RedMax LRTZ2500 Operator Manual
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32 Pages
RedMax GZ25N is a powerful and versatile long reach trimmer designed to tackle tough overgrowth and maintain your lawn with ease. Equipped with a durable 25.4cc Zenoah GZ25N engine, this trimmer delivers reliable performance and ample power to cut through thick weeds, grass, and small saplings with precision. Its innovative design features a 90-degree adjustable cutting head, allowing you to trim at various angles and reach difficult areas effortlessly.
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T1503-93110(912)
OWNER / OPERATOR MANUAL
LONG REACH TRIMMER
LRTZ2500
WARNING
The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.
WARNING
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
INFORMATION
This machine is equipped with an Overload Cancellation
Mechanism.
When the cutting blades have got into metal wires or those twigs difficult to cut, the mechanism acts as a shock absorber, and protects the drive gears and the blades from severe reaction which could give damage to those parts.
When the blades are frequently caught by twigs, please check the following points:
1. Size of the twigs. NEVER TRY TO CUT TWIGS
THICKER THAN 3/16” (5mm).
2. Condition of the blade edges. REPLACE THE WORN
OUT BLADES.
For the detail of the mechanism, please see below.
Thank you for choosing our product.
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
1. Parts location
1. Loop handle
2. Shoulder strap hanger
3. Ignition switch
4. Throttle cable
5. Throttle lever
6. Throttle set button
7. Drive shaft housing
8. Blade
9. Gear case
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
Displacement ··········································································· 1.6cu-in (25.4cm
3 )
Max. output ······················································· 1.2Hp (0.9kW)at 7500/min -1 (rpm)
Idle speed ·············································································3000±200/min -1 (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 ❳
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 ❳
❲ 6 ❳
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.
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 ❳
❲ 8 ❳
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.
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 ❳
❲ 10 ❳
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.
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 ❳
6. Set up
SE1
SE2
SE3
(1)
■ MOUNTING ENGINE (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.
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.
■ INSTALLING HANDLE
• Mount the handle to the shaft tube and clamp it at a location that is comfortable to you. (SE3)
(1) About 19 inches (48cm)
❲ 12 ❳
6. Set up
SE4
■ 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.
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 ❳
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)
50:1 MIXING CHART
GASOLINE gal.
1
2-CYCLE OIL fl.oz 2.6
2
5.2
3 4
7.8 10.4
5
13
GASOLINE liter 1 2 3 4 5
2-CYCLE OIL ml 20 40 60 80 100
RECOMMENDED MIXING RATIO
GASOLINE 50:OIL 1
• 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.
• 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 ❳
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 ❳
8. Operation
OP1
OP2
OP3
(6)
(4)
(5)
OP4
(7)
(1)
(2)
(3)
■ STARTING ENGINE
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.
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)
(1) choke lever (2) close (3) open
(4) ignition switch (5) start (6) stop
(7) throttle set button
IMPORTANT
• Avoid pulling the rope to its end or returning it by releasing the knob. Such actions can cause starter failures.
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 ❳
8. Operation
OP5
OP6
.04 in
(1~2mm) (1)
(1)
■ 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)
(1) cable adjuster
■ 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.
(1) idle adjusting screw
NOTE
• Warm up the engine before adjusting the idling speed.
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
❲ 17 ❳
8. Operation
OP7 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.
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
❲ 18 ❳
9. Maintenance
■ MAINTENANCE CHART system/compornent procedure fuel leaks, fuel spillage wipe out fuel tank, air filter, fuel filter inspect/clean see ■ADJUSTING idle adjusting screw
IDLING SPEED (p.17) clean and readjust spark plug plug gap cylinder fins, intake air cooling vent clean muffler, spark arrester, cylinder exhaust port clean throttle lever, ignition switch check operation cutting parts replace if something's wrong gear case screws/nuts/bolts grease tighten/replace before hours hours hours note use after after after
✔ every every every
25 50 100
✔ ✔ replace, if necessary replace carburetor
✔ if necessary
GAP: .025in(0.6~0.7mm)
✔ replace, if necessary
✔
✔
✔
✔
✔
✔
✔ not adjusting screws
MA1
■ 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.
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 ❳
MA3
MA4
(1)
(1)
❲ 20 ❳
9. Maintenance
MA2
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.
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.
■ 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) air filter
■ FUEL FILTER
• When the engine runs short of fuel supply, check the fuel cap and the fuel filter for blockage.
