MTD 642D Series User manual
•
ASSEMBLY
•
OPERATION
•
MAINTENANCE
•
5
and
8
H.P.
SHREDDERS
Model
Series
642D
thru
648D
(Model
648D
Shown)
IMPORTANT!
Record
the
exact
Model
No.
and
Serial
No.
which
appear
on
the
frame
of
your
unit
in
the
space
below.
You
must
have
these
numbers,
along
with
the
date
of
purchase,
in
order
to
receive
warranty
or
service.
Important:
Read
Safety
Rules
and
Instructions
Carefully
MEETS
ANSI
SAFETY
STANDARDS
MODEL
NO.
SERIAL
NO.
24ri-64rtD
Marie
~
WARNING:
This
unit
is
equipped
with
an
internal
combustion
engine
and
should
not
be
used
on
or
near
any
unimproved
forest-covered,
brush-covered
or
grass-covered
land
unless
the
engine's
exhaust
system
is
equipped
with
a
spark
arrester
meeting
applicable
local
or
state
laws
(if
any).
If
a
spark
arrester
is
used,
it
should
be
maintained
in
effective
working
order
by
the
operator.
In
the
State
of
California
the
above
is
required
by
law
(Section
4442
of
the
California
Public
Resources
Code).
Other
states
may
have
similar
laws.
Federal
laws
apply
on
federal
lands.
A
spark
arrester
for
the
muffler
is
available
through
your
nearest
engine
authorized
service
dealer
or
contact
the
service
department,
P.O.
Box
368022,
Cleveland,
Ohio
44136-9722.
FORM
NO.
770-8607L
IMPORTANT
A
THIS
SYMBOL
POINTS
OUT
IMPORTANT
SA
AL
SAFETY
AND/OR
PROPERTY
OF
YOUR
BEFORE
ATTEMPTING
TO
OPERATE
YOUR
RESULT
IN
PERSONAL
INJURY.
WHEN
YOU
SAFE
OPERATION
PRACTICES
■
ETY
INSTRUCTIONS
WHICH,
IF
NOT
FOLLOWED,
COULD
ENDANGER
THE
PERSON-
}ELF
AND
OTHERS.
READ
AND
FOLLOW
ALL
INSTRUCTIONS
IN
THIS
MANUAL
CHIPPER-SHREDDER.
FAILURE
TO
COMPLY
WITH
THESE
INSTRUCTIONS
MAY
SEE
THIS
SYMBOL:
^
HEED
ITS
WARNING.
A
DANGER
Your
chipper-shredder
w
as
built
to
be
operated
according
to
the
rules
for
safe
operation
in
this
manual.
As
with
any
type
of
power
equipment,
carelessness
or
error
on
the
part
of
the
operator
can
result
in
serious
injury.
This
chip
ler-shredder
is
capable
of
amputating
fingers
and
hands
and
throwing
objects.
Failure
to
observe
the
fol
owing
safety
instructions
could
result
in
serious
injury
or
death.
A
l
.
GENERAL
OPERATION
1.
R
ead
this
owner's
guide
carefully
in
its
entirety
befc
ing
to
assemble
this
machine.
Read,
understand,
ar
instructions
on
the
machine
and
in
the
manual(s)
be
tion.
Be
completely
familiar
with
the
controls
and
use
of
the
machine
before
operating
it.
Keep
this
i
safe
place
for
future
and
regular
reference
and
f<
replacement
parts.
2.
Y
our
chipper-shredder
is
a
powerful
tool,
not
a
Therefore,
exercise
extreme
caution
at
all
times.
Yc
been
designed
to
perform
two
jobs;
to
chip
and
sh
tion
found
in
a
normal
yard.
Do
not
use
it
for
any
pose.
3.
N
ever
allow
children
under
age
16
to
operate
the
uni
16
years
and
older
should
only
operate
the
unit
u
parental
supervision.
Only
responsible
individua
familiar
with
these
rules
of
safe
operation
should
be
use
your
unit.
4.
K
eep
the
area
of
operation
clear
of
all
persons,
[
small
children
and
pets.
Stop
the
engine
when
the;
vicinity
of
the
unit.
Keep
work
area
clean
and
clear
c
or
obstacles
which
could
cause
you
to
stumble
or
fa
5.
W
hen
feeding
material
into
this
equipment,
be
extre
ful
that
pieces
of
metal,
rocks,
bottles,
cans
or
otl
objects
are
not
included.
Personal
injury
or
dam
machine
could
result.
6.
A
lways
wear
safety
glasses
or
safety
goggles,
during
and
while
performing
an
adjustment
or
repair,
to
pi
from
foreign
objects
that
may
be
thrown
from
the
m;
7.
W
ear
sturdy,
rough-soled
work
shoes
and
close
fit
and
shirt.
Shirt
and
slacks
that
cover
the
arms
an
steel-toed
shoes
are
recommended.
