RedMax BCZ3050S Commercial Straight Shaft String Trimmer Owner’s Manual

June 6, 2024
RedMax

RedMax BCZ3050S Commercial Straight Shaft String Trimmer Owner's Manual

RedMax BCZ3050S Commercial Straight Shaft String Trimmer Owner's
Manual

Introduction

Product description
This product is a grass trimmer/brush cutter with a combustion engine.
Work is constantly in progress to increase your safety and efficiency during operation. Speak to your servicing dealer for more information.

Intended use
The product can be used with a grass blade or a trimmer head to cut different types of vegetation. Do not use the product for other tasks than grass trimming and grass clearing. Use a grass blade or trimmer head to cut grass.

Note: National or local regulations may regulate the use. Comply to given regulations.

Product overview

RedMax BCZ3050S Commercial Straight Shaft String Trimmer Owner's Manual -
Product overview

  1. Loop handle
  2. Suspension point
  3. Stop switch
  4. Throttle cable
  5. Throttle trigger
  6. Shaft
  7. Cutting attachment guard
  8. Trimmer head
  9. Bevel gear
  10. Spark arrestor
  11. Starter rope handle
  12. Fuel tank
  13. Air purge bulb
  14. Choke
  15. Air filter cover
  16. Handlebar
  17. Hip pad
  18. Vibration damping system
  19. Operator’s manual
  20. Muffler
  21. Idle adjustment screw
  22. Hex key
  23. Combination wrench

Symbols on the product

RedMax BCZ3050S Commercial Straight Shaft String Trimmer Owner's Manual -
Symbols on the product RedMax BCZ3050S Commercial Straight Shaft
String Trimmer Owner's Manual - Symbols on the product

Note: Other symbols/decals on the product refer to certification requirements for some markets.

EPA
An emission control decal is located on the engine.

EMISSION CONTROL INFORMATION THIS ENGINE MEETS U.S. EPA AND CALIFORNIA EXH / EVP REGS FOR 20101 S.O.R.E. ENGINE FAMILY : 9HQZS.0294NO2 DISPL.: 29cc EMISSION CONTROL SYSTEM : EXH;EM/EVP;SP*3
COMPLIANCE PERIOD : 300 HOURS REFER TO OPERATOR’S MANUAL FOR MAINTE- NANCE, SPECIFICATIONS AND ADJUSTMENTS.

MANUFACTURED: USE JASO FD OR ISO L-EGD GRADE 50:1 OIL

1: The year will be changed each year of manufacturing.
2: The initial will be changed each year of manufacturing.
*3: SP: Sealed tank made of HDPE or PE.

California Proposition 65

WARNING!
The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.

Canada EMC
This spark ignition system complies with the Canadian standard ICES-002.

Product liability
As referred to in the product liability laws, we are not liable for damages that our product causes if:

  • the product is incorrectly repaired.
  • the product is repaired with parts that are not from the manufacturer or not approved by the manufacturer.
  • the product has an accessory that is not from the manufacturer or not approved by the manufacturer.
  • the product is not repaired at an approved service center or by an approved authority.

Safety

Safety definitions
The definitions below give the level of severity for each signal word.

WARNING: Injury to persons.
CAUTION: Damage to the product.
Note: This information makes the product easier to use.

General safety instructions

****WARNING: Read the warning instructions that follow before you use the product.

  • Do not do changes to the product without approval from the manufacturer and always use original accessories. Not approved modifications and/or accessories can result in serious injury or the death of the operator or others.
  • The inner side of the muffler contains chemicals that may be carcinogenic. Do not touch the muffler if it is damaged.
  • This product produces an electromagnetic field during operation, which can cause interference with medical implants. This can cause serious injury or death. Speak to your physician and the medical implant manufacturer before use.
  • Do not touch the spark plug or spark plug cord when the engine is on. Risk of electrical shock.
  • Your warranty may not be approved for damages caused by accessories or spare parts that are not approved.

Safety instructions for assembly

WARNING: Read the warning instructions that follow before you use the product.

  • Remove the spark plug cap from the spark plug before you assemble the product.
  • Use approved protective gloves.
  • Make sure that you assemble the cover and shaft correctly before you start the engine.
  • The drive disc and support flange must engage correctly in the center hole of the cutting attachment. A cutting attachment that is attached incorrectly can cause serious injury or death of the operator or others.
  • To operate the product safely and prevent injury to the operator or other persons, the product must always be attached correctly to the harness.

Safety instructions for operation
WARNING: Read the warning instructions that follow before you use the product.

  • This product can be dangerous and cause serious injury or death to the operator or others. Be careful and use the product correctly.

  • Make sure that you understand the difference between grass clearing and grass trimming.

  • Always speak to a professional or servicing dealer if you are not sure how to operate the product. Do not do tasks that you are not sure of.

  • Do not use a defect product. Do the safety checks and maintenance given in this operator’s manual. All other maintenance must be done by approved servicing personnel.

