A
3.
Reinstall
knife.
Tighten
fasteners
securely.
(Figure
B-9A)
8.10.
STORING
A UNIT
Clean
and
gap
spark
plug
or install
a new spark
plug
with
proper
gap.
Prepare
unit for operation.
Fillfueltank
with
proper
fuel/ oil
mixture.
See Fuel
and
Lubrication
Section.
1.
Remove spark
plug.
2. Pull starter
rope briskly
to
clear excess
oil
from
combustion
chamber.
3.
fi[Failure
to
follow
these
steps
may cause
varnish
to
\l/form
in
the carburetor,
difficult
starting
or
perma-
nent
damage
after
storage.
1. Perform
all thd
general
maintenance
recommended
in
the Maintenance
Section
of
your
User
Manual.
2. Clean
exterior
of engine,
drive
shaft
assembly,
de-
bris
shield
and stringhead.
3.
Drain
fuelfrom
the
fueltank.
4.
After fuel
is drained,
start
engine.
5.
Run engine
at idle
until unit
stops.
This
will
purge
the
carburetor
of fuel.
6. Allow
engine
to
cool
(approximately
5 minutes),
7.
Using
a spark
plug
wrench,
remove
the spark
plug.
4.
5.
l7