McCulloch MAC 291, MAC 2816, EAGER BEAVER 28, EAGER BEAVER 282 User Manual
//1MtrEULLOtrH,
t-
OPERATION
MAINTENANCE
SAFETY
Your new string trimmer is a complex tool.
For
your
own
safety,
please
read this
manual before attempting to operate
your
new unit.
Failure to follow instructions can
result in serious
personal
injury. Spend
a
few moments
to familiarize
vourself
with
tew moments
to lamrlranze
yoursell
wrtn
your
trimmer before each
use.
USER
MANUAL
MAC@ 291
6
EAGER BEAVER@ 28,282
GAs
STB'ruG
TRIMMERS
PN
98587-04
O U.S.A. . McCulloch Corooration.
1993 Printed in U.S.A
Dear
Customer,
Thank
you
for
purchasing
a
McCullo-ch
product'
With
proper
operation
and
mainienance
it will
provide
you
with
years of
service,
ln
order
to
make
the
best
use
of
your investment'
be
CenfAtru
to
familiarize
yourself
with
the
contents
of
the
ENTIRE
User
Manual
before
attempting
to
operate
and
maintain
Your
unit.
Be
sure
to
carefully
follow
the
step-by-step
illustrations
in
this
manual
to start,
operate
and
maintain
your new
product.
ln the
manual
there
will
be
the
following
call-outs:
NOTE'
WARNING /
CAUTION
and
WARRANTY'
A
NOTE:
is
used
to
convey
additional
information'
to
highlight
a
particular
explanation,
or
expand
a step
description.
GENERALINFORMATION.
.
. .
.
3
1-..|
....
Introduction
1-2.
. ..
AboutYourManual
1-3....
AboutYourUnit
1-4.
...
AssemblY
Requirements
1-5.
...
Specifications
GENERALIDENTIFICATION.
...4
2-1
. .
..
General
ldentification
2-2.
. ..
Sd{etY
Features
SAFEWPRECAUTIONS.
.
..
..
5
3-1....
WhatToDo
3-2.
.
..
What
NOT
To
Do
ASSEMBLYINSTRUCTIONS
...7
4-1
. .
..
Handle
AssemblY
4-2.
.
..
SparkArrester
Installation
4-3.
.
. .
DebrisShield
Installation
FUELANDLUBRICATION
. ..
..8
5-1....
Fuel
5-2.
.
..
Mixing
Fuel
5-3.
...
FuelMixingTable
5-4.
.
..
Use
Of Blended
Fuels
OPERATINGINSTRUCTIONS
...9
6-1.
.. .
StartingACold
Engine
6-2.
.
..
To
StoP
The
Engine
6-3.
..
. WarmEngine
Start
A
WARNING
"..
CAUTION
ii"n1iti""
a
procedure
which,
if
not
undertaken
or
if
improperly
done,
can
result
in
serious
personal
iniury
or
damage
to
the
unit
and/or
both'
rn"
@
(wARRANW
sYMBoL)
serves
notice
that
unless
instructions
or
procedures
are
followed'
any
J.t"gt
l"rted
will
voidthe
warranty
and
repairs
will
be
at
owner's
expense'
Service
other
than
user
maintenance
should
be
o"rtormeO
bv
a
McCulloch
Authorized
Service
Center'
b.t"g"
or
conditions
which
render
this
product
inop"iiuru
caused
by
improper
maintenance
practices
will
void
the
manufacturer's
warranty'
McCulloch
CorPoratlon
Product
Servlce
DePartme
nt
TRIMMING
INSTRUCTIONS
.
11
7-1.
. .
.
Additional
Safety
Precautions
7-2.
. .
. Stringhead
Line
Release
7-3.
. .
.
Trimming
Procedures
MAINTENANCE
INSTRUCTIONS
13
8-1.
..
.
Preventive
Maintenance
8-2.
. .
. RePlacingCutterLine
8-3.
. .
.
Removing/
Replacing
Stringhead
8-4.
...AirFilter
8-5.
.
..
FuelCaP/Fuel
Filter
8-6.
. .
.
CarburetorAdiustment
8-7....SParkPlug
8-8.
. .
.
SParkArresterScreen
8-9.
.
. .
Debris
Shield
Knife
Sharpening
8-10.
..
StoringAUnlt
8-11.
. .
Removing
A
Unit
From
Storage
ACCESSORIES
&
LUBRICANTS
.
.'''''
18
TROUBLESHOOTINGTHESTRINGHEAD
. .
19
TROUBLESHOOTINGTHE
ENGINE
. .
.
. . 20
1-1. INTRODUCTION
1.3.