  • Install all covers, guards, handles and other parts before use. To prevent electrical shock, make sure that the spark plug cap and ignition cable are not damaged.

  • Do not operate the product when you are tired, ill or under the influence of alcohol or other drugs. These conditions can decrease your vision, judgment or coordination.

  • Do not use the product in bad weather, such as fog, rain, strong winds and intense cold. To do work in bad weather can cause tiredness and dangerous conditions.

  • Do not let children operate or stay near the product. The product has a spring-loaded mechanism on the start/stop switch and can be started by a small child.
    This can cause serious injury or death. Always remove the spark plug cap when the product is not used

  • Keep a safety distance at a minimum of 15 m to persons or animals. If persons of animals come nearer than 15 m, stop the product. Point the product away from persons, animals, open windows and other objects.

  • Make sure that you can move and keep a stable position. Do not overreach. Do a check of the work area for possible obstacles such as rocks. Be careful if you operate the product in a slope.

  • Always hold the product with 2 hands. Hold the product on the right side of your body and keep the cutting attachment below waist level.

  • Stop the engine before you move to another work area. Use the transportation guard.

  • Do not put the product on the ground with the engine on.

  • Stop the engine and cutting equipment before you remove material from the blade shaft. Let the bevel gear become cool. Risk of serious injury.

  • Look out for thrown objects. Do not bend over the cutting attachment guard. Stones, rubbish, etc. can be thrown up into the eyes and cause blindness or serious injury.

  • Always stop the engine before you clean the product.

  • Always set the product to idle speed after each operation. Long periods at full throttle without load can cause serious engine damage.

  • Listen for warning signals or shouts when you use hearing protection. Always remove your hearing protection when the engine has stopped.

  • Too much vibration can cause damage to the circulation or the nervous system. Speak to your physician if you receive symptoms such as numbness, loss of feeling, tingling, pricking, pain, loss of strength or changes in skin color in your fingers, hands or wrists.

  • Keep all body parts away from the cutting attachment and hot surfaces.

Personal protective equipment

WARNING: Read the warning instructions that follow before you use the product.

  • Use approved personal protective equipment when you use the product. Personal protective equipment cannot fully prevent injury but it can decrease the degree of injury. Speak to your dealer for more information.
  • Use a protective helmet.
  • Use approved hearing protection. Long-term exposure to noise can result in permanent damage to the hearing.
  • Use approved eye protection. If you use a visor, you must also use approved protective goggles. Approved protective goggles must agree with the ANSI Z87.1 standard in the USA or EN 166 in EU countries.
  • Use protective gloves during operation and maintenance.
  • Use protective boots or shoes with non-slip soles.
  • Use clothing made of a strong fabric. Your clothing must be close-fitting but not limit your movements. Use long pants and put your hair behind your shoulders. Do not use jewelry and open shoes.
  • Keep first aid equipment near.

Cutting attachment
WARNING: The cutting attachment must not rotate when you do work on it. Make sure that the engine has stopped. Remove the spark plug cap before you do work on the cutting attachment.

WARNING: Make sure that the cutting attachment is not damaged. A damaged cutting attachment can cause accidents. Replace a damaged cutting attachment.

WARNING: Use the correct cutting attachment. Only use the cutting attachment with the guards we recommend, refer to Accessories on page 18.

Cutting equipment

  • The trimmer head is used to cut grass.
  • The blade is used to cut coarse grass.
  • An incorrectly sharpened or damaged blade increases the risk of accidents. Keep the teeth of the blade correctly sharpened. Obey the instructions in To sharpen the grass knife and grass blade on page 16 and use the recommended file gauge.

Safety devices on the product

WARNING: Read the warning instructions that follow before you use the product.

In this section the product’s safety features, its purpose and how checks and maintenance should be carried out to ensure that it operates correctly. See instructions under the heading Product overview on page 2 to find where these parts are located on your product.

The life span of the product can be reduced and the risk of accidents can increase if product maintenance is not carried out correctly and if service and/or repairs are not carried out professionally. If you need further information please contact your nearest servicing dealer.

WARNING: Never use a product with defective safety components. The product’s safety equipment must be inspected and maintained as described in this section. If your product fails any of these checks, contact your service agent to get it repaired.

CAUTION: All servicing and repair work on the machine requires special training. This is especially true of the machines safety equipment. If your machine fails any of the checks described below you must contact your service agent. When you buy any of our products we guarantee the availability of professional repairs and service. If the retailer who sells your machine is not a servicing dealer, ask him for the address of your nearest service agent.

To do a check of the throttle trigger lockout
The throttle trigger lockout prevents accidental operation of the throttle trigger.