Do
not
wear
l(
clothes
or
jewelry
and
secure
hair
so
it
is
abovf
length.
They
can
be
caught
in
moving
parts,
Neve
unit
in
bare
feet,
sandals
or
sneakers.
Wear
gloves'
ing
material
in
the
chipper
chute
or
shredder
hopper,
8.
N
ever
place
your
hands,
feet,
or
any
part
of
your
bo
shredder
hopper,
chipper
chute,
discharge
openin
any
moving
part
while
the
engine
is
running.
Keep
r
discharge
opening
at
all
times.
If
it
becomes
ne>
push
material
into
the
chipper
chute
or
shredder
ho|
small
diameter
stick,
NOT
YOUR
HANDS.
9.
I
f
it
is
necessary
for
any
reason
to
unclog
the
feet
discharge
openings
or
to
inspect
or
repair
any
f
machine
where
a
moving
part
can
come
in
contact
body
or
clothing,
stop
the
machine,
allow
it
to
cool,
i
the
spark
plug
wire
from
the
spark
plug
and
move
it
the
spark
plug
before
attempting
to
unclog,
inspect
o
10.
D
o
not
operate
unit
while
under
the
influence
of
drugs.
11.
T
he
machine
should
only
be
operated
on
a
level
surf;
operate
your
unit
on
a
slippery,
wet,
muddy
or
ic
Keep
your
work
area
clean
and
clear
of
branches
or
which
could
cause
you
to
stumble
and
fall.
Do
not
Maintaining
proper
footing
and
balance
is
essential
t
ing
accidents.
re
attempt-
d
follow
all
fore
opera¬
te
proper
ranual
in
a
r
ordering
plaything,
or
unit
has
ed
vegeta-
other
pur-
.
Children
ider
close
s
who
are
allowed
to
articulariy
are
in
the
f
branches
nely
care¬
er
foreign
rge
to
the
operation
otect
eyes
chine,
ing
slacks
I
legs
and
ose
fitting
shoulder
operate
a
/hen
feed-
ly
into
the
3
,
or
near
lear
of
the
essary
to
per,
use
a
ce.
Never
i
surface,
obstacles
iverreach.
)
prevent-
12.
Do
not
allow
an
accumulation
of
processed
material
to
build¬
up
in
the
discharge
area
as
this
will
prevent
proper
discharge
and
can
result
in
kick-back
from
the
chipper
chute.
13.
Keep
your
face
and
body
back
from
chipper
chute
to
avoid
accidental
bounce
back
of
any
material.
14.
Do
not
transport
machine
while
engine
is
running.
15.
If
the
cutting
mechanism
strikes
a
foreign
object
or
if
your
machine
should
start
making
an
unusual
noise
or
vibration,
immediately
stop
the
engine
and
allow
the
machine
to
come
to
a
complete
stop.
Disconnect
the
spark
plug
wire
and
move
it
away
from
the
spark
plug.
Take
the
following
steps.
•
Inspect
for
damage.
•
Repair
or
replace
any
damaged
parts.
•
Check
for
any
loose
parts
and
tighten
to
assure
continued
safe
operation.
16.
Never
attempt
to
attach
or
remove
catcher
bag
when
engine
is
running.
Shut
the
engine
off
and
wait
for
the
impeller
to
come
to
a
complete
stop.
The
impeller
continues
to
rotate
for
a
few
seconds
after
the
engine
is
shut
off.
Never
place
any
part
of
the
body
in
the
impeller
area
until
you
are
sure
the
impeller
has
stopped
rotating.
17.
Muffler
and
engine
become
hot
and
can
cause
a
burn,
Do
not
touch.
18.
Do
not
allow
leaves
or
other
debris
to
build-up
on
engine’s
muffler.
The
debris
could
ignite
and
cause
a
fire.
19.
Do
not
attempt
to
shred
or
chip
material
larger
than
specified
in
this
manual.
Personal
injury
or
damage
to
the
machine
could
result.
20.
Do
not
operate
engine
if
air
cleaner
or
cover
over
carburetor
air-intake
is
removed,
except
for
adjustment.
Removal
of
such
parts
could
create
a
fire
hazard.
21.
Only
use
accessories
approved
for
this
machine
by
the
manu¬
facturer.
Read,
understand,
and
follow
all
instructions
provid¬
ed
with
the
approved
accessory.
22.
If
situations
occur
which
are
not
covered
by
this
manual,
use
care
and
good
judgment.
Contact
your
dealer
for
assistance.
23.
Keep
discharge
chute
deflector,
chipper
chute
door,
and
all
other
guards
and
safety
devices
in
place
and
operating
proper¬
ly.
24.
Only
operate
unit
in
good
daylight.
Do
not
operate
unit
at
night
or
in
dark
areas
where
your
vision
may
be
impaired.
II.
CHILDREN
Tragic
accidents
can
occur
if
the
operator
is
not
alert
to
the
pres¬
ence
of
small
children.
