T1503-93110(912)
OWNER/OPERATOR MANUAL
LONG REACH TRIMMER
LRTZ2500
WARNING
WARNING
The engine exhaust from this product
contains chemicals known to the State
of California to cause cancer, birth
defects or other reproductive harm.
Before using our trimmers, please
read this manual carefully to
understand the proper use of your
unit.
APPLICABLE SERIAL NUMBERS :
DRIVE UNIT 000000 and up
CUTTING UNIT 000000 and up
ENGINE UNIT 000479 and up
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SAFETY FIRST
Instructions contained in warnings within this
manual marked with a
symbol concern
critical points which must be taken into
consideration to prevent possible serious
bodily injury, and for this reason you are
requested to read all such instructions
carefully and follow them without fail.
■ WARNINGS IN THE MANUAL
WARNING
This mark indicates instructions which must be
followed in order to prevent accidents which could
lead to serious bodily injury or death.
IMPORTANT
This mark indicates instructions which must be
followed, or it leads to mechanical failure,
breakdown, or damage.
NOTE
This mark indicates hints or directions useful in the
use of the product.
CONTENTS
1. Parts location …………………………………4
2. Specifications …………………………………4
3. Warning labels on the machine ……………5
4. Symbols on the machine ……………………5
5. For safe operation ……………………………6
6. Set up…………………………………………12
7. Fuel……………………………………………14
8. Operation ……………………………………16
9. Maintenance …………………………………19
10. Storage ………………………………………23
11. Troubleshooting guide………………………24
12. Parts list ………………………………………25
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1. Parts location
1. Loop handle
9. Gear case
2. Shoulder strap hanger
3. Ignition switch
4. Throttle cable
5. Throttle lever
6. Throttle set button
7. Drive shaft housing
8. Blade
10. Spark arrester
11. Starter knob
12. Fuel tank
13. Primer pump
14. Choke lever
15. Air cleaner cover
2. Specifications
■ LRTZ2500
Overall size(LxWxH)························································ 90.1(2300)x9.8(250)x12.2(310) in(mm)
Dry weight w/o acc. ···························································································· 13.4 (6.1) lbs(kg)
Engine
Type ········································································· Air-cooled 2-stroke gasoline
Model ··························································································· Zenoah GZ25N
3
Displacement ··········································································· 1.6cu-in (25.4cm )
-1
Max. output······················································· 1.2Hp (0.9kW)at 7500/min (rpm)
-1
Idle speed ·············································································3000±200/min (rpm)
Fuel ··········································································· Mixture(Gasoline 50 : Oil 1)
Carburetor······································································· Walbro Diaphragm type
Spark plug ························································································NGK CMR7A
Fuel tank capacity·······························································································22.0 fl.oz (0.65 )
Transmission··········································································· Centrifugal clutch, Rigid driveshaft
Reduction ratio ························································································································· 4.0
Durability period················································································································· 300 hrs
Cutting head Type···········································································Reciprocating Double blade
Tooth·········································································································28 teeth
Pitch···················································································································30
Effective cut width ··························································································16 in
Angle adjust range··················90°(±45° from cutting head position aligned shaft)
Standard Accessories
Shoulder Strap ······························································································ 1 pc.
Goggle··········································································································· 1 pc.
Tool Kit·········································································································· 1 pc.
Blade Cover ·································································································· 1 pc.
Specifications are subject to change without notice.
4
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3. Warning labels on the machine
(1) Read owner's manual before operating this machine.
(2) Wear head, eye and ear protection.
(3) Handling this machine improperly could result in accidents causing serious injury or
death. Read this manual carefully and practice using the trimmer until you are fully
acquainted with all operations and have learned to use it correctly.
(4) Keep all children, bystanders and helpers 15 meters away from the brushcutter
(5) Keep hands away from cutting blades
IMPORTANT
If warning label peel off or become soiled and impossible to read, you should contact the dealer
from which you purchased the product to order new labels and affix them in the required
location(s).
WARNING
Never modify your trimmer.
We won't warrant the machine, if you use the remodeled trimmer or you don't observe the
proper usage written in the manual.
4. Symbols on the machine
For safe operation and maintenance, symbols are
carved in relief on the machine. According to these
indications, please be careful not to take a mistake.
(a) The port to refuel the "MIX GASOLINE"
Position: FUEL TANK CAP
(b) The direction to close the choke
Position: AIR CLEANER COVER
(c) The direction to open the choke
Position: AIR CLEANER COVER
5
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5. For safe operation
1. Read this manual carefully until you
completely understand and follow all safety
and operating instructions.
2. Keep this manual handy so that you may refer
to it later whenever any questions arise. Also
note, if you have any questions which cannot
be answered herein, contact the dealer from
whom you purchased the product.
3. Always be sure to include this manual when
selling, lending, or otherwise transferring the
ownership of this product.
4. Never allow children or anyone unable to fully
understand the directions given in the manual
to use the machine.
■ WORKING CONDITION
1. When using the product, you should wear proper
clothing and protective equipment.
(1) Helmet
(2) Ear protectors
(3) Protection goggles or face protector
(4) Thick work gloves
(5) Non-slip-sole work boots
2. And you should carry with you.
(1) Attached tools and files
(2) Properly reserved fuel
(3) Spare blade
(4) Things to notify your working area (rope,
warning signs)
(5) Whistle (for collaboration or emergency)
(6) Hatchet or saw (for removal of obstacles)
3. Do not wear loose clothing, jewelry, short
trousers, sandals, or go barefoot. Do not wear
anything which might be caught by a moving
part of the unit. Secure hair so it is above
shoulder length.
■ WORKING CIRCUMSTANCE
1. Never start the engine inside a closed room or
building. Exhaust gases contain dangerous
carbon monoxide.
2. Never use the product,
a. when the ground is slippery or when you can’t
maintain a steady posture.