ABOUT YOUR UNIT
Your
McCulloch
String
Trimmer
is a light,
portable,
hand-held
unit,
powered
by
a 2-cycle
engine, that
runs
cool and
quiet.
Your
unit features
a recoil
starter for
fast, consistent
starts and a precision
diaphragm
carburetor for
smooth
operation.
A
spark
arrester
screen
that meets
all
U.S. Forest
Service
Regulations
is
furnished
in
the user kit.
For
additional
information governing
use and
replacement
of
spark
arrester
screens
for
your
unit, see
Safety
Precautions
and Accessories
and
Replacement
Parts
in
this
manual.
1-2.
ABOUTYOUR
MANUAL
McCulloch
units are designed
to meet all
of
your
lawn
and
garden
trimming
needs. When
equipped with
a
debris shield
and stringhead,
your
unit can trim
unsightly
weeds
and tall
grass
in those hard
to reach areas
-
along
fences, walls, foundations
and around
trees.
1.4. ASSEMBLY
REQUIREMENTS
Your unit
will require assembly
of some
components
which
were
packed
separately
for shipping.
Please
follow
the
directions beginning
in Section
4-1,
Assembly
Instructions.
NEVER operate
your
unit
without a
properly
installed
debris shield.
Your
User
Manual
is both
a reference
and a service
handbook
that
provides
you
with
safety
precautions,
easy-to-follow
assembly,
fuel,
starting,
operating,
trimming
and
maintenance
instructions.
1.5. SPECIFICATIONS
Engine
Type
Air-cooled
,2-Cycle,
Chrome
Cylinder
Displacement
29
cc
DryWeight...
9.9tbs.
Fuef
Capacity
24 oz.
Drive
Shaft
Length
44"
Handle
Delta
Cutting
Line
O.O8O
or 0.095"
Cutting
Swath
15u
Stringhead
. . .
Duat Line
Semi-Automatic
Feed
Carburetor
.
primer/Diaphragm
Type
lgnition
Electronic
Spark
Plug
.
Champion
DJ8J or
Equivatent
Drive
Direct
2.1. GENERAL
IDENTTFICATION
1.
STRINGHEAD
2.
CUTTER
LINE
3. DEBRIS
SHIELD
4.
DRIVE
SHAFT
ASSEMBLY
5.
HANDLE
6.
THRoTTLETRIGGER
7. IGNITIoN
oN/oFF
SWIToH
8.
cHoKE
LEVER
9. FAN
HoustNG
1
0. FUEL
TANK
11
, AIR FILTER
coVER
12,
STARTER
HANDLE
13.
MUFFLER
sHtELD
14.
DRtvE
sHAFT RETAINtNG
scREw
15.
SPARKARRESTER
SCREEN*
16.
PRIMER
BULB
17.
cRrP
\o
WARNING
CAUTION
Blades
CANNOT
be
used on
these
models.
"Supplied
in User
Kit
2-2.
SAFEW
FEATURES
Numbers preceding
the descriptions
correspond
with numbers
above to help
you
locate the safety feature.
3
DEBRIS
SHIELD
must
be
installed
to
prevent
de-
ffi|rort
spaytng
up
into
the operator
and
prevent
the string
from
extending
longer
than
necessary.
13
uurrlen
Sgtrlo
hetps
prevent
hands,
body
and/or
combustible
materials
from
making
contact
with
a hot
muffler.
15 Spnnx nnReSfER
SCneEru retains
carbon and
other flammable
particles
over 0.023 inches
in size
from exhaust
flow.
NOTE: Compliance with
local, state and federal
laws
and/or
regulations
governing
the use of a spark arrester
screen is
the user's responsibility.
See Safety
Precautions
(Section
3) and Maintenance Instructions
(Section
8) for additional information.
The
serial
number
of
your
unit
is located
on
the
engine.
For handy
reference
purposes,
you
may
want
to record
the
serial
number
along
with
the
model
number.
You
may also
want
to etch
your
own marking.
MODEL NUMBER
SERIAL
NUMBER
PERSONAL
ETCHING:
3-1. WHAT
TO DO
READ
YOUR
USEB
MANUALAND
ALL
SUP-
PLEMENTS
(tF
ANY
ENCLOSED)
THOR_
OUGHLY
BEFORE
OPERATING
YOIJR
UNIT.
1.
WEAR
CLOSE
FITTING,
TOUGH
WORK
CLOTHING
that will
provide
protection,
such
as long
slacks
or trou_
sers,
safety
work
shoes,
heavy
duty
work
gloves,
a
safety
face
shield,
goggles
or safety
glasses
for
eye
protection
and
a
good
grade
of ear
plugs
or
other
sound
barriers
br hearing protection.
2.