  1. Push the throttle trigger lockout (A) and make sure that the throttle trigger is released (B).

RedMax BCZ3050S Commercial Straight Shaft String Trimmer Owner's Manual -
Push the throttle trigger lockout

  1. Release the throttle trigger lockout and make sure that the throttle trigger is locked at idle speed.

RedMax BCZ3050S Commercial Straight Shaft String Trimmer Owner's Manual -
Release the throttle trigger lockout

  1. Push the throttle trigger lockout and make sure that it goes back to its initial position when you release it.

RedMax BCZ3050S Commercial Straight Shaft String Trimmer Owner's Manual -
Push the throttle trigger lockout and make sure

  1. Make sure that the throttle trigger and throttle trigger lockout move freely and that the return springs operate correctly.

RedMax BCZ3050S Commercial Straight Shaft String Trimmer Owner's Manual -
Make sure that the throttle trigger and throttle

  1. Start the product and apply full throttle. Refer to To prepare the product for start on page 11.
  2. Release the throttle trigger and make sure that the cutting attachment stops. If the cutting attachment rotates with the throttle in the idle position, do a check of the carburettor adjustments. Refer to To adjust the idle speed on page 15.

To do a check of the stop switch

  1. Start the engine.
  2. Move the stop switch to the stop position and make sure that the engine stops. To see where the stop switch is on your product, refer to Product overview on page 2.

WARNING: The stop switch automatically goes back to start position. To prevent accidental start, remove the spark plug cap from the spark plug when you assemble or do maintenance on the product.

To do a check of the cutting attachment guard
The cutting attachment guard prevents injuries from objects that eject in the direction of the operator. It also prevents injuries that occur if you touch the cutting attachment. To see where the cutting attachment guard is on your product, refer to Product overview on page 2.

  1. Do a visual check for damages, for example cracks.
  2. Replace the cutting attachment guard if it is damaged.

To do a check of the vibration damping system

WARNING: Use of incorrectly wound cord or an incorrect cutting attachment increases the level of vibration.

The vibration damping system decreases vibration between the engine unit and the shaft unit, which makes the operation easier. Refer to Product overview on page 2 to see where the vibration damping units are on your product.

  1. Stop the engine.
  2. Do a visual check for deformation and damage, for example cracks.
  3. Make sure that the vibration damping units are attached correctly.

To do a check of the muffler

WARNING: Do not use a product with a defective muffler.

WARNING: The muffler becomes very hot during and after operation, also at idle speed. Use protective gloves to prevent burn injuries.

WARNING: The inner side of the muffler contains chemicals that may be carcinogenic. Do not touch the muffler if it is damaged.

  • Regularly do a visual check of the muffler. The muffler keeps noise levels to a minimum and sends exhaust fumes away from the operator. Refer to Product overview on page 2.

To do a check of the locknut (BCZ3050SW)
WARNING: Stop the engine, use protective gloves and be careful around the sharp edges of the cutting attachment.

  • Make sure that the locknut is attached and tightened correctly. Refer to To install the cutting attachment guard and the blade (BCZ3050SW) on page 9.

Fuel safety

WARNING: Read the warning instructions that follow before you use the product.

  • Do not mix or add the fuel indoors or near a heat source.
  • Do not start the product if there is fuel or oil on the product or on your body.
  • Do not start the product if the engine has a fuel leak. Examine the engine for fuel leaks regularly.
  • Always be careful with fuel. Fuel is flammable and the fuel fumes are explosive and can cause serious injury or death.
  • Do not breathe in the fuel fumes, it can cause injury. Make sure that there is a sufficient airflow.
  • Do not smoke near the fuel or the engine.
  • Do not put the product or a fuel container near warm objects, an open flame, a spark or a pilot light.
  • Always use approved containers for storage and transportation of fuel.

Safety instructions for maintenance
WARNING: Stop the product fully before you do maintenance. Make sure that the cutting equipment has stopped fully and disconnect the spark plug cap before maintenance.

WARNING: A defective cutting attachment increases the risk of accidents.

  • Only use cutting attachments with the cutting attachment guards that RedMax recommends. Refer to Accessories on page 18.
    Safety for hot surfaces

WARNING: The cylinder cover and the air intake are hot during operation and can cause burns to the skin. Keep body parts away from these parts of the product.

Assembly

Introduction
WARNING : Before you assemble the product, you must read and understand the safety chapter.

WARNING:  Remove the spark plug cable from the spark plug before you assemble the product.

To assemble the loop handle (BCZ3050S, BCZ3060TS)

  1. Make sure that the distance (A) between the loop handle and the vibration damping system is approximately 48 cm/19 in.

RedMax BCZ3050S Commercial Straight Shaft String Trimmer Owner's Manual -
Make sure that the distance

  1. Install the screws (B) to the bracket to attach the loop handle to the shaft.

To install the handlebar and throttle cable

  1. Make sure that the distance (A) between the vibration damping system and handlebar clamp is approximately 37 cm/14.5 in.