6
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5. For safe operation
b. At night, at times of heavy fog, or at any other
times when your field of vision might be
limited and it would be difficult to gain a clear
view of the working area.
c. During rain storms, during lightning storms, at
times of strong or gale-force winds, or at any
other times when weather conditions might
make it unsafe to use the product.
■ WORKING PLAN
1. You should never use the product when under
the influence of alcohol, when suffering from
exhaustion or lack of sleep, when suffering from
drowsiness as a result of having taken cold
medicine or at any other time when a possibility
exists that your judgment might be impaired or
that you might not be able to operate the product
properly and in a safe manner.
2. When planning your work schedule, allow plenty
of time to rest. Limit the amount of time over
which the product is to be used continuously to
somewhere around 30~40 minutes per session,
and take 10~20 minutes of rest between work
sessions. Also try to keep the total amount of
work performed in a single day under 2 hours or
less.
WARNING
1. If you don’t observe the working time, or
working manner (See ■USING THE
PRODUCT), Repetitive Stress Injury(RSI)
could occur.
If you feel discomfort, redness and swelling
of your fingers or any other part of your
body, see a doctor before getting worse.
2. To avoid noise complaints, in general,
operate product between 8a.m. and 5p.m. on
weekdays and 9a.m. to 5p.m. weekends.
NOTE
Check and follow the local regulations as to sound
level and hours of operations for the product.
7
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5. For safe operation
■ BEFORE STARTING THE ENGINE
1. The area within a perimeter of 50 feet (15m) of
the person using the product should be
considered a hazardous area into which no one
should enter. If necessary yellow warning rope,
warning signs should be placed around the
perimeter of the area. When work is to be
performed simultaneously by two or more
persons, care should also be taken to constantly
look around or otherwise check for the presence
and locations of other people working so as to
maintain a distance between each person
sufficient to ensure safety.
2. Check the condition of working area to avoid any
accident by hitting hidden obstacles such as
stumps, stones, cans, or broken grass.
IMPORTANT
Remove any obstacle before beginning work.
3. Inspect the entire unit for loose fasteners and
fuel leakage. Make sure that the cutting
attachment is properly installed and securely
fastened.
4. Always use the shoulder strap. Adjust the strap
for comfort before starting the engine. The strap
should be adjusted to fit your body according as
your working posture.
■ STARTING THE ENGINE
1. Keep bystanders and animals at least 50feet
(15m) away from the operating point. If you are
approached, immediately stop the engine.
2. The product is equipped with a centrifugal clutch
mechanism, so the cutting attachment begins to
rotate as soon as the engine is started by putting
the throttle into the start position. When starting
the engine, place the product onto the ground in
a flat clear area and hold it firmly in place so as
to ensure that neither the cutting part nor the
throttle come into contact with any obstacle
when the engine starts.
8
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5. For safe operation
WARNING
Never place the throttle into the high speed
position when starting the engine.
3. After starting the engine, check to make sure
that the cutting attachment stops rotating when
the throttle is moved fully back to its original
position. If it continues to rotate even after the
throttle has been moved fully back, turn off the
engine and take the unit to your authorized Red
Max servicing dealer for repair.
■ USING THE PRODUCT
IMPORTANT
Cut only materials recommended by the
manufacturer. And use only for tasks explained
in the manual.
1. Grip the handles firmly with both hands using
your whole hand. Place your feet slightly apart
(slightly further apart than the width of your
shoulders) so that your weight is distributed
evenly across both legs, and always be sure to
maintain a steady, even posture while working.
2. Keep cutting attachment below waist level.
3. Maintain the speed of the engine at the level
required to perform cutting work, and never raise
the speed of the engine above the level
necessary.
4. If the unit start to shake or vibrate, turn off the
engine and check the whole unit. Do not use it
until the trouble has been properly corrected.
5. Keep all parts of your body away from rotating
cutting attachment and hot surfaces.
6. Never touch the muffler, spark plug, or other
metallic parts of the engine while the engine is in
operation or immediately after shutting down the
engine. Doing so could result in serious burns or
electrical shock.
9
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5. For safe operation
• IF SOMEONE COMES
1. Guard against hazardous situations at all times.
Warn adults to keep pets and children away
from the area. Be careful if you are approached.
Injury may result from flying debris.
2. If someone calls out or otherwise interrupts you
while working, always be sure to turn off the
engine before turning around.
■ MAINTENANCE
1. In order to maintain your product in proper
working order, perform the maintenance and
checking operations described in the manual at
regular intervals.
2. Always be sure to turn off the engine before
performing any maintenance or checking
procedures.
WARNING
The metallic parts reach high temperatures
immediately after stopping the engine.
3. When replacing any part, or when replacing the
oil or any lubricant, always be sure to use only
RedMax products or products which have
been certified by RedMax for use with the
RedMax product.
4. In the event that any part must be replaced or
any maintenance or repair work not described in
this manual must be performed, please contact a
representative from the store nearest RedMax
authorized servicing dealer for assistance.
5. Do not use any accessory or attachment other
than those bearing the RedMax mark and
recommended for the unit.
6. Under no circumstances should you ever take
apart the product or alter it in any way. Doing so
might result in the product becoming damaged
during operation or the product becoming unable
to operate properly.
10
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5. For safe operation
■ HANDLING FUEL
1. The engine of the RedMax product is designed
to run on a mixed fuel which contains highly
flammable gasoline. Never store cans of fuel or
refill the tank of the unit in any place where there
is a boiler, stove, wood fire, electrical sparks,
welding sparks, or any other source of heat or
fire which might ignite the fuel.
2. Never smoke while operating the unit or refilling
its fuel tank.
3. When refilling the tank, always turn off the
engine and allow it to cool down. Take a careful
look around to make sure that there are no
sparks or open flames anywhere nearby before
refueling.