REFUEL
lN
A SAFE
PLACE,
Open
fuet
cap
slowty
to
retease
any
pressure
which
may
have
formed
in fuel
tank.
To
prevent
a fire
hazard,
move
at least
10
Jeet
(3
meters)
lrom
fueling
area
before
starting.
3.
lF
FUEL
HAS
SPTLLED
ON
UNIT,
be sure
engine
has
been
dried
completely
before
starting
it.
4,
COMPLY
WITH
ALL
FIRE
PREVENTION
REGULATIONS.
We recommend
you
keep a
shoveland
fire
extinguisher
close
by
whenever
using
your
unrt
in
areas
where
dry
grass,
leaves
or
other
flammable
mate_
rials
are
present,
To
operate a gasoline-powered
prod-
uct
on
U.S.
National
Forest
Lands
or forest,
brush
or
grass-covered
lands
in
many
U.S.
states
-
including
California,
Maine,
New
Hampshire,
Oregon,
Washington
-
you
must
have
an
approved
spark
arrester
screen
properly
installed
and
maintained
on
the
engine
muffler.
The
spark
arrester
screen
must
remove
and
retain
carb_
on and
other
flammable
particles
over
0.023
inches
in
size
from
engine
exhaust
flow.
NOTE:
COMPLIANCE
WITH
ALL
LocAL,
STATE,
oR
FEDERAL
LAWS
IN THE
UNITED
STATES
IS THE
USER'S
BESPONSIBILITY.
Your
unit
comes
with
a sparK
arresrer
screen
furnishe?
in
the
user kit.
Replacement
sparK
arrester
screen
kits
are
available
at
your
nearest
McCulloch
Authorized
Service
Center
listed
under
.SAWS,
in
vour
Telephone
Directory
Yellow
pages.
lf
you
have
any
questions
concerning
spark
arrester
screens
or their
use,
wrrte
to:
McCulloch
Corporation,
product
Service
Depanment,
P.O.
Box
1 1990,
Tucson,
Arizona
85734.
Or,
vou
can
call our
toll-free
number,
USA: 1-800-423-6302.
Arizona
residents
call
1-800-221
-6507.
NOTES:
8.
9.
5. TURN
UNIT OFF
before setting
it down.
6.
ALWAYS
HOLD UNIT FIRMLY
WITH
BOTH HANDS.
the thumb and
f ngers encircling
the handles.
7. KEEPALLSCREWS
AND
FASTENERSTTGHT.
Never
operate your
equipment
when it
is improperly
adjusted
or not completely
and
securely
assembled.
KEEP HANDLES
DRY, clean
and free
of
fuel mixture.
KEEP STRINGHEAD
AS
CLOSE
TO GROUND
AS
PRACTICAL.
Avoid hitting
smail
objects
with
stringhead.
When
cutting
on a slope,
stand
below
stringhead.
NEVER
cut
or trim
on a hill
or slope,
etc.. if
there is
the slightest
chance
of slipping,
sliding
or
losing
firm footing.
10. CHECK
AREA
YOU
WILL BE
TRIMMING
FOR
DEBRIS
that
may
be struck
or thrown
during
operation.
Clear
area
before
operating
equipment.
11.
KEEP ALL
PARTS
OF YOUR
BODY
AND
CLOTHING
AWAY
FROM
STRINGHEAD
when
starting
or running
engine.
Before
starting
engine,
make
sure
stringhead
will
not come
in contact
with
any
obstacle.
12.
STOP
ENGINE before
examining
cutting
line.
13.
STORE
EOUIPMENT
AWAY
FROM
POSSIBLE
IGNITION
SOURCES,
such
as
gas-powered
water
heat-
ers,
clothes
dryers,
or oil-fired
furnaces,
portable
heat-
ers,
etc.
14. ALWAYS
KEEP
the
debris
shield,
stringhead,
ano
en-
gine
free of
debris
build-up.
15. TURN
IGNITION
SWITCH
TO
OFF
and remove
soarx
plug
boot
from
spark
plug
to
avord
any chance
of acci-
dental
starting
before
replacing
stringhead
or line.
16.
OPERATIONOFEOUTPMENT
should
atwavs
oe
re-
stricted
to
mature
and
properly
instructed
indviduals.
3
SAFETY PRECAUTIONS
3
3.2.
WHAT
NOT TO DO
WARNING
DO NOT
OPERATETHIS EOUIPMENT
with other
peo-
ple
or animals in
the imrnediate vicinity.
ALLOW a safe
distance
of at least 30 feet
(10
meters)
between operator
and other
people
or animals.
EDGINCJSCALPING
lS NOT RECOMMENDED
w h e n
other
people
or
animals are within 100 feet.