(MA4)
(1) fuel filter
9. Maintenance
MA5
.025 in
0.655mm
MA6
(1)
■ 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)
• REPLACEMENT PLUG IS A NGK CMR7A.
IMPORTANT
• 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)
(1) spark arrester
❲ 21 ❳
9. Maintenance
MA7
MA8
(2)
❲ 22 ❳
(1)
■ 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
• 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
(2) intake air cooling vent (back)
■ 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)
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.
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 ❳
11. Troubleshooting guide
Case 1. Starting failure fuel tank
CHECK PROBABLE CAUSES
➞ incorrect fuel fuel filter ➞ fuel filter is clogged carburetor adjustment screw ➞ out of normal range sparking (no spark) spark plug
ACTION
➞ drain it and with correct fuel
➞ clean
➞ adjust to normal range
➞ spark plug is fouled/wet ➞ clean/dry
➞ plug gap is incorrect ➞ correct (GAP: 0.6~0.7mm)
➞ disconnected ➞ retighten
Case 2. Engine starts but does not keep running/Hard re-starting.
fuel tank
CHECK PROBABLE CAUSES ACTION
➞ incorrect fuel or staled fuel ➞ drain it and with correct fuel carburetor adjustment screw ➞ out of normal range muffler,cylinder (exhaust port) ➞ carbon is built-up
➞
➞ adjust to normal range wipe away air cleaner cylinder fin, fan cover
➞ clogged with dust
➞ clogged with dust
➞ wash
➞ clean
When your unit seems to need further service, please consult with our RedMax service shop in your area.
❲ 24 ❳
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 ❳
12. Parts list
Fig.1 DRIVE UNIT LRTZ2500 (S/N 000000 and up)
Fig.2 CUTTING UNIT LRTZ2500 (S/N 000000 and up)
❲ 26 ❳
Fig.1 DRIVE UNIT LRTZ2500 (S/N 000000 and up)
Key# Description
1 PIPE-COMP
2 SHAFT
3 GRIP
4 LEVER-COMP
5 • LEVER
6 • CORD(A)
7 • CORD(B)
8 TUBE
9 CABLE-COMP
10 HANGER-ASS’Y
11 • HANGER-COMP
12 • • HANGER
13 • • CLAMP
14 • • SLEEVE
15 • SCREW
Part Number Q'ty
T3002-12100 1
3520-12212 1
3577-32141 1
T3002-12200 1
6110-14410 1
T3002-12220 1
T3002-12230 1
T3002-12240 1
T3002-83110 1
6420-17300 1
6420-17400 1
9366-17110 1
9366-17120 1
6420-17410 1
0263-90525 1
Key# Description
16 NAME-PLATE
17 CAUTION-PLATE
18 HANDLE-ASS’Y
19 • HANDLE
20 • CLAMP
21 • SCREW
22 STRAP-ASS’Y
23 TOOL-SET
24 • DRIVER
25 • SOCKET
26 • WRENCH
27 • SPANNER
28 • BAR
29 GOGGLE
Fig.2 CUTTING UNIT LRTZ2500 (S/N 000000 and up)
Key# Description
1 LEVER, clamp
2 WASHER M6
3 WASHER 6x16x2.0
4 ANGLE ADJUSTER
5 BOLT M6x12
6 CASING A SET
7 • CASING A
8 • PLATE
9 GREESE FITTING
10 LABEL
11 SCREW M4x8
12 COVER
13 SNAP RING
14 BEBEL GEAR
15 SNAP RING
16 BEARING
17 CRANK SHAFT
18 SNAP RING
19 BLADE
20 BEARING 608Z
21 COVER
22 BOLT M4x10
23 FELT
24 SCREW
25 WASHER
26 SCREW L17
27 SCREW M5x20
28 GUIDE PLATE
29 PLATE
30 NUT M5
31 NUT M6
32 WASHER 6x15x2.0
33 BEARING 608 2RS
Part Number Q'ty
6598-13110 1
0290-20615 1
6598-13130 1
6782-13140 1
0225-10612 2
6782-13200 1
––––––––– 1
6782-13220 1
3199-13350 3
6782-13250 1
0263-10408 2
6598-13320 1
6598-13330 1
6782-13340 1
04065-02612 1
06004-06000 1
6782-13370 1
04064-02815 1
6782-13411 2
6782-13430 1
6782-13440 1
6782-13450 4
6782-13460 1
3884-11750 1
3880-11780 4
6598-13510 3
6598-13530 2
6782-13540 1
6782-13550 1
6782-14470 2
3880-11790 4
6782-13650 1
6598-13430 1
Key# Description
34 SNAP RING