4. Wipe spilled fuel completely using a dry rag if
any fuel spillage occurs during refueling.
5. After refueling, screw the fuel cap back tightly
onto the fuel tank and then carry the unit to a
spot 10 feet or more away from where it was
refueled before turning on the engine.
■ TRANSPORTATION
1. When hand-carrying the product, cover over the
cutting part, lift up the product and carry it paying
attention to the blade.
2. Never transport the product over rough roads
over long distances by vehicle without removing
all fuel from the fuel tank. If doing so, fuel might
leak from the tank during transport.
11
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6. Set up
■ MOUNTING ENGINE (SE1)
SE1
1. Push the driveshaft housing toward the clutch
housing and rotate it by hand to check that the
driveshaft is engaged with the gears.
2. Insert the driveshaft housing into the clutch
housing until it bottoms, and align the positioning
holes on the clutch housing and the shaft tube
and install the screw. When difficult to engage,
twist the engine slightly.
3. Fasten the clamp securely with two screws.
SE2
IMPORTANT
Tighten the screws gradually by turns.
■ CONNECTING THROTTLE WIRE
1. Remove the air cleaner cover.
2. Connect the end of the throttle wire to the joint
on the top of the carburetor. (SE2)
■ CONNECTING SWITCH WIRES
• Connect the switch wires between the engine
and the main unit. Pair the wires of the same
color.
SE3
■ INSTALLING HANDLE
• Mount the handle to the shaft tube and clamp it
at a location that is comfortable to you. (SE3)
(1)
(1) About 19 inches (48cm)
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6. Set up
■
ATTACHING THE TRIMMING MECHANISM (SE4)
1. Remove the cap on the end of the main pipe.
2. Remove the screw screwed into the end of the
trimming mechanism.
3. Insert the end of the trimming mechanism into
the main pipe.
SE4
4. Line up the hole on the end of the trimming
mechanism into which the screw is to be
inserted with the hole on the main pipe, and
screw the screw firmly in.
5. Using a 10-mm wrench, screw in the hexagonal
bolt provided to fix the trimming mechanism into
place.
(1) Main pipe
(2) Trimming mechanism
(3) Screw hole
(4) Screw
(5) Fastening bolt
■ BALANCE UNIT
1. Put on strap and attach unit to strap.
2. Depending on the working posture, slide clamp
up or down until unit balances and the strap fits
your body.
13
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7. Fuel
WARNING
• Gasoline is very flammable. Avoid smoking
or bringing any flame or sparks near fuel.
Make sure to stop the engine and allow it
cool before refueling the unit. Select outdoor
bare ground for fueling and move at least
3m(10ft) away from the fueling point before
starting the engine.
• The RedMax engines are lubricated by oil
specially formulated for air-cooled 2-cycle
gasoline engine use. If RedMax oil is not
available, use an anti-oxidant added quality oil
expressly labeled for air-cooled 2-cycle engine
use. (JASO FC GRADE OIL or ISO EGC
GRADE)
RECOMMENDED MIXING RATIO
GASOLINE 50:OIL 1
50:1 MIXING CHART
GASOLINE gal.
1
2
3
4
5
• Exhaust emission are controlled by the
fundamental engine parameters and
components(eq., carburation, ignition timing
and port timing) without addition of any
major hardware or the introduction of an
inert material during combustion.
2-CYCLE OIL fl.oz 2.6 5.2 7.8 10.4 13
GASOLINE liter
1
2
3
4
5
2-CYCLE OIL ml 20
40
60
80 100
• These engines are certified to operate on
unleaded gasoline.
• Make sure to use gasoline with a minimum
octane number of 90 ROZ(USA/Canada : pump
octane min.87)
• Unleaded gasoline is recommended to reduce
the contamination of the air for the sake of your
health and the environment.
• Poor quality gasolines or oils may damage
sealing rings, fuel lines or fuel tank of the
engine.
■ HOW TO MIX FUEL
1. Measure out the quantities of gasoline and oil to
be mixed.
2. Put some of the gasoline into a clean, approved
fuel container.
3. Pour in all of the oil and agitate well.
4. Pour in the rest of gasoline and agitate again for
at least one minute.
5. Put a clear indication on the outside of the
14
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7. Fuel
container to avoid mixing up with gasoline or
other containers.
6. Indicate the contents on outside of container for
easy identification.
■ FUELING THE UNIT
1. Untwist and remove the fuel cap. Rest the cap
on a dustless place.
2. Put fuel into the fuel tank to 80% of the full
capacity.
3. Fasten the fuel cap securely and wipe up any
fuel spillage around the unit.
WARNING
1. Select bare ground for fueling.
2. Move at least 10 feet (3 meters) away from the
fueling point before starting the engine.
3. Stop the engine before refueling the unit.
FOR YOUR ENGINE LIFE, AVOID;
1. FUEL WITH NO OIL(RAW GASOLINE) – It will
cause severe damage to the internal engine
parts very quickly.
2. GASOHOL – It can cause deterioration of rubber
and/or plastic parts and disruption of engine
lubrication.
3. OIL FOR 4-CYCLE ENGINE USE or WATER
COOLED 2-CYCLE ENGINE USE – It can
cause spark plug fouling, exhaust port blocking,
or piston ring sticking.
4. Mixed fuels which have been left unused for
a period of one month or more may clog the
carburetor and result in the engine failing to
operate properly.
15
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8. Operation
■ STARTING ENGINE
OP1
WARNING
The cutting head will start rotating upon the
engine starts.
1. Rest the unit on a flat, firm place. Keep the
cutting head off the ground and clear of
surrounding objects as it will start rotating upon
starting of the engine.