Children
are
often
attracted
to
the
chipper-
shredder
and
the
chipping
and
shredding
activity.
Never
assume
that
children
will
remain
where
you
last
saw
them.
1.
Keep
children
out
of
the
work
area
and
under
the
watchful
eye
of
a
responsible
adult
other
than
the
operator.
2.
Be
alert
and
turn
the
unit
off
if
a
child
enters
the
area.
3.
Never
allow
children
under
the
age
of
16
to
operate
the
chip¬
per-shredder.
2
k
i
ll.
SERVICE
1.
U
se
extreme
care
in
handling
gasoline
and
other
fuels.
They
are
extremely
flammable
and
the
vapors
are
explosive,
a.
S
tore
fuel
and
oil
in
approved
containers,
away
from
heat
and
open
flame,
and
out
of
the
reach
of
children.
Check
and
add
fuel
before
starting
the
engine.
Never
remove
gas
cap
or
add
fuel
while
the
engine
is
running.
Allow
engine
to
cool
at
least
two
minutes
before
refueling,
b.
R
eplace
gasoline
cap
securely
and
wipe
off
any
spilled
gasoline
before
starting
the
engine
as
it
may
cause
a
fire
or
explosion.
c.
E
xtinguish
all
cigarettes,
cigars,
pipes
and
other
sources
of
ignition.
d.
N
ever
refuel
unit
indoors
because
flammable
vapors
will
accumulate
in
the
area.
e.
N
ever
store
the
machine
or
fuel
container
inside
where
there
is
an
open
flame
or
spark
such
as
a
gas
hot
water
heater,
space
heater,
clothes
dryer
or
furnace.
2.
N
ever
run
your
machine
in
an
enclosed
area
as
the
exhaust
from
the
engine
contains
carbon
monoxide,
which
is
an
odor¬
less,
tasteless
and
deadly
poisonous
gas.
3.
T
o
reduce
fire
hazard,
keep
engine
and
muffler
free
of
leaves,
grass,
and
other
debris
build-up.
Clean
up
fuel
and
oil
spillage.
Allow
unit
to
cool
at
least
5
minutes
before
storing.
4.
Before
cleaning,
repairing,
or
inspecting,
make
certain
the
impeller
and
all
moving
parts
have
stopped.
Disconnect
the
spark
plug
wire
and
keep
wire
away
from
spark
plug
to
prevent
accidental
starting.
Do
not
use
flammable
solutions
to
clean
air
filter.
5.
Check
the
blade
and
engine
mounting
screws
at
frequent
inter¬
vals
for
proper
tightness.
Also
visually
inspect
blades
for
wear
and/or
damage
(e.g.,
bent,
cracked).
Replace
with
blades
which
meet
original
equipment
specifications.
6.
Keep
all
nuts,
bolts,
and
screws
tight
to
be
sure
the
equipment
is
in
safe
working
condition.
7.
Never
tamper
with
safety
devices.
Check
their
proper
opera¬
tion
regularly.
8.
After
striking
a
foreign
object,
immediately
stop
the
engine,
disconnect
the
spark
plug
wire
from
the
spark
plug,
and
thor¬
oughly
inspect
the
unit
for
any
damage.
Repair
damage
before
starting
and
operating
unit.
9.
Do
not
alter
or
tamper
with
the
engine’s
governor
setting.
The
governor
controls
the
maximum
safe
operating
speed
of
the
engine.
Over-speeding
the
engine
is
dangerous
and
will
cause
damage
to
the
engine
and
to
other
moving
parts
of
the
machine.
OWNER’S
MANUAL
SAFETY
LABEL
A
WARNING
—
YOUR
RESPONSIBILITY
Restrict
the
use
of
this
power
machine
to
persons
who
read,
understand
and
follow
the
warnings
and
instructions
in
this
manual
and
on
the
machine.
3
ASSEMEiLY
INSTRUCTIONS
IMPORTANT:
This
unit
is
shipped
WITHOUT
GASOLINE
or
OIL.
After
assembly,
see
ssparate
engine
manual
for
proper
fuel
and
engine
oil
rec¬
ommendations.
NOTE:
To
determine
right
and
left
hand
sides
of
your
chipper-shredder,
stand
behind
and
face
the
hopper
(engine
is
at
the
front
of
the
unit).
Your
chipper-shredder
has
been
completely
assem¬
bled
at
the
factory,
except
for
the
chute
defle
:tor
and
the
catcher
bag.
A
pair
of
safety
glasses
<
re
also
included
in
the
carton.
FIGURE
1.
TO
REMOVE
CHIPPER-SHREDDER
FROM
CARTON
1.
Remove
staples,
break
glue
on
top
flaps,
or
cut
tape
at
carton
end
and
peel
along
top
flap
to
open
carton.
2.
Remove
loose
parts
if
included
with
unit
(i.e.,
owner’s
manual,
etc.).
3.