OO NOT SWEEP
WITH UNIT. Sweeping refers
to tilting
head
attachment
to sweep away debris from
sidewalks,
driveways,
etc.
tlfh
oo NoT usE ANy
orHER FUEL than
that rec-
\llommended in
your
nnnual.
Always follow instruc-
tions
in the Fuel
and Lubrication section
of this manual.
Never
use
gasoline
unless it is
properly
mixed with
2-cycle engine lubricant.
Permanent
damage to
engine
will result, voiding
manufacturer's
warranty.
5. DO NOT
OPERATE
EQUIPMENT wearing
loose
scarves, shorts,
dangling
jewelry,
key chains,
etc., or
while
barefoot.
OO NOT SMOKE
while refueling
or operating
equip-
ment.
DO
NOT START
EOUIPMENT WHEREYOU
FUEL IT,
Move
at least
10 feet
(3
meters)
from fueling
areas
before
starting.
DO NOT
OPERATE
UNIT WITHOUT A
MUFFLER
and
properly
installed muffler
shield.
OONOTTOUCH
or let
your
hands or
body come in
contact with
a hot mlffler
or spark
plug
wire.
10.
11.
1.
DO
NOT ALLOW DIRT.
FUEL OR DEBRIS to build uo
on engrne.
DO
NOT OPERATE UNIT
lN AWK\TVARO POS|IIONS,
otf balance, outstretched
arms, or one-handed. Always
use two hands
when
operating unit
with thumbs and
fingers encircling the
handles.
DO
NOT USE STEEL LINE OR PLASTIC-COATED
STEEL
LINE. The use of steel
line
or
plastic-coated
steel
line is
extremely
dangerous. Your stringhead is
designed
to
be
used with .080 or .095" diameter nylon
line.
DO NOT RAISE STRINGHEAD
above knee level while
unit is operating.
lnjury to operator could result.
DO NOT USE
ANY TYPE BLADE OR SAW CHAIN
CUTTER
HEAD unless soecified or included.
DO NOT
USE UNIT FOR ANY PURPOSES OTHER
than trimming
or mowing weeds or
grass.
DO NOTOPERATEUNIT
FOR PROLONGED PERIOOS,
Rest
periodically.
DO NOT
OPERATE UNIT WHILE UNDER THE
INFLUENCE OF ALCOHOL
OR
DRUGS.
DO NOT OPERATE UN]T UNLESS DEBRIS SHIELD
AND/OR GUARD IS INSTALLED AND IN GOOO
CONDITION.
1fhoo
Nor ADD, REMovE oR ALTER ANY
\l/coupoNENTs
oFTHts
pRooUCT.
Doing so
could cause
personal
injury and/or damage the
unit
void ing the rnanufacturer's warranty.
12.
2.
3.
4.
13.
14.
15.
16.
17.
18.
19.
6.
7.
L
9.
CAUTION
Extremely long
hair may be
drawn into the engine by the cooling
fan.
Ensure long
hair is
protected
and kept clear of the cooling
fan intake
area.
4.1. HANDLE
ASSEMBLY
NOTE:
The
Delta handle
is attached
to the shaft
but has
been turned
under
for ease
of
packing.
Figure
z1-1A
1 .
Loosen adjustment
knob
and rotate
handle
to top
of
shaft.
(Figure
4-1A)
2. Retighten
adjustment
knob
securely.
4.2.
SPARK
ARRESTER
INSTALLATION
NOTE:
Spark
Arrester
is required
when
using your
trimmeron
U.S. National
Forest
Lands. Checkvourlocal
state
requirements.
1 .
Place
your
unit on
a work bench
or level
surface
with
the muffler
facing you
as shown
in Figure
4-2A.
2.
Access
to the
screen
area can
be made
through
the
opening
on
the back
of
the muffler
shield.
lt is
not
necessafo
to
remove
the
muffler
shield to
install
the
screen.
REMOVE
SCREW
Figure
4'2A
3.
Using
a screwdriver,
remove
the
screen
cover
taining
screw.
(Figure
4-2A)
INSTALL
IN ORDER
SHOWN
>
:-@SCREEN
\K-
\
-COVER
\
Figure
rl-2B
-
scREw
4. Install
the spark arrester
screen,
the screen
cover
and scure in
place
with the retaining
screw.
(Figure
4-28)
NOTE:
A dirty spark
arrester screen
can dramatically
reduce
performance.
4.3. DEBRIS
SHIELD
INSTALLATION
WARNING
The debris
shield must
be installed
to
properly
dispense
cutter
line and
protect
operator.
@ ""Qg
Figure
zL3A
Figure
4-38
6-112"
To
8-112'
Figure
4-3C
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