OP2
(1)
2. Push the primer pump several times until
overflown fuel flows out in the clear tube. (OP1)
3. Move the choke lever to the closed position.
(OP2)
4. Set the ignition switch to the “start” position.
While pulling the throttle lever, push the set
button, and release the throttle, then the throttle
lever is in to the “start” position. (OP3)
5. While holding the unit firmly, pull out the starter
rope quickly until engine fires. (OP4)
(2)
(3)
OP3
(5)
(1) choke lever (2) close (3) open
(4) ignition switch (5) start (6) stop
(7) throttle set button
(6)
(4)
IMPORTANT
(7)
• Avoid pulling the rope to its end or returning it by
releasing the knob. Such actions can cause
starter failures.
OP4
6. Move the choke lever downward to open the
choke. And restart engine. (OP2)
7. Allow the engine to warm up for a several
minutes before starting operation.
NOTE
1. When restarting the engine immediately after
stopping it, leave the choke open.
2. Overchoking can make the engine hard to start
due to excess fuel. When the engine failed to
start after several attempts, open the choke and
repeat pulling the rope, or remove the spark plug
and dry it.
16
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8. Operation
■ STOPPING ENGINE (OP3)
1. Release the throttle lever and run the engine for
a half minute.
2. Shift the ignition switch to the STOP position.
IMPORTANT
• Except for an emergency, avoid stopping the
engine while pulling the throttle lever.
■ ADJUSTING THROTTLE CABLE
• The normal play is 1 or 2mm when measured at
the carburetor side end. Readjust with the cable
adjuster as required. (OP5)
OP5
(1) cable adjuster
.04 in
(1)
(1~2mm)
■ ADJUSTING IDLING SPEED (OP6)
1. When the engine tends stop frequently at idling
mode, turn the adjusting screw clockwise.
2. When the cutting head keeps rotating after
releasing the trigger, turn the adjusting screw
counter-clockwise.
OP6
(1) idle adjusting screw
NOTE
• Warm up the engine before adjusting the idling
speed.
(1)
WARNING
This product is equipped with extremely sharp
blades, and when used improperly these blades
can be extremely dangerous, and improper
handling can cause accidents which may in
turn lead to serious injury or death. For this
reason, you should always be careful to follow
the following instructions when using your
trimmer.
• Never hold the trimmer in a way in which the
blades are pointed towards someone else.
• Never allow the blades to come into proximity
with your body while the engine of the trimmer
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8. Operation
is in operation.
• Always be sure to turn off the engine before
changing the angle of the blades, removing
branches which have become stuck in the
blades, or at any other time when coming into
close proximity with the blades.
• Always wear work gloves made of leather or
some other sturdy material when using the
trimmer.
• Always place the blade cover provided with
the trimmer over the blades when not in use.
• Falling branches may fall onto the face or
into the eyes, resulting in injuries,
scratches, and cuts, and for this reason
you should always be sure to wear a
helmet and face protector when using your
trimmer.
IMPORTANT
The thickness of branches which may be cut
using this trimmer is limited to up to
approximately 3/16" (5mm). Never try to cut
branches thicker than this, as doing so may
result in damage to the trimmer.
■ ADJUSTING THE ANGLE OF THE CUTTING
BLADES (OP7)
1. Stop the engine.
OP7
2. Turn the bolt located on the top of the trimming
mechanism counter-clockwise to loosen it.
3. Adjust the angle of the blades to the desired
angle, and then fix the bolt firmly back into place.
(1) Clamp lever
(2) Trimming mechanism
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9. Maintenance
■ MAINTENANCE CHART
every every every
25 50 100
system/compornent
procedure
before hours hours hours note
use after after after
fuel leaks, fuel spillage
wipe out
✔
fuel tank, air filter, fuel filter
inspect/clean
see ■ADJUSTING
IDLING SPEED (p.17)
clean and readjust
plug gap
✔
✔
✔
✔
replace, if necessary
replace carburetor
if necessary
GAP: .025in(0.6~0.7mm)
replace, if necessary
idle adjusting screw
spark plug
✔
✔
✔
cylinder fins, intake air cooling vent clean
muffler, spark arrester, cylinder exhaust port clean
throttle lever, ignition switch
check operation
replace if
something's wrong
grease
✔
✔
cutting parts
gear case
screws/nuts/bolts
tighten/replace
✔
✔
not adjusting screws
■ BLADES (MA1)
• When refilling the tank or resting, it is often a
good idea to use the time to oil the cutting
blades.
• If a gap exists between the upper and lower
blades, follow the procedure below to adjust
them so that they fit more closely together.
1. Loosen lock nut (A) as shown in the diagram.
2. Tighten screw (B) fully, and then turn one-third
to one-half of a rotation backward.
MA1
3. While holding onto the screw to keep it in
position, tighten the lock nut.
4. Check to make sure that the flat washer (C) is
loose enough so that it may be turned by
pressing on it with a finger.
(1) Upper blade
(2) Lower blade
NOTE
Screwing in the screw too tightly may make it
impossible for the blades to move. Conversely, not
screwing in the screw tightly enough may make the
blades of the trimmer feel dull and cause leaves
and branches to become caught in the blades of
the trimmer.
19
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9. Maintenance
QUICK TIP
If the blades become so worn down that it is no
longer possible to eliminate the gap between them,
you should contact the authorized RedMax
servicing dealer from which you purchased your
RedMax® trimmer to have the blades resharpened
or replaced.
■ GEAR CASE
The reduction gears are lubricated by
multipurpose, lithium-based grease in the
gearcase.
MA2
Supply new grease every 25 hours of use or more
often depending on the job condition.
When adding lubricant, use a grease gun to insert
lubricant into the three grease nipples located on
the gear case. (MA2)
(1) Grease fitting
WARNING
• Make sure that the engine has stopped and is
cool before performing any service to the
machine. Contact with moving cutting head
or hot muffler may result in a personal injury.