Cut
along
dotted
lines
and
lay
carton
down
flat.
4.
Remove
packing
material.
5.
Roll
or
slide
unit
out
of
carton.
Check
carton
thoroughly
for
loose
parts.
TOOLS
REQUIRED
FOR
ASSEMBLY
(2)
7/16"
or
Adjustable
Wrenches
HOW
TO
SET-UP
YOUR
CHIPPER-SHREDDER
A
WARNING:
Make
certain
the
spark
plug
wire
is
disconnected
and
moved
away
from
the
spark
plug
before
assembling
the
chipper-shredder.
ATTACHING
THE
CHUTE
DEFLECTOR
1.
Remove
the
hand
knobs
and
cupped
washers
from
each
side
of
the
discharge
opening
on
the
left
side
of
the
shredder.
2.
Remove
the
hex
lock
nut,
two
spacers
and
hex
bolt
from
inside
the
hinge
on
top
of
the
discharge
opening.
Do
not
remove
one
spacer
from
the
hex
bolt.
3.
Place
the
chute
deflector
in
position
on
the
dis¬
charge
opening.
Insert
bolt
through
hinge
on
chute
deflector
and
housing
(spacer
fits
inside
hinge).
4.
Place
second
spacer
over
the
hex
bolt,
inside
the
other
part
of
hinge.
Secure
with
hex
lock
nut.
Tighten
securely.
5.
Secure
both
sides
of
the
chute
deflector
to
the
housing
using
hand
knobs
and
cupped
washers
(cupped
side
of
washers
go
against
chute
deflec¬
tor).
ATTACHING
THE
CATCHER
BAG
Your
chipper-shredder
is
equipped
with
a
catcher
bag
to
catch
the
shredded
material.
To
attach
bag,
place
bag
opening
over
the
chute
deflector
so
it
completely
covers
chute
opening.
Depress
plunger
on
drawstring,
pull
on
drawstring
until
bag
is
tight
around
chute
opening.
Release
plunger
to
lock
it
into
position.
See
figure
2.
4
FIGURE
3.
ASSEMBLING
THE
OPTIONAL
HOSE
ATTACHMENT
(See
Figure
3)
1.
Place
handle
in
position
on
nozzle
tube.
Secure
front
of
handle
to
nozzle
with
hex
bolt
5/8“
long
and
hex
lock
nut.
Do
not
tighten
at
this
time.
2.
Place
flat
washer
on
hex
bolt
1-1/4"
long.
Place
saddle
washer
on
hex
bolt,
with
the
crowned
side
of
the
washer
against
the
head
of
the
hex
bolt.
3.
Place
the
hex
bolt
(with
washer
attached)
down
through
the
other
hole
in
the
handle
and
nozzle.
Secure
with
hex
lock
nut.
Tighten
both
hex
bolts
and
nuts
securely.
4.
Slide
one
hose
clamp
on
each
end
of
the
hose
(loosen
hose
clamps
if
necessary).
Slide
one
end
of
hose
over
the
round
opening
in
the
nozzle,
and
secure
with
hose
clamp.
Slide
other
end
of
hose
over
the
plug,
and
secure
with
hose
clamp.
Make
certain
both
hose
clamps
are
tightened
securely.
ATTACHING
AND
REMOVING
THE
OPTIONAL
HOSE
ATTACHMENT
A
WARNING:
Be
certain
to
stop
the
engine
and
disconnect
the
spark
plug
wire
from
the
spark
plug
before
attaching
or
remov¬
ing
the
vacuum
hose
from
the
vacuum.
To
Attach
the
Vacuum
Hose
to
the
Hopper:
Insert
the
plug
end
of
the
hose
into
the
hopper.
Slide
the
front
(curved)
portion
down
into
position
first,
then
push
down
on
the
rear
of
the
plug,
past
the
locking
tabs.
See
figure
4.
To
Remove
the
Vacuum
Hose
From
the
Hopper:
Standing
behind
the
hopper,
pivot
the
neck
of
the
plug
backwards
until
front
of
plug
releases
from
hopper.
Then
pull
the
rest
of
the
plug
out
of
the
hopper.
A
WARNING:
Keep
away
from
the
muffler
as
it
is
hot.
Do
not
allow
the
hose
to
con¬
tact
the
muffler.
Do
not
pull
on
the
hose
to
move
the
chip¬
per-shredder.
Unit
could
tip
over.
5
OPERATION
KNOW
YOUR
SHREDDER
READ
THIS
OWNER’S
MANUAL
AND
SAFETY
RULES
BEFORE
OPERATING
YOUR
SHREDDER.
Compare
the
illustrations
with
your
shredder
to
familia
ize
yourself
with
the
location
of
various
controls
and
adjustments.
Save
this
manual
for
future
reference.
FIGURE
5.—Model
648D
Shown
Model
648D
OPERATING
CONTROLS
(See
figure
5)
RELEASE
HANDLE
—Used
to
release
the
he
the
ground.
