RedMax LRTZ2500 Operator Manual


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RedMax LRTZ2500 Operator Manual | Manualzz

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

Related manuals

Frequently Answers and Questions

What type of engine does the RedMax LRTZ2500 have?
The RedMax LRTZ2500 has a 1.2Hp 2-stroke gasoline engine.
What is the cutting width of the RedMax LRTZ2500?
The cutting width of the RedMax LRTZ2500 is 16 inches.
Can the RedMax LRTZ2500 trim in hard-to-reach places?
Yes, the RedMax LRTZ2500 has a 90-degree adjustable head that allows you to trim in hard-to-reach places.
Does the RedMax LRTZ2500 come with a shoulder strap?
Yes, the RedMax LRTZ2500 comes with a shoulder strap for added comfort during extended use.
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