MA3
■ AIR FILTER
• The air filter, if clogged, will reduce the engine
performance. Check and clean the filter element
in warm, soapy water as required. Dry
completely before installing. If the element is
broken or shrunk, replace with a new one. (MA3)
(1)
(1) air filter
MA4
■ FUEL FILTER
• When the engine runs short of fuel supply, check
the fuel cap and the fuel filter for blockage.
(MA4)
(1)
(1) fuel filter
20
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9. Maintenance
■ SPARK PLUG
• Starting failure and mis-firing are often caused
by a fouled spark plug. Clean the spark plug and
check that the plug gap is in the correct range.
For a replacement plug, use the correct type
specified by RedMax. (MA5)
MA5
• REPLACEMENT PLUG IS A NGK CMR7A.
IMPORTANT
.025 in
0.655mm
• Note that using any spark plug other than those
designated may result in the engine failing to
operate properly or in the engine becoming
overheated and damaged.
• To install the spark plug, first turn the plug until it
is finger tight, then tighten it a quarter turn more
with a socket wrench.
TIGHTENING TORQUE: 87~104 in-lbs
(9.8~11.8 N.m.)
■ MUFFLER
WARNING
• Inspect periodically, the muffler for loose
fasteners, any damage or corrosion. If any sign
of exhaust leakage is found, stop using the
machine and have it repaired immediately.
• Note that failing to do so may result in the
engine catching on fire.
■ SPARK ARRESTER
• The muffler is equipped with a spark arrester to
prevent red hot carbon from flying out of the
exhaust outlet. Periodically inspect and clean as
necessary with a wire brush. In the State of
California it is required by law (Section 4442 of
the California Public Resources Code) to equip a
spark arrester when a gas powered tool is used
in any forest covered, brush covered, or grass
covered unimproved land. (MA6)
MA6
(1)
(1) spark arrester
21
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9. Maintenance
■ INTAKE AIR COOLING VENT
WARNING
• Never touch the cylinder, muffler, or spark
plugs with your bare hands immediately after
stopping the engine. The engine can
become very hot when in operation, and
doing so could result in severe burns.
• When checking the machine to make sure
that it is okay before using it, check the area
around the muffler and remove any wood
chips or leaves which have attached
themselves to the trimmer. Failing to do so
could cause the muffler to become
overheated, and that this in turn could cause
the engine to catch on fire. Always make
sure that the muffler is clean and free of
wood chips, leaves, and other waste before
use.
• Check the intake air cooling vent and the area
around the cylinder cooling fins after every 25
hours of use for blockage, and remove any
waste which has attached itself to the trimmer.
Note that it is necessary to remove the engine
cover shown in (MA10) in order to be able to
view the upper part of the cylinder.
IMPORTANT
MA7
• If waste gets stuck and causes blockage around
the intake air cooling vent or between the
cylinder fins, it may cause the engine to
overheat, and that in turn may cause mechanical
failure on the part of the trimmer. (MA7)
(1) cylinder
(1)
(2) intake air cooling vent (back)
(2)
■ PROCEDURES TO BE PERFORMED AFTER
EVERY 100 HOURS OF USE
1. Remove the muffler, insert a screwdriver into the
vent, and wipe away any carbon buildup. Wipe
away any carbon buildup on the muffler exhaust
vent and cylinder exhaust port at the same time.
(MA8)
MA8
2. Tighten all screws, bolts, and fittings.
3. Check to see if any oil or grease has worked its
way in between the clutch lining and drum, and if
it has wipe it away using oil-free, lead-free
gasoline.
22
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10. Storage
• Aged fuel is one of major causes of engine
starting failure. Before storing the unit, empty the
fuel tank and run the engine until it uses all the
fuel left in the fuel line and the carburetor. Store
the unit indoor taking necessary measures for
rust prevention.
23
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11. Troubleshooting guide
Case 1. Starting failure
CHECK
PROBABLE CAUSES
ACTION
drain it and with correct fuel
clean
fuel tank
fuel filter
➞
➞
incorrect fuel
➞
➞
➞
➞
➞
➞
fuel filter is clogged
carburetor adjustment screw ➞ out of normal range
adjust to normal range
clean/dry
sparking (no spark)
➞
➞
➞
spark plug is fouled/wet
plug gap is incorrect
disconnected
correct (GAP: 0.6~0.7mm)
retighten
spark plug
Case 2. Engine starts but does not keep running/Hard re-starting.
CHECK
PROBABLE CAUSES
➞ incorrect fuel or staled fuel
➞ out of normal range
ACTION
drain it and with correct fuel
adjust to normal range
wipe away
fuel tank
➞
➞
➞
➞
➞
carburetor adjustment screw
muffler,cylinder (exhaust port) ➞ carbon is built-up
air cleaner
➞ clogged with dust
wash
cylinder fin, fan cover
➞ clogged with dust
clean
When your unit seems to need further service, please consult with our RedMax service shop in your area.
24
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12. Parts list
LONG REACH TRIMMER
LRTZ2500
NOTE :
1. Use KOMATSU ZENOAH genuine parts as specified in the parts list for repair and/or
replacement.
2. KOMATSU ZENOAH does not warrant the machines, which have been damaged by the
use of any parts other than those specified by the company.
3. When placing parts orders for repair and/or replacement, check if the model name and the
serial number are applicable to those specified in the parts list, then use parts number
described in the parts list.
4. The contents described in the parts list may change due to improvement.
5. The parts for the machine shall be supplied seven (7) years after the machine is
discontinued. [It is possible that some specific parts may be subject to change of their
delivery term and list price within the limit of ten (7) years after the machine is
discontinued. It is also possible that some parts may be available even after the limit of
seven (7) years.]