CHOKE
LEVER
(if
so
equipped)
—Used
to
ei
carburetor
when
starting
a
cold
engine.
PRIMER
(if
so
equipped)
—Pumps
additional
cylinder
for
use
when
starting
a
cold
engine.
STARTER
HANDLE
—Used
to
manually
start
THROTTLE
CONTROL—
Controls
engine
engine.
The
operation
of
any
shredder
can
result
eign
objects
being
thrown
into
the
eyes
can
result
in
severe
eye
d
■
Always
wear
safety
glasses
shields.
We
recommen<
vision
safety
mask
for
over
cles
or
standard
safety
glas
BEFORE
STARTING
1.
P
lace
the
shredder
on
a
firm,
level
surface
2.
A
ttach
spark
plug
wire
to
spark
plug.
3.
S
ervice
engine
with
gasoline
and
oil
as
in
in
the
separate
engine
manual
packed
w
shredder.
pper
when
lowering
to
irich
the
fuel
mixture
in
fuel
from
carburetor
to
he
engine,
speed
and
in
for-
which
image,
or
eye
I
wide
specta-
»es.
rtructed
th
your
stops
the
Choke
Throttle
Starter
Handle
4.
O
pen
fuel
shut-off
valve
(if
so
equipped).
NOTE:
Check
the
fuel
level
periodically
to
avoid
run¬
ning
out
of
gasoline
while
operating
the
chipper-
shredder.
If
the
unit
runs
out
of
gas
as
it
is
shredding
or
chipping,
it
may
be
necessary
to
unclog
the
unit
before
it
can
be
restarted.
Refer
to
“Removing
the
Flail
Screen”
on
pages
8
and
9.
TO
START
ENGINE
A
WARNING:
Be
sure
no
one
other
than
the
operator
is
standing
near
the
shredder
while
starting
or
operating.
6
1.
Place
the
throttle
control
lever
in
FAST
position.
See
figure
5.
2.
Engines
with
choke
lever:
Move
choke
lever
to
CHOKE
position
(a
warm
engine
may
not
require
choking).
Engines
with
primer:
Prime
engine
as
instructed
in
separate
engine
manual.
3.
Grasp
starter
handle
(see
figure
5)
and
pull
rope
out
slowly
until
engine
reaches
start
of
compres¬
sion
cycle
(rope
will
pull
slightly
harder
at
this
point).
Let
the
rope
rewind
slowly.
4.
Pull
rope
with
a
rapid,
continuous,
full
arm
stroke.
Keep
a
firm
grip
on
starter
handle.
Let
rope
rewind
slowly.
Do
not
let
starter
handle
snap
back
against
starter.
5.
Repeat
preceding
instructions
3
and
4
until
engine
fires.
When
engine
starts,
move
choke
lever
(if
so
equipped)
on
engine
halfway
between
CHOKE
and
RUN.
6.
Move
throttle
control
to
IDLE
position
for
a
few
minutes
warm-up.
Move
choke
lever
(if
so
equipped)
to
RUN
position
as
engine
warms
up.
NOTE:
In
order
to
idle
smoothly,
a
new
engine
may
require
3
to
5
minutes
running
above
slow
idle
speed.
Idle
speed
has
been
adjusted
to
be
correct
after
this
break-in
period.
TO
STOP
ENGINE
1.
Move
throttle
control
lever
to
STOP
position.
2.
Disconnect
spark
plug
wire
and
move
away
from
spark
plug
to
prevent
accidental
starting
while
equipment
is
unattended.
3.
Close
fuel
shut-off
valve
(if
so
equipped)
when
unit
is
not
in
use
to
prevent
fuel
leakage.
HOW
TO
USE
YOUR
SHREDDER
Do
not
attempt
to
shred
or
chip
any
material
other
than
vegetation
found
in
a
normal
yard
(i.e.,
branches,
leaves,
twigs,
etc.).
WARNING:
The
shredder
discharges
material
with
considerable
velocity.
Keep
away
from
the
area
around
the
chute
deflector.
Always
stop
the
engine
and
dis¬
connect
the
spark
plug
wire
when
remov¬
ing
or
attaching
the
bag,
when
changing
containers
or
when
removing
the
shred¬
ded
material,
wear
safety
glasses
and
gloves
whenever
using
your
shredder.
The
shredder
is
designed
for
three
different
methods
of
operation.
1.
Leaves
and
small
branches
up
to
1/2"
diameter
can
be
fed
into
the
hopper
when
it
is
in
the
raised
position.
See
figure
6.
If
it
becomes
necessary
to
push
material
into
the
shredder,
use
a
small
diameter
stick—-NOT
YOUR
HANDS.
The
stick
cannot
exceed
1/2"
in
diameter
so
it
will
be
ground
up
if
it
gets
into
the
impeller
assembly.