RedMax BCZ3050S Commercial Straight Shaft String Trimmer Owner's Manual -
Make sure that the distance \(A\)

  1. Put the supplied tool into the top hole in the bevel gear.
  2. Attach the throttle cable to the handlebar and shaft with cable ties (C).

To install the cutting attachment guard and the trimmer head (BCZ3050S, BCZ3060TS, BCZ3050SW)

  1. Put the cutting attachment guard (A) onto the shaft and attach it with the 2 bolts (B). Make sure that you use the correct cutting attachment guard for the trimmer head.

RedMax BCZ3050S Commercial Straight Shaft String Trimmer Owner's Manual -
Put the cutting attachment guard

  1. Install the screws (B) to the bracket to attach the handlebar to the shaft.

  2. Install the drive disc (C), spacer (D) and trimmer head (E) on the output shaft.

    RedMax BCZ3050S Commercial Straight Shaft String Trimmer Owner's Manual -
Install the drive disc
    WARNING:
    When you install the cutting attachment, the locking holes on the drive disc must point in the direction of the bevel gear. If the drive disc is incorrectly assembled, it can cause serious injury or death to the operator or others.

  3. Lock the trimmer head to the output shaft by hand.

To install the cutting attachment guard and the blade (BCZ3050SW)

  1. Put the cutting attachment guard (A) onto the shaft and attach it with the 2 bolts (B). Make sure that you use the correct cutting attachment guard for the blade.

RedMax BCZ3050S Commercial Straight Shaft String Trimmer Owner's Manual -
Put the cutting attachment guard \(A\)

  1. Put the supplied tool into the hole in the bevel gear.
  2. Install the blade (C), support cup (D), support flange (E) and locknut (F) on the output shaft.

RedMax BCZ3050S Commercial Straight Shaft String Trimmer Owner's Manual -
Install the blade \(C\)

  1. Tighten the locknut.
  2. Attach the harness to the suspension point on the shaft. Refer to Product overview on page 2.

WARNING: Do not operate the product without the harness.

Operation

Introduction

WARNING : Read and understand the safety chapter before you use the product.

To do before you operate the product

  • Examine the work area to make sure that you know the type of terrain. Examine the slope of the ground and if there are obstacles as stones, branches or ditches.
  • Do an overhaul of the product.
  • Do the safety inspections, maintenance and service that are given in this manual.
  • If blade is used, make sure that the locknut is tightened correctly.
  • Make sure that all covers and the cutting attachment guard are correctly attached and are not damaged. Replace damaged parts.

To select the correct cutting attachment for the operation (BCZ3050SW)

  • Select the correct cutting attachment for the operation. Refer to the conditions that follow.
    a) For smaller vegetation near the ground, select RedMax 9 in. 22-tooth SST229 blade or RedMax 9 in. 24-tooth SST249 blade.
    b) For thick grass or vegetation, select RedMax 8 in. 8-tooth SGB088 blade or RedMax 9 in. 8tooth SGB089 blade.
    c) For thin grass, select RedMax 8 in. 4-tooth SGB048 blade, RedMax 9 in. 4-tooth SGB049 blade or trimmer head with nylon thread.
    d) For grass, select RedMax trimmer head with nylon thread.

Fuel
This product has a two-stroke engine.

CAUTION: Incorrect type of fuel can result in engine damage. Use a mixture of gasoline and two-stroke oil.

Premixed fuel

  • Use RedMax premixed alkylate fuel for best performance and extension of the engine life. This fuel contains less harmful chemicals compared to regular fuel, which decreases harmful exhaust fumes. The quantity of remains after combustion is lower with this fuel, which keeps the components of the engine more clean.

To mix fuel
Gasoline

  • Use good quality unleaded gasoline with a maximum of 10% ethanol contents.

CAUTION: Do not use gasoline with an octane grade less than 90 RON/87 AKI. Use of a lower octane grade can cause engine knocking, which causes engine damages.

Two-stroke oil

  • For best results and performance use RedMax two stroke oil.
  • If RedMax two-stroke oil is not available, use a two stroke oil of good quality for air-cooled engines. Speak to your servicing dealer to select the correct oil.

CAUTION: Do not use two-stroke oil for water-cooled outboard engines, also referred to as outboard oil. Do not use oil for four-stroke engines.

To mix gasoline and two-stroke oil

RedMax BCZ3050S Commercial Straight Shaft String Trimmer Owner's Manual - To
mix gasoline and two-stroke oil

CAUTION: Small errors can influence the ratio of the mixture drastically when you mix small quantities of fuel. Measure the quantity of oil carefully and make sure that you get the correct mixture.

RedMax BCZ3050S Commercial Straight Shaft String Trimmer Owner's Manual -
Fill half the quantity of gasoline in a clean container

  1. Fill half the quantity of gasoline in a clean container for fuel.
  2. Add the full quantity of oil.
  3. Shake the fuel mixture.
  4. Add the remaining quantity of gasoline to the container.
  5. Carefully shake the fuel mixture.