APPLICABLE SERIAL NUMBERS :
Dec.1999
DRIVE UNIT 000000 and up
CUTTING UNIT 000000 and up
ENGINE UNIT 000479 and up
25
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12. Parts list
Fig.1 DRIVE UNIT LRTZ2500 (S/N 000000 and up)
Fig.2 CUTTING UNIT LRTZ2500 (S/N 000000 and up)
26
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Fig.1 DRIVE UNIT LRTZ2500 (S/N 000000 and up)
Key#
Description
Part Number
Q'ty Key#
Description
Part Number
Q'ty
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
PIPE-COMP
SHAFT
GRIP
LEVER-COMP
• LEVER
• CORD(A)
• CORD(B)
TUBE
CABLE-COMP
HANGER-ASS’Y
• HANGER-COMP
• • HANGER
• • CLAMP
• • SLEEVE
• SCREW
T3002-12100
3520-12212
3577-32141
T3002-12200
6110-14410
T3002-12220
T3002-12230
T3002-12240
T3002-83110
6420-17300
6420-17400
9366-17110
9366-17120
6420-17410
0263-90525
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
16
17
18
19
20
21
22
23
24
25
26
27
28
29
NAME-PLATE
CAUTION-PLATE
HANDLE-ASS’Y
• HANDLE
• CLAMP
• SCREW
STRAP-ASS’Y
TOOL-SET
• DRIVER
T3053-12510
6425-12552
6420-14100
6420-14311
6420-14320
0263-90535
T3002-17200
T3002-91000
1030-91340
T3002-91310
09007-00425
3540-91120
3540-91110
T3002-91190
1
1
1
1
1
4
1
1
1
1
1
1
1
1
• SOCKET
• WRENCH
• SPANNER
• BAR
GOGGLE
Fig.2 CUTTING UNIT LRTZ2500 (S/N 000000 and up)
Key#
Description
Part Number
Q'ty Key#
Description
Part Number
Q'ty
1
2
3
4
5
6
7
8
9
LEVER, clamp
WASHER M6
WASHER 6x16x2.0
ANGLE ADJUSTER
BOLT M6x12
CASING A SET
• CASING A
• PLATE
GREESE FITTING
LABEL
SCREW M4x8
COVER
SNAP RING
BEBEL GEAR
SNAP RING
BEARING
CRANK SHAFT
SNAP RING
BLADE
BEARING 608Z
COVER
BOLT M4x10
FELT
SCREW
WASHER
SCREW L17
SCREW M5x20
GUIDE PLATE
PLATE
NUT M5
NUT M6
WASHER 6x15x2.0
BEARING 608 2RS
6598-13110
0290-20615
6598-13130
6782-13140
0225-10612
6782-13200
–––––––––
6782-13220
3199-13350
6782-13250
0263-10408
6598-13320
6598-13330
6782-13340
04065-02612
06004-06000
6782-13370
04064-02815
6782-13411
6782-13430
6782-13440
6782-13450
6782-13460
3884-11750
3880-11780
6598-13510
6598-13530
6782-13540
6782-13550
6782-14470
3880-11790
6782-13650
6598-13430
1
1
1
1
2
1
1
1
3
1
2
1
1
1
1
1
1
1
2
1
1
4
1
1
4
3
2
1
1
2
4
1
1
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
SNAP RING
SHAFT KIT
• • SHAFT
• • GEAR(B)
• • GEAR(C)
• • BOSS
• • SPRING
• • PLATE
• • WASHER
• • WASHER
• NUT M6
04065-02212
T4008-06010
–––––––––
–––––––––
T4008-13630
–––––––––
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
2
1
1
T4008-13650
T4008-13660
T4008-13670
T4008-13680
0280-10605
0290-20615
6598-13620
04065-02612
06004-06000
6782-13710
6598-13130
0225-10612
6782-13720
01252-30510
3350-21320
6782-13810
6598-13820
6782-13830
04065-02212
6782-13850
6598-13330
6598-13860
6598-13870
0263-10408
6782-13910
6367-13990
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
• WASHER
O-RING P41
SNAP RING
BEARING
CASING B
WASHER 6x16x2.0
BOLT M6x12
WASHER 5x10x1.0
BOLT M5x10
BOLT M5x30
JOINT
GEAR SHAFT B
BEARING 6900RS
SNAP RING
BEVEL GEAR
SNAP RING
PACKING
COVER
SCREW M4x8
BLADE COVER
SPACER
27
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12. Parts list
Fig.3 ENGINE UNIT LRTZ2500 (S/N 000479 and up)
28
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Fig.3 ENGINE UNIT LRTZ2500 (S/N 000479 and up)
Key#
Description
CYLINDER
GASKET, base
BOLT
Part Number
Q'ty Key#
Description
Part Number
Q'ty
1
2
3
4810-12111
4810-12210
1850-12130
4810-13161
4810-13120
4810-13130
00263-90520
4810-16100
4810-16110
4810-16120
4810-16130
4810-16170
4810-16150
4810-16200
4810-16210
4810-16120
4810-16130
4810-16170
4810-16160
4810-16140
4810-16180
4810-21100
2629-21130
4810-21140
06030-06001
4810-21210
1850-21220
04065-02812
01252-30530
4810-22110
00263-90510
4810-41110
5910-41210
1600-41310
1260-41320
1140-41330
1101-41340
4810-42000
1650-43230
1000-43240
5501-71110
4810-71200
4810-71220
2616-71320
1260-71261
4500-72150
4810-81001
4810-06030
4810-81450
–––––––––
–––––––––
–––––––––
–––––––––
–––––––––
–––––––––
4810-06020
–––––––––
–––––––––
–––––––––
–––––––––
4810-81130
1850-81490
1850-81520
1751-81510
4810-81250
1751-81240
1751-81130
1881-81140
–––––––––
1752-81110
5500-81120
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
6
1
3
1
2
1
1
1
3
1
1
1
2
1
2
1
2
1
1
1
1
1
1
1
2
2
1
1
1
–
–
–
–
–
–
1
–
–
–
–
1
1
1
1
1
1
1
1
–
2
1
72
73
74
• NUT, adjuster
• SCREW, adjuster
• SCREW
1751-81180
1918-81170
1850-81530
5500-81160
00263-90560
4810-15100
4810-15111
4810-15140
01252-30550
4810-15410
4810-31000
4810-31100
4810-31110
4810-31120
04065-02812
06004-06001