A
WARNING:
Do
not
put
material
larger
than
1/2"
in
diameter
into
the
hopper.
Material
up
to
a
maximum
of
3"
in
diameter
materi¬
al
may
be
fed
into
the
chipper
chute.
Do
not
attempt
to
shred
or
chip
any
material
larger
than
3“
in
diameter.
Personal
injury
or
damage
to
the
machine
could
result.
2.
Leaves
and
small
twigs
can
be
raked
into
the
shredder
when
the
hopper
assembly
is
lowered
to
the
ground.
See
figure
7.
To
lower
the
hopper
assembly
to
the
ground,
use
one
hand
to
grasp
the
top
of
the
hopper
assem¬
bly.
Push
down
on
the
release
handle,
and
pivot
the
hopper
assembly
to
the
right.
See
figure
8.
7
FIGURE
8.
3.
Bulky
material,
such
as
stalks
or
heavy
I
>ranches,
up
to
3"
in
diameter
should
be
fed
into
the
chipper
chute.
See
figure
9.
A
WARNING:
Make
certain
the
chipper
chute
door
is
closed
when
not
in
use.
IMPORTANT:
There
is
a
flail
screen
located
inside
the
housing
in
the
discharge
area.
If
the
flail
screen
becomes
clogged,
remove
and
clean
as
instructed
in
the
Maintenance
section
below.
For
best
performance,
it
is
important
to
keep
the
shredding
blade
and
the
chipper
blades
sharp.
Refer
to
Maintenance
section,
page
9.
If
the
composition
of
the
material
being
discharged
changes
(becomes
stringy,
etc.)
or
if
the
rate
at
which
the
material
is
dis¬
charged
slows
down
considerably,
it
is
likely
that
the
shredding
blade
and/or
chipper
blades
are
dull
and
need
to
be
sharpened
or
replaced.
IV
AINTENANCE
A
WARNING:
Always
stop
engine
and
dis¬
connect
spark
plug
wire
before
leaning,
lubricating
or
performing
any
impairs
or
maintenance.
LUBRICATION
Lubricate
the
pivot
points
on
the
release
hai
idle,
hop¬
per
assembly,
chute
deflector
and
chipper
c
lute
once
a
season
using
a
light
oil.
ENGINE
Refer
to
the
separate
engine
manual
fc
r
engine
maintenance
instructions.
Maintain
engine
oil
as
instructed
in
the
separate
engine
manual
packed
with
your
unit.
Read
md
follow
instructions
carefully.
Service
air
cleaner
every
25
hours
under
nc
rmal
con¬
ditions.
Clean
every
few
hours
under
extremely
dusty
conditions.
Poor
engine
performance
and
flooding
usually
indicates
that
the
air
cleaner
shou
d
be
ser¬
viced.
To
service
the
air
cleaner,
refer
to
th«
separate
engine
manual
packed
with
your
unit.
The
spark
plug
should
be
cleaned
and
the
gap
reset
once
a
season.
Spark
plug
replacement
is
recom¬
mended
at
the
start
of
each
season;
check
engine
manual
for
correct
plug
type
and
gap
specifications.
Clean
the
engine
regularly
with
a
cloth
or
brush.
Keep
the
cooling
system
(blower
housing
area)
clean
to
permit
proper
air
circulation
which
is
essential
to
engine
performance
and
life.
Be
certain
to
remove
all
dirt
and
combustible
debris
from
muffler
area.
CLEANING
The
shredder
may
be
cleaned
by
running
water
from
a
hose
through
the
hopper
assembly
and
chipper
chute
with
the
engine
running.
Allow
the
shredder
to
dry
thoroughly.
Wash
the
bag
periodically
with
water.
Allow
to
dry
thoroughly
in
the
shade.
Do
not
use
heat.
REMOVING
THE
FLAIL
SCREEN
If
the
discharge
area
becomes
clogged,
remove
the
flail
screen
and
clean
area
as
follows.
8
1.
Stop
the
engine,
make
certain
the
shredder
has
come
to
a
complete
stop
and
disconnect
spark
plug
wire
from
the
spark
plug
before
unclogging
the
chute.
2.
Loosen
the
two
hand
knobs
on
each
side
of
the
chute
deflector.
Lift
the
chute
deflector
up,
and
tie
it
out
of
the
way,
3.
Remove
two
hairpin
clips
from
the
clevis
pins
which
extend
through
the
housing.
Remove
the
clevis
pins.
Lift
the
flail
screen
from
inside
the
housing.
See
figure
10.
4.
Clean
the
screen
by
scraping
or
washing
with
water.
Reinstall
the
screen.
NOTE:
Be
certain
to
reassemble
the
flail
screen
with
the
curved
side
down
as
shown
in
figure
10.
Hand
Knobs
FIGURE
10.
SHARPENING
OR
REPLACING
CHIPPER
BLADES
1.
Disconnect
spark
plug
wire
and
move
it
away
from
spark
plug.
