Maintenance, Engine, Air cleaner – MTD 24650-9 User Manual
Page 9: Lubrication, Cutting blade
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MAINTENANCE
N
'■’V
"N
AC
WARNING {
Disconnect
spark
plug
wire
and
ground
it
against
the
engine
before
performing
any repairs or maintenance.
ENGINE
Refer
to
the
separate
engine
manual
packed
with
your
unit
for
all
engine
maintenance
procedures.
Read
instructions carefully.
AIR CLEANER
The
air
cleaner
prevents
damaging
dirt,
dust,
etc.,
from
entering
the
carburetor and being forced into the engine
and is important to engine life and performance.
Never
run
your
engine
without
air
cleaner
completely
assembled.
To
service
air
cleaner;
refer
to
the
separate
engine
manual packed with your unit.
LUBRICATION
Wheels - The wheels require no lubrication.
Flails and Fingers - If the unit is disassembled for any
reason,
lubricate
the
flails
and
fingers
with
a
light
oil
(engine oil may be used).
CUTTING BLADE
The
cutting
blade
may
be
removed
for
grinding
or
replacement as follows.
1.
Lower the upper guide extension.
2.
Block up the housing. See figure 15.
3.
Remove the four elastic lock nuts from the back
of the housing using a 1/2" wrench. Refer to figure
13.
Separate the shredder into two halves.
4.
Remove the back-up plate. See figure 15.
5.
6
.
Hold
the
blade
retainer
on
the
impeller
assembly
with
an
adjustable
wrench
to
keep
the
blade
from
turning as shown in figure 15.
Remove the blade by removing the center bolt, lock
washer and flat washer.
NOTE
Use
caution
when
removing
the
blade
to
avoid
contacting
the
weld
bolts
protruding from the housing.
AC
WARNING
The
blade
is
reversible
and
can
be
assembled
to
the
crankshaft
with
either
side showing.
When
sharpening
the
blade,
follow
the
original
angle
of grind as a guide. It is extremely important that each
cutting
edge
receives
an
equal
amount
of
grinding
tp
prevent
an
unbalanced
blade.
An
unbalanced
blade
will
cause
excessive
vibration
whèn
rotating
at
high
speeds
and may cause damage to the unit.
The blade can be tested by balancing it on a round shaft
screwdriver
or
nail.
Remove
metal
from
the
heavy
side
until it balances evenly. See figure 16.
NOTE
When
reassembling,
make
certain
the
opening
on
the
back-up
plate
is
toward
the bottom of the unit. The back-up plate
may be reversed to provide a new cutting
edge.