04064-01210
6470-31211
6470-31221
6470-31230
01252-30530
01252-30514
5500-85510
00263-90520
4810-32111
4810-12310
00263-90510
1140-51111
1600-51223
1140-51250
1140-51230
1970-51241
4810-72110
1900-72120
4810-71240
4810-71250
2850-71320
4810-73110
4810-72120
4810-75100
4500-75120
4500-75150
1850-75130
4500-75180
4500-75190
4810-75160
3330-75421
4810-75170
4500-75210
5500-85510
4810-82100
4810-82130
5500-82140
2630-33610
4810-82170
4810-82180
4810-82200
5500-82221
4810-87000
4500-85200
4500-85300
4500-85220
4810-85300
5500-85400
1260-85460
5500-85510
–––––––––
4810-31131
4810-31911
00263-90525
1950-86120
1
1
4
1
2
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
2
1
1
4
1
1
2
2
1
2
2
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
3
–
1
1
2
1
4
5
6
7
8
9
INSULATOR
GASKET, insulator
GASKET, carburetor
SCREW
REEDVALVE (S)-A
• VALVECASE (S)
• REEDVALVE
• STOPPER
• SCREW
PIRE AIR (S)
REEDVALVE (F)-A
• VALVECASE (F)
• REEDVALVE
• STOPPER
• SCREW
PIPE AIR (F)
GASKET, valve
SCREW
CRANKCASE-C
• PIN
GASKET
BEARING
SEAL
SEAL
SNAP RING
BOLT
GUARD
SCREW
PISTON
RING
PIN
RING
BEARING
WASHER
CRANKSHAFT-O
NUT
KEY
ROTOR
COIL-A
• CORD
• CAP
SPACER
BOLT
CARBURETOR ASS'Y
• REBUILD KIT
• • BODY ASS'Y
• • • SCREEN
• • • VALVE
• • • SPRING
• • • SCREW
• • • PIN
• • • LEVER
• • GASKET KIT
• • • DIAPHRAGM
• • • GASKET, diaphragm
• • • DIAPHRAGM, pump
• • • GASKET, pump
• • • RING
• BODY, purge
• COVER, pump
• PUMP, priming
• JET
• O-RING
• RING
• SWIVEL
• VALVE ASS'Y
• SCREW
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
• WASHER
SCREW
MUFFLER ASS’Y
• MUFFLER
• ARRESTER
BOLT
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
GASKET
COVER-A
• COVER-C
• • COVER, fan
• • DRUM
• • SNAPRING
• • BEARING
• • SNAP RING
• BRACKET (A)
• BRACKET (B)
• CUSHION
• BOLT
• BOLT
SCREW
SCREW
COVER, engine
PLATE
SCREW
SHOE
SPRING
SCREW
WASHER
WASHER
CAP
SPRING
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
CORD
CORD, carth
TUBE
PLUG
GROMMET
RECOIL ASS'Y
• REEL
• SCREW
• SPRING, spiral
• COLLAF
• ARM
• ROPE
• KNOB
• PLATE, stopper
PULLEY
SCREW
BODY ASS'Y
• PLATE, choke
• LEVER, choke
• SCREW
ELEMENT
SCREEN
COVER ASS'Y
• KNOB
TANK ASS'Y
• CAP ASS'Y
• • HOLDER-A
• • PACKING
• PIPE COMP.
• FLTER ASS'Y
• CLIP
SCREW
LABEL, recoil
LABEL, cover
GUARD
SCREW
CLIP
• BRACKET
29
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CALIFORNIA EMISSION CONTROL WARRANTY STATEMENT
YOUR WARRANTY RIGHTS AND OBLIGATIONS
The California Air Resources Board and KOMATSU ZENOAH are pleased to explain the
emission control system warranty on your 1995 and later small off-road engine. In California,
new small off-road engines must be designed, built and equipped to meet the state’s stringent
anti-smog standards. KOMATSU ZENOAH must warrant the emission control system on your
small off-road engine for the periods of time listed below provided there has been no abuse,
neglect or improper maintenance of your small off-road engine.
Your emission control system may include parts such as the carburetor and the ignition system.
Where a warrantable condition exists, KOMATSU ZENOAH will repair your small off-road engine
at no cost to you including diagnosis, parts and labor.
Manufacturer’s warranty coverage:
The 1995 and later small off-road engines are warranted for two years. If any emission-
related part on your engine is defective, the part will be repaired or replaced by
KOMATSU ZENOAH.
Owner’s warranty responsibilities:
– As the small off-road engine owner, you are responsible for the performance of the
required maintenance listed in your owner’s manual. KOMATSU ZENOAH
recommends that you retain all receipts covering maintenance on your small off-road
engine, but KOMATSU ZENOAH can not deny warranty solely for the lack of receipts or
for your failure to ensure the performance of all scheduled maintenance.
– As the small off-road engine owner, you should be aware, however, that KOMATSU
ZENOAH may deny you warranty coverage if your small off-road engine or a part has
failed due to abuse, neglect, improper maintenance or unapproved modification.
– You are responsible for presenting your small off-road engine to a KOMATSU ZENOAH
distribution center as soon as a problem exists. The warranty repairs should be
completed in e reasonable amount of time, not to exceed 30 days.
If you have any questions regarding your warranty rights and responsibilities, you should
contact KOMATSU ZENOAH AMERICA INC. at (770)-381-5147 or you can write to
KOMATSU ZENOAH AMERICA INC.