2.
Remove
the
flail
screen
as
instructed
in
previous
section.
3.
Remove
the
chipper
chute
by
removing
three
hex
nuts
and
washers.
A
1/2"
wrench
is
required.
See
figure
11.
NOTE:
When
reassembling,
the
cupped
washer
goes
on
the
bottom
of
the
chipper
chute
with
the
cupped
side
against
the
chute.
4.
Rotate
the
impeller
assembly
by
hand
until
you
locate
one
of
the
chipper
blades
in
the
chipper
chute
opening.
Remove
the
blade,
using
a
3/16"
alien
wrench
on
the
outside
of
the
blade
and
1/2"
wrench
on
the
impeller
assembly
(inside
the
housing).
See
figure
11.
5.
Remove
the
other
blade
in
the
same
manner.
FIGURE
11.
Replace
or
sharpen
blades.
If
sharpening,
make
cer¬
tain
to
remove
an
equal
amount
from
each
blade.
Reassemble
in
reverse
order.
Make
certain
blades
are
reassembled
with
the
sharp
edge
facing
the
direction
shown
in
figure
11
(sharp
edge
is
assembled
toward
the
slotted
opening
in
the
impeller
assembly).
SHARPENING
OR
REPLACING
SHREDDING
BLADE
The
shredding
blade
may
be
removed
for
sharpening
or
replacement
as
follows.
1.
Disconnect
spark
plug
wire
and
move
it
away
from
spark
plug.
2.
Lower
the
hopper
assembly.
Block
up
the
hopper.
See
figure
12.
3.
Remove
the
six
hex
lock
nuts
and
flat
washers
from
the
housing
weld
bolts
using
a
1/2"
wrench.
Remove
the
hopper
assembly.
4.
Remove
the
back-up
plate.
NOTE:
When
reassembling
the
back-up
plate,
make
certain
the
single
tab
is
at
the
top
of
the
back-up
plate,
and
the
two
tabs
are
at
the
bottom.
Also,
make
certain
the
tabs
go
toward
the
blade.
9
I
When
reassembling
the
blade,
tighten
to
between
550
and
650
inch
pounds,
or
lacking
torque
wrench,
tight¬
en
securely.
FLAILS
The
flails,
located
inside
the
housing,
may
be
reversed
when
they
become
dull.
It
is
suggested
that
this
procedure
be
performed
by
your
nearest
author¬
ized
dealer.
CARBURETOR
ADJUSTMENT
A
WARNING:
If
any
adjustments
are
made
to
the
engine
while
the
engine
is
running
(e.g.
carburetor),
keep
clear
of
all
moving
parts.
Be
careful
of
heated
surfaces
and
muffler.
FIGURE
12.
5.
Loosen
the
two
hand
knobs
and
cuppec
washers
which
secure
the
chute
deflector,
and
raise
the
chute
deflector.
6.
Insert
a
1/2"
or
3/4"
diameter
pipe
throuc
h
the
flail
screen
into
the
impeller
assembly
to
ke<
;p
it
from
turning,
or
remove
the
flail
screen,
ant
insert
a
piece
of
wood
(2
x
4)
into
the
chute
oper
ing.
7.
Remove
the
two
outside
screws
on
the
blade,
using
a
3/16"
alien
wrench
and
a
1/2"
wr
3nch.
8.
Remove
the
blade
by
removing
the
ce
nter
bolt,
lock
washer
and
flat
washer.
NOTE:
Use
caution
when
removing
the
blad
3
to
avoid
contacting
the
weld
bolts
on
the
housing.
When
sharpening
the
blade,
follow
the
origi
lal
angle
of
grind
as
a
guide.
It
is
extremely
important
that
each
cutting
edge
receives
an
equal
amount
of
g
rinding
to
prevent
an
unbalanced
blade.
An
unbalant
ed
blade
will
cause
excessive
vibration
when
rotating
at
high
speeds
and
may
cause
damage
to
the
unit.
The
blade
can
be
tested
for
balance
by
b£
lancing
it
on
a
round
shaft
screwdriver
or
nail.
Remove
metal
from
the
heavy
side
until
it
is
balanced
ev
3nly.
See
figure
13.
Minor
carburetor
adjustment
may
be
required
to
com¬
pensate
for
differences
in
fuel,
temperature,
altitude
or
load.
NOTE:
A
dirty
air
cleaner
will
cause
engine
to
run
rough.
Be
certain
air
cleaner
is
clean
and
attached
to
the
carburetor
before
adjusting
carburetor.
Do
not
make
unnecessary
adjustments.
Factory
set¬
tings
are
satisfactory
for
most
applications
and
condi¬
tions.
If
adjustment
is
needed,
refer
to
the
separate
engine
manual
packed
with
your
shredder.
OFF-SEASON
STORAGE
The
following
steps
should
be
taken
to
prepare
your
shredder
for
storage.
1.
Clean
and
lubricate
the
shredder
thoroughly.