CAUTION: Do not mix fuel for more than 1 month at a time.

To fill the fuel tank
WARNING: Obey the procedure that follows for your safety.

  1. Stop the engine and let the engine become cool.

  2. Clean the area around the fuel tank cap.

  3. Shake the container and make sure that the fuel is fully mixed.

  4. Remove the fuel tank cap slowly to release the pressure.

  5. Fill the fuel tank.
    CAUTION: Make sure that there is not too much fuel in the fuel tank. The fuel expands when it becomes hot.

  6. Tighten the fuel tank cap carefully.

  7. Clean fuel spillage on and around the product.

  8. Move the product 3 m/10 ft or more away from the refuelling area and fuel source before you start the engine.

Note: To see where the fuel tank is on your product, refer to Introduction on page 2.

To prepare the product for start

  1. Push the stop switch into the “RUN” position.
    RedMax BCZ3050S Commercial Straight Shaft String Trimmer Owner's Manual -
Push the stop switch into the RUN position

  2. Push the air purge bulb again and again until the fuel starts to fill the bulb.RedMax BCZ3050S Commercial Straight Shaft String Trimmer Owner's Manual - Push the air purge bulb again and again until
    Note: It is not necessary to fully fill the bulb.

  3. Move the choke control to the choke position.

RedMax BCZ3050S Commercial Straight Shaft String Trimmer Owner's Manual -
Move the choke control to the choke position

WARNING: If the choke is in choke position when the engine starts, the cutting attachment starts to rotate immediately.

To start the product
WARNING: Read the warning instructions in the safety chapter before you start the product. Refer to Safety on page 4.

WARNING: The cutting head will start to rotate when the engine starts if the choke is activated.

  1. Use protective gloves.

  2. Hold the throttle trigger lockout (A) and the throttle trigger (B) with your left hand. Pull the starter rope handle quickly with your right hand until the engine fires. Release the throttle trigger after the engine starts.
    CAUTION: Do not use your feet!
    WARNING: Do not twist the starter rope around your hand.
    CAUTION: Do not pull the starter rope to full extension and do not let go of the starter rope handle.

  3. Reset the choke when the engine fires.

  4. Let the engine become warm before you operate the product.

  5. Make sure the engine runs smoothly.

Note: If the rpm of the engine does not increase, open and close the choke again.

To stop the product

  • Push the stop switch to stop the engine.

Blade thrust

  • A blade thrust is a sudden movement of the product to the side, forward or rearward. A blade thrust occurs when the grass blade hits an object that cannot be cut. In areas where it is not easy to see the material being cut the risk of blade thrust increases.
  • When a blade thrust occurs, there is a risk that the product or the operator moves out of position. A blade that moves can hit bystanders and there is a risk of injuries.
  • If a blade is bent, has cracks, is broken or damaged, discard the blade.
  • Use a sharp blade. The risk of blade thrust increases when a blade is not sharp.

Grass trimming with a trimmer head
To trim the grass

  1. Hold the trimmer head immediately above the ground at an angle. Do not push the trimmer line into the grass.RedMax BCZ3050S Commercial Straight Shaft String Trimmer Owner's Manual - Hold the trimmer head immediately
  2. Decrease the length of the trimmer line by 10-12 cm / 4-4.75 in.
  3. Decrease the engine speed to decrease the risk of damage to plants.
  4. Use 80 % throttle when you cut grass near objects.

To sweep the grass
The airflow from the rotating trimmer line can be used to remove cut grass from an area.

  1. Hold the trimmer head and the trimmer line parallel to the ground and above the ground.
  2. Apply full throttle.
  3. Move the trimmer head from side to side and sweep the grass.

WARNING: Clean the trimmer head cover each time you assemble new trimmer line to prevent unbalance and vibrations in the handles. Also do a check of the other parts of the trimmer head and clean it if necessary.

Maintenance

Introduction

WARNING: Read and understand the safety chapter before you do maintenance on the product.

Maintenance schedule

WARNING: Only do the maintenance and servicing given in this operator’s manual. For maintenance or servicing that is not given in this operator’s manual, speak to your servicing dealer.

RedMax BCZ3050S Commercial Straight Shaft String Trimmer Owner's Manual -
Maintenance RedMax BCZ3050S Commercial Straight Shaft String Trimmer Owner's Manual -
Maintenance
To do maintenance on the muffler
The muffler decreases the noise level and points the exhaust gases away from the operator.

WARNING: Mufflers get very hot during idle speed and operation and will stay hot for some time after you stop the product. Be careful around the muffler to prevent burn injuries. The hot muffler can cause a fire.

  1. Stop the product and let it cool down.
  2. Make sure that the muffler is correctly attached and that it is not damaged.
  3. Remove the spark arrestor screen.RedMax BCZ3050S Commercial Straight Shaft String Trimmer Owner's Manual - Remove the spark arrestor screen
  4. Clean the spark arrestor screen if it is blocked or replace it if it is damaged.