4344 Shackleford Road Suite 500
Norcross, Georgia 30093
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Red Max TRIMMER
MODEL LRTZ2500
2-YEAR LIMITED WARRANTY
EMISSION-RELATED PARTS, FOR TWO (2) YEARS FROM THE DATE OF ORIGINAL DELIVERY OF THE MODEL
LRTZ2500, UNIT, KOMATSU ZENOAH AMERICA INC. (THE COMPANY),
THROUGH ANY RedMax DEALER, WILL REPAIR OR REPLACE, FREE OF CHARGE, FOR THE ORIGINAL AND EACH
SUBSEQUENT PURCHASER, ANY PART OR PARTS FOUND TO BE DEFECTIVE IN MATERIAL AND/OR
WORKMANSHIP. EMISSION-RELATED PARTS ARE:
THE CARBURETOR ASSY, COIL ASSY, ROTOR, SPARKPLUG,
AIR FILTER, FUEL FILTER, INTAKE MANIFOLD, AND THE GASKETS
ALL OTHER PARTS EXCEPT ABOVE PARTS, FOR TWO (2) YEARS OF HOME USE [ ONE (1) YEAR FOR ANY OTHER
USE ] FROM THE DATE OF ORIGINAL ANY DELIVERY OF THE MODEL LRTZ2500 UNIT, THE COMPANY,
THROUGH ANY RedMax DEALER, WILL REPAIR OR REPLACE, FREE OF CHARGE, FOR THE ORIGINAL PURCHASER,
ANY PART OF PARTS FOUND TO BE DEFECTIVE IN MATERIAL AND/OR WORKMANSHIP. THIS IS THE EXCLUSIVE
REMEDY.
THE PURCHASER SHALL BEAR COSTS OF TRANSPORTING THE UNIT TO AND FROM THE RedMax DEALER.
THE PURCHASER SHALL NOT BE CHARGED FOR DIAGNOSTIC LABOR WHICH LEADS TO THE DETERMINATION
THAT A WARRANTED PART IS DEFECTIVE, IF THE DIAGNOSTIC WORK IS PERFORMED AT THE RedMax DEALER.
THE PURCHASER OR OWNER IS RESPONSIBLE FOR THE PERFORMANCE OF THE REQUIRED MAINTENANCE AS
DEFINED BY THE MANUFACTURER IN THE OWNER/OPERATOR MANUAL.
ANY WARRANTED PART WHICH IS NOT SCHEDULED FOR REPLACEMENT AS REQUIRED MAINTENANCE, OR
WHICH IS SCHEDULED ONLY FOR REGULAR INSPECTION TO THE EFFECT OF "REPAIR OR REPLACE AS
NECESSARY" SHALL BE WARRANTED FOR THE WARRANTY PERIOD.ANY WARRANTED PART WHICH IS
TIME UP TO THE FIRST SCHEDULED REPLACEMNET POINT FOR THE PART.
ANY REPLACEMENT PART THAT IS EQUIVALENT IN PERFORMANCE AND DULABILITY MAY BE USED IN NON-
WARRANTY MAINTENANCE OR REPAIRS, AND SHALL NOT REDUCE THE WARRANTY OBLIGATION OF THE
COMPANY.
THE COMPANY IS LIABLE FOR DAMAGES TO OTHER ENGINE COMPONENTS CAUSED BY THE FAIRURE OF A
WARRANTED PARTS STILL UNDER WARRANTY.
THE WARRANTY DOES NOT APPLY TO THOSE UNITS WHICH HAVE BEEN DAMAGED BY NEGLIGENCE OF
INSTRUCTION LISTED IN THE OWNER/OPERATOR MANUAL FOR PROPER USE AND MAINTENANCE OF THE UNITS,
ACCIDENT MISHANDLING, ALTERATION, ABUSE, IMPROPER LUBULICATION, USE OF ANY PARTS OR ACCESSARIES
OTHER THAN THOSE SPECIFIED BY THE COMPANY, OR OTHER CAUSES BEYOND THE CONPANY'S CONTROL.
THIS WARRANTY DOES NOT COVER THOSE PARTS REPLACED BY NORMAL WEAR OR HARMLESS CHANGES IN
THEIR APPEARANCE.
THERE ARE NO OTHER EXPRESS WARRANTIES.
IMPLIED WARRANTIES INCLUDING THOSE OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE LIMITED TO TWO (2) YEARS OF HOME USE [ ONE (1) YEAR FOR ANY OTHER USE ] FROM THE ORIGINAL
DELIVERY DATE.
LIABILITIES FOR INCIDENTAL OR CONSEQUENTIAL DAMAGE UNDER ANY AND ALL WARRANTIES
ARE EXCLUDED.
SOME STATES DO NOT ALLOW LIMITATION ON HOW LONG AN IMPLIED WARRANTY LASTS OR EXCLUSION OR
LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMINATION OR EXCLUSION MAY
NOT APPLY TO YOU.
THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY
FROM STATE TO STATE.
IF YOU NEED TO OBTAIN INFORMATION ABOUT THE NEAREST SERVICE CENTER, PLEASE CALL KOMATSU
ZENOAH AMERICA INC. AT (770)-381-5147.
IMPORTANT: YOU WILL RECEIVE A WARRANTY REGISTRATION CARD AT TIME OF PURCHASE.PLEASE FILL
OUT THE CARD AND SEND IT TO RedMax / KOMATSU ZENOA AMERICA WITHIN SEVEN (7) DAYS.BE SURE TO KEEP
A COPY FOR YOUR RECORDS.
KOMATSU ZENOAH AMERICA INC.
4344 Shackleford Road Suite 500
Norcross, Georgia 30093
Download from Www.Somanuals.com. All Manuals Search And Download.
KOMATSU ZENOAH AMERICA INC.
4344 Shackleford Road Suite 500
Norcross, Georgia 30093
© Printed in Japan
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