35 SHAFT KIT
36 • • SHAFT
37 • • GEAR(B)
38 • • GEAR(C)
39 • • BOSS
40 • • SPRING
41 • • PLATE
42 • • WASHER
43 • • WASHER
44 • NUT M6
45 • WASHER
46 O-RING P41
47 SNAP RING
48 BEARING
49 CASING B
50 WASHER 6x16x2.0
51 BOLT M6x12
52 WASHER 5x10x1.0
53 BOLT M5x10
54 BOLT M5x30
55 JOINT
56 GEAR SHAFT B
57 BEARING 6900RS
58 SNAP RING
59 BEVEL GEAR
60 SNAP RING
61 PACKING
62 COVER
63 SCREW M4x8
64 BLADE COVER
65 SPACER
Part Number Q'ty
T3053-12510 1
6425-12552 1
6420-14100 1
6420-14311 1
6420-14320 1
0263-90535 4
T3002-17200 1
T3002-91000 1
1030-91340 1
T3002-91310 1
09007-00425 1
3540-91120 1
3540-91110 1
T3002-91190 1
Part Number Q'ty
04065-02212 1
T4008-06010 1
––––––––– 1
––––––––– 1
T4008-13630 1
––––––––– 1
T4008-13650 1
T4008-13660 1
T4008-13670 1
T4008-13680 1
0280-10605 1
0290-20615 1
6598-13620 1
04065-02612 1
06004-06000 1
6782-13710 1
6598-13130 1
0225-10612 1
6782-13720 1
01252-30510 1
3350-21320 1
6782-13810 1
6598-13820 1
6782-13830 2
04065-02212 1
6782-13850 1
6598-13330 1
6598-13860 1
6598-13870 1
0263-10408 2
6782-13910 1
6367-13990 1
❲ 27 ❳
12. Parts list
Fig.3 ENGINE UNIT LRTZ2500 (S/N 000479 and up)
❲ 28 ❳
Fig.3 ENGINE UNIT LRTZ2500 (S/N 000479 and up)
Description
CYLINDER
GASKET, base
BOLT
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
• BRACKET
Key#
55
56
57
58
59
50
51
52
53
54
45
46
47
48
49
40
41
42
43
44
65
66
67
68
69
60
61
62
63
64
70
71
35
36
37
38
39
30
31
32
33
34
25
26
27
28
29
20
21
22
23
24
15
16
17
18
19
10
11
12
13
14
5
6
7
8
9
1
2
3
4
Description
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
• NUT, adjuster
• SCREW, adjuster
• SCREW
• WASHER
SCREW
MUFFLER ASS’Y
• MUFFLER
• ARRESTER
BOLT
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
CORD
CORD, carth
TUBE
PLUG
GROMMET
Key#
121
122
123
124
125
126
127
128
129
130
111
112
113
114
115
116
117
118
119
120
131
132
133
134
135
136
137
138
139
140
141
142
101
102
103
104
105
106
107
108
109
110
96
97
98
99
100
91
92
93
94
95
86
87
88
89
90
81
82
83
84
85
76
77
78
79
80
72
73
74
75
Part Number Q'ty
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
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
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
–
1
–
–
–
–
–
–
–
–
2
2
1
1
1
1
1
1
1
1
1
1
1
1
–
–
1
1
1
1
2
1
2
1
2
1
1
1
1
1
2
1
2
1
1
1
3
2
6
1
3
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
Part Number Q'ty
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
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
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
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
3
–
1
1
1
1
1
1
1
2
1
1
1
1
1
1
2
2
2
1
1
1
1
2
2
1
1
2
1
1
4
1
1
1
1
1
1
1
1
1
1
2
1
1
1
2
1
1
4
1
❲ 29 ❳
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 emissionrelated 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
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
KOMATSU ZENOAH AMERICA INC.
4344 Shackleford Road Suite 500
Norcross, Georgia 30093
© Printed in Japan
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Key Features
- 1.2Hp engine for plenty of power
- 16-inch cutting width for quick and easy trimming
- 90-degree adjustable head for trimming in hard-to-reach places
- Shoulder strap for added comfort
- Overload Cancellation Mechanism to protect gears and blades
- Durable construction for long-lasting use