CAUTION: The spark arrestor screen must be replaced if it is damaged. Do not use a product without, or with a broken, spark arrestor screen if you must have a spark arrestor screen in your area. Obey local regulations and maintenance instructions.

CAUTION: If the spark arrestor screen is frequently blocked it can be a sign that the performance of the catalytic converter is decreased. Turn to your servicing dealer to examine the muffler. A blocked spark arrestor screen will cause overheating and result in damage to the cylinder and piston.

To clean the cooling system
The product has a cooling system to keep the operation temperature as low as possible.

CAUTION: A dirty or blocked cooling system makes the product too hot which causes damage to the piston and cylinder.

The cooling system has the components that follow:

  • Air intake on the starter.
  • Flywheel fins on the flywheel.
  • Cooling fins on the cylinder.
  • Cylinder cover (points cool air over the cylinder).
  • Muffler cover.
  • Muffler plate.
  • Clean the components of the cooling system with a brush weekly or more frequently in rougher conditions.

To examine the spark plug

CAUTION: Always use the recommended spark plug type. Incorrect spark plug type can cause damage to the product.

  • Examine the spark plug if the engine is low on power, is not easy to start or does not operate correctly at idle speed.

  • To decrease the risk of unwanted material on the spark plug electrodes, obey these instructions:
    a) Make sure that the idle speed is correctly adjusted.
    b) Make sure that the fuel mixture is correct.
    c) Make sure that the air filter is clean.

  • If the spark plug is dirty, clean it and make sure that the electrode gap is correct, refer to Technical data on page 18.

  • Replace the spark plug if it is necessary.

Air filter
Remove dust and dirt from the air filter to keep it clean and prevent these problems:

  • Carburettor malfunctions.
  • Problems when you start the product.
  • Loss of engine power.
  • Increased wear to engine parts.
  • Too much fuel consumption.

To clean the air filter

CAUTION: An air filter that is damaged, very dirty or soaked with fuel must always be replaced.
If you use an air filter for a long time it cannot be fully cleaned. Replace the air filter with a new one at regular intervals. 1. Move the choke up to close the choke valve.

  1. Move the choke up to close the choke valve.
  2. Remove the air filter cover and remove the air filter.RedMax BCZ3050S Commercial Straight Shaft String Trimmer Owner's Manual - Remove the air filter cover and remove the air filter
  3. Clean the air filter with warm soap water.
  4. Replace the air filter if it is too dirty to fully clean. Always replace a damaged air filter.
  5. Clean the inner surface of the filter cover with compressed air or a brush.
  6. Examine the rubber seal for wear and damage. Replace the rubber seal if it is damaged.
  7. Make sure that the filter is dry before you assemble it.

To adjust the idle speed
Note: Adjust the idle speed with the idle adjustment
screw. The idle adjustment screw is identified with a “T” mark.

  1. Make sure that the air filter is clean and that the air filter cover is installed.
  2. Start the product and let the engine become warm. 3. Do 1 of the steps that follow.
    a) If the engine stops frequently at idle speed, turn the idle adjustment screw clockwise.
    b) If the cutting equipment rotates at idle speed, turn the idle adjustment screw counter clockwise.

Note: Refer to Product overview on page 2 for the position of the idle adjustment screw.

The idle speed is correct when the engine operates smoothly in all positions. The idle speed must be below the speed when the cutting equipment starts to rotate.

WARNING: If the cutting equipment does not stop when you adjust the idle speed, speak to your nearest servicing dealer. Do not use the product until it is correctly adjusted or repaired.

Note: Refer to Technical data on page 18 for the recommended idle speed.

To examine and adjust the throttle cable

  1. Examine the play of the throttle cable. The play must be 1-2 mm/0.4-0.8 in. on the carburettor side.RedMax BCZ3050S Commercial Straight Shaft String Trimmer Owner's Manual - Examine the play of the throttle cable
  2. If the play is incorrect, adjust the throttle cable with the cable adjuster.

To sharpen the grass knife and grass blade

WARNING: Stop the engine. Use protective gloves.

  • To sharpen the grass knife or grass blade correctly, refer to the instructions that come with the cutting attachment.
  • Sharpen all edges equally to keep the balance.
  • Use a single-cut flat file.

RedMax BCZ3050S Commercial Straight Shaft String Trimmer Owner's Manual -
Use a single-cut flat file

****WARNING: Always discard a blade that is damaged. Do not try to make a bent or twisted blade straight and use it again.

To clean and examine the fuel filter

  1. Remove the fuel tank cap (A).RedMax BCZ3050S Commercial Straight Shaft String Trimmer Owner's Manual - Remove the fuel tank cap
  2. Pull out the fuel hose (B) and the fuel filter (C) from the fuel tank.
  3. Examine the fuel hose for cracks and leaks.
  4. Examine the fuel tank cap and fuel filter for blockage.
  5. Clean the fuel filter with a brush. Replace the fuel filter if it cannot be cleaned fully.
  6. Put the fuel filter and fuel hose into the fuel tank.
  7. Install the fuel tank cap.