2.
Refer
to
engine
manual
for
correct
engine
storage
instructions.
3.
If
storing
in
an
unventilated
or
metal
storage
shed,
coat
metal
parts
with
a
light
oil
or
silicone
to
prevent
rust.
4.
Store
in
a
dry,
clean
area.
Do
not
store
next
to
corrosive
materials,
such
as
fertilizer.
10
OPTIONAL
EQUIPMENT
A
vacuum
hose
kit
(model
290-002-000)
and
a
tow
hitch
kit
(model
290-003-000)
are
available
as
option¬
al
equipment.
TROUBLE
SHOOTING
PROBLEM
POSSIBLE
CAUSE(S)
CORRECTIVE
ACTION
Engine
fails
to
start
1
.
Spark
plug
wire
disconnected.
2.
Fuel
tank
empty,
or
stale
fuel.
3.
Fuel
shut-off
valve
closed
(if
so
equipped).
4.
Faulty
spark
plug.
1
.
Connect
wire
to
spark
plug.
2.
Fill
tank
with
clean,
fresh
fuel.
3.
Open
fuel
shut-off
valve.
4.
Clean,
adjust
gap
or
replace.
Loss
of
power;
operation
erratic
1
.
Spark
plug
wire
loose.
2.
Unit
running
on
CHOKE.
3.
Blocked
fuel
line
or
stale
fuel.
4.
Water
or
dirt
in
fuel
system.
5.
Carburetor
out
of
adjustment.
6.
Dirty
air
cleaner.
1
.
Connect
and
tighten
spark
plug
wire.
2.
Move
choke
lever
to
OFF
position.
3.
Clean
fuel
line;
fill
tank
with
clean
fresh
gasoline.
4.
Disconnect
fuel
line
at
carburetor
to
drain
fuel
tank.
Refill
with
fresh
fuel.
5.
Adjust
carburetor.t
6.
Service
air
cleaner,
f
Engine
overheats
1
.
Carburetor
not
adjusted
properly.
2.
Engine
oil
level
low.
1.
Adjust
carburetor.f
2.
Fill
crankcase
with
proper
oil.
Too
much
vibration
Loose
parts
or
damaged
impeller.
Stop
engine
immediately
and
disconnect
spark
plug
wire.
Tighten
ail
bolts
and
nuts.
Make
all
necessary
repairs.
If
vibration
continues,
have
unit
serviced
by
an
authorized
service
dealer.
Unit
does
not
discharge
1
.
Discharge
chute
clogged.
2.
Foreign
object
lodged
in
impeller.
1.
Stop
engine
immediately
and
disconnect
spark
plug
wire.
Clean
flail
screen
and
inside
of
housing,
See
Maintenance
section
of
this
manual.
2.
Stop
engine
immediately
and
disconnect
spark
plug
wire.
Remove
lodged
object.
Rate
of
discharge
slows
considerably
or
composition
of
discharged
material
changes
Shredding
blade
and/or
chipper
blades
dull.
Sharpen
or
replace
shredding
and
chipper
blades.
TRefer
to
the
engine
manual
packed
with
your
unit.
NOTE:
For
repairs
beyond
the
minor
adjustments
listed
above,
please
contact
your
nearest
authorized
service
dealer.
11
I
Model
No.
641
D
645D
643D
642D
Spark
Plug
J17LM
J19LM
N4C
J8C
Air
Filter
Element
332i
18
491588
36634
30727
Air
Pre-Cleaner
35311
491435
36046
35974
Engine
Oil
(SAE
30)
737-0
208
(26
oz.
i
eq'd.)
737-0208
(21
oz.
req’d.)
737-0208
(21
oz.
req’d.)
737-0208
(21
oz.
req’d.)
Chipper
Blade
(Standard)
781-0190
781-0490
781-0490
781-0490
Chipper
Blade
(Tooled
Steel)
742-0
544
742-0544
742-0544
742-0544
Shredding
Blade
742-0
571
742-0571
742-0571
742-0571
Bag
764-0-
99A
764-0199A
764-0199A
764-0199A
Safety
Glasses
723-0100
723-0400
723-0400
723-0400
Vacuum
Hose
Kit
(Optional)
290-1
02
290-002
290-002
290-002
Tow
Hitch
Kit
(Optional)
290-t
03
290-003
290-003
290-003
The
only
way
tc
ensure
the
performance
of
your
product
is
to
use
original
equipment
parts
and
accessories,
which
are
designed
and
engineered
to
exacting
specifics
tions.
When
you
substitute,
you
take
a
chance
on
qual
ty,
reliability,
safety
and
performance.
Use
original
equipment
parts—See
your
local
service
dealer.
For
Re
olacement
Parts,
Contact:
SERVICE
DEPARTMENT
•
P.O.
BOX
368022
•
CLEVELAND,
OHIO
44136-9722
"i
This manual suits for next models
1
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