Bevel gear
The bevel gear is filled with the right quantity of grease at the factory. But, before you use the product, make sure that the bevel gear is 3/4 full with grease. Use RedMax special grease.

RedMax BCZ3050S Commercial Straight Shaft String Trimmer Owner's Manual -
The bevel gear is filled with the right quantity

The grease in the bevel gear does not need to be changed unless repairs are carried out.

Troubleshooting

The engine does not start

RedMax BCZ3050S Commercial Straight Shaft String Trimmer Owner's Manual -
The engine does not start

The engine starts but stops again

RedMax BCZ3050S Commercial Straight Shaft String Trimmer Owner's Manual -
The engine starts but stops again

Transportation, storage and disposal

Transportation and storage

  • Store and transport the product and fuel so that there is no risk that any leakage or fumes comes in contact with sparks or open flames, for example, from electrical machinery, electric motors, electrical relays/switches or boilers.
  • When you store and transport fuel always use approved containers intended for this purpose.
  • When you store the product for long periods the fuel tank must be emptied. Contact your local petrol station to find out where to dispose excess fuel. Drain the tank into the appropriate containers and in a well ventilated area.
  • Ensure that the product is cleaned and that a complete service is carried out before long-term storage.
  • The transport guard must always be fitted to the cutting attachment when the product is transported or in storage.
  • Secure the product during transport.
  • In order to prevent unintentional start of the engine, the spark plug cap must always be removed during long-term storage if the product is not under close supervision and when you perform all service measures.
  • Allow the product to cool before you put in storage.

Disposal

  • Obey the local requirements and applicable regulations.
  • Discard all chemicals, for example engine oil or fuel, at a service center or at an applicable disposal location.
  • Discard the product at an approved disposal location or send it to RedMax for disposal.

Technical data

RedMax BCZ3050S Commercial Straight Shaft String Trimmer Owner's Manual -
Technical data

Accessories

The accessories used in combination with the specified power heads have been evaluated to ANSI B175.3-2013 Grass Trimmers and Brush cutters Safety Requirements.

These combinations have been evaluated by Underwriters Laboratories Inc. (UL) and are consequently UL listed.

RedMax BCZ3050S Commercial Straight Shaft String Trimmer Owner's Manual -
Accessories

The accessories are recommended for use in combination with the specified power heads and have been evaluated to applicable ISO- and EN safety requirement standards by the Swedish Machinery Testing Institute.

**CALIFORNIA, U.S FEDERAL, AND CANADA EXHAUST AND EVAPORATIVE EMISSIONS

CONTROL WARRANTY STATEMENT**

YOUR WARRANTY RIGHTS AND OBLIGATIONS

The California Air Resources Board (CARB), U.S. Environmental Protection Agency (EPA), Environment and Climate Change Canada and Husqvarna Professional Products, Inc. are pleased to explain the exhaust and evaporative emissions (“emissions”) control system warranty on your 2020-2021* small off-road engine. In California, new equipment that use small off-road engines must be designed, built, and equipped to meet State’s stringent anti-smog standards. Husqvarna Professional Products, Inc. must warrant the emissions 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 or equipment leading to the failure of the emissions control system. Your emissions control system may include parts such as the carburettor or fuel injection system, the ignition system, catalytic convertor, fuel tanks, fuel lines (for liquid fuel and fuel vapours), fuel caps, valves, canisters, filters, clamps and other associated components. Also included may be hoses, belts, connectors, and other emission-related assemblies. Where a warrantable condition exists, Husqvarna Professional Products, Inc. will repair your small off-road engine at no cost to you including diagnosis, parts and labor.

MANUFACTURERS WARRANTY COVERAGE
The exhaust and evaporative emissions control system on your small off-road engine is warranted for two years. If any emissions-related part on your small off-road engine is defective, the part will be repaired or replaced by Husqvarna Professional Products, Inc..

OWNERS WARRANTY RESPONSIBILITIES

  • As the small off-road engine owner, you are responsible for performance of the required maintenance listed in your owner’s manual. Husqvarna Professional Products, Inc. recommends that you retain all receipts covering maintenance on your small off-road engine, but Husqvarna Professional Products, Inc. cannot deny warranty coverage 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 however be aware that Husqvarna Professional Products, Inc. may deny you warranty coverage if your small off-road engine or a part has failed due to abuse, neglect, or improper maintenance or unapproved modifications.
  • You are responsible for presenting your small off-road engine to a Husqvarna Professional Products, Inc. authorized servicing dealer as soon as the problem exists. The warranty repairs shall be completed in a reasonable amount of time, not to exceed 30 days. If you have any questions regarding your warranty rights and responsibilities, you should contact Husqvarna Professional Products, Inc. in USA at 1-800-487-5951, in CANADA at 1-800-805-5523 or send e-mail correspondence to [email protected] or [email protected].

WARRANTY COMMENCEMENT DATE

The warranty period begins on the date the engine or equipment is delivered to an ultimate purchaser.

LENGTH OF COVERAGE
Husqvarna Professional Products, Inc. warrants to the ultimate purchaser and each subsequent owner that the engine or equipment is designed, built, and equipped so as to conform with all applicable regulations adopted by CARB and EPA, and is free from defects in materials and workmanship that causes the failure of a warranted part for a period of two years.

WHAT IS COVERED
REPAIR OR REPLACEMENT OF PARTS: Repair or replacement of any defective warranted part will be performed at no charge to you at a brand authorized servicing dealer. Except for repairs and replacement under this Emission Control Warranty, you may choose a repair shop or other person to maintain, replace or repair emission control devices and systems. However, Husqvarna Professional Products, inc. recommends that all maintenance, replacement and repairs of emission control devices and systems be performed by a brand authorized servicing dealer.

IMPORTANT: This product is compliant with U.S. EPA Phase 3 regulations for exhaust and evaporative emissions. To ensure EPA Phase 3, California Air Resources Board and Environment and Climate Change Canada regulation, we recommend using only genuine product branded replacement parts. Use of noncompliant replacement parts is a violation of federal and state laws.

WARRANTY PERIOD: 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” is warranted for 2 years (or time defined in the product warranty statement, whichever is longer) from the date of purchase by the initial consumer purchaser. Any warranted part which is scheduled for replacement as required maintenance is warranted for the period of the time up to the first scheduled replacement for that part. Any part repaired or replaced under the warranty must be warranted for the remaining warranty period.

DIAGNOSIS: You will not be charged for diagnostic labor that leads to the determination that a warranted part is in fact defective, provided that such diagnostic work is performed at a brand authorized servicing dealer.

OTHER DAMAGES: Husqvarna Professional Products, Inc. will repair other engine components caused by the failure of a warranted part still under warranty.

EMISSION WARRANTY PARTS LIST

  1. Carburettor and intake parts or fuel injection system.
  2. Air filter and fuel filter covered up to maintenance schedule.
  3. Spark Plug, covered up to maintenance schedule.
  4. Ignition Module.
  5. Mufflers with catalyst and exhaust manifolds.
  6. Fuel tank, fuel lines (for liquid fuel and fuel vapours), fuel cap, carbon canister and tip-over/anti-slosh valves as applicable.**
  7. Electronic Controls, Vacuum, temperature, and time sensitive valves and switches.
  8. Hoses, connectors, and assemblies.
  9. All other components the failure of which would increase the engine’s exhaust and evaporative emissions of any regulated pollutant as set forth at the following:
  • For California see California Code of Regulations, 13 CCR §2405(d) and 2760(d).
  • For U.S. and Canada see US Federal Code of Regulations, 40 C.F.R 1068 Appendix I (iii).

WHAT IS NOT COVERED
All failures caused by abuse, neglect, unapproved modifications, misuse or improper maintenance are not covered.

ADD -ON OR MODIFIED PARTS: Add-on or modified parts that are not exempted by CARB or EPA may not be used. The use of any non-exempted add-on or modified parts will be grounds for disallowing a warranty claim. Husqvarna Professional Products, inc. will not be liable to warrant failures of warranted parts caused by the use of a non-exempted add-on or modified part.

HOW TO FILE A CLAIM
If you have any questions regarding your warranty rights and responsibilities, you should contact your nearest authorized servicing dealer or call Husqvarna Professional Products, Inc. in USA at 1-800-487-5951, in CANADA at 1-800-805-5523 or send e-mail correspondence to [email protected] or [email protected].

WHERE TO GET WARRANTY SERVICE
Warranty services or repairs are provided through all Husqvarna Professional Products, Inc. authorized servicing dealers. If the nearest authorized servicing dealer is more than 100 miles from your location, Husqvarna Professional Products, Inc. will arrange and pay for the shipping costs to and from a brand authorized servicing dealer or otherwise arrange for warranty service in accordance with applicable regulations.

MAINTENANCE, REPLACEMENT AND REPAIR OF EMISSION-RELATED PARTS
Any replacement part may be used in the performance of any warranty maintenance or repairs and must be provided without charge to the owner. Such use will not reduce the warranty obligations of the manufacturer.

MAINTENANCE STATEMENT
The owner is responsible for the performance of all required maintenance, as defined in the owner’s manual.

  • Current and following model year will be updated annually in the warranty statement provided to the consumer. For example, in 2012 model year, 2012-2013 will be specified.
    ** Evaporative emission parts.

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RedMax BCZ3050S Commercial Straight Shaft String Trimmer Owner's Manual -
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