makita UR3502 Electric Grass Trimmer Instruction Manual

June 2, 2024
Makita

makita UR3502 Electric Grass Trimmer

Explanation of general view

makita-UR3502-Electric-Grass-Trimmer- \(1\)

  1. Cable holder
  2. Power supply cord (the shape may differ from country to country)
  3. Rear handle
  4. Lock-off lever
  5. Switch trigger
  6. Front handle
  7. Hanger (suspension point)
  8. Barrier
  9. Cutting tool guard (protector)
  10. Cutting tool
  11. Shoulder harness
  12. Cushion
  13. Most effective cutting area
  14. Handle
  15. Rubber part
  16. Inner protector
  17. Outer protector
  18. Receive washer
  19. Round bar
  20. Blade
  21. Clamp washer
  22. Cup
  23. Nut
  24. Nylon cutting head
  25. Cord cutter
  26. Cover
  27. Hanger
  28. 80 – 100 mm
  29. Spool

SPECIFICATIONS

makita-UR3502-Electric-Grass-Trimmer- \(21\)

  • Due to our continuing program of research and development, the specifications herein are subject to change without notice.
  • Specifications may differ from country to country.
  • Weight according to EPTA-Procedure 01/2003

Symbols
The following show the symbols used for the equipment. Be sure that you understand their meaning before use.

IMPORTANT SAFETY INSTRUCTIONS

WARNING! Read all safety warnings and all instructions. Failure to follow the warnings and instructions may result in electric shock, fire and/or serious injury.
Save all warnings and instructions for future reference.

  • Intended use
1. The grass trimmer/ brushcutter/ string trimmer is only intended for cutting grass, weeds, bushes and undergrowth. It should not be used for any other purpose such as edging or hedge cutting as this may cause injury.
  • General instructions
1. Never allow people unfamiliar with these instructions, people (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge to use the tool. Children should be supervised to ensure that they do not play with the tool.
2. Before starting the tool, read this instruction manual to become familiar with the handling of the tool.
3. Do not lend the tool to a person with insufficient experience or knowledge regarding handling of brushcutters and string trimmers.
4. When lending the tool, always attach this instruction manual.
5. Handle the tool with the utmost care and attention.
6. Never use the tool after consuming alcohol or drugs, or if feeling tired or ill.
7. Never attempt to modify the tool.
8. Take care against injury from any device fitted for trimming the filament line length. After extending new cutter line always return the machine to its normal operating position before switching on.
9. Follow the regulations about handling of brushcutters and string trimmers in your country.
  • Personal protective equipment
1. Wear safety helmet, protective goggles and protective gloves to protect yourself from flying debris or falling objects.
2. Wear ear protection such as ear muffs to prevent hearing loss.
3. Wear proper clothing and shoes for safe operation, such as a work overall and sturdy, non-slip shoes. Do not wear loose clothing or jewelry. Loose clothes, jewelry or long hair can be caught in moving parts.
4. When touching the cutting blade, wear protective gloves. Cutting blades can cut bare hands severely.
  • Work area safety
1. Operate the tool under good visibility and daylight conditions only. Do not operate the tool in darkness or fog.
2. Do not operate the tool in explosive atmospheres, such as in the presence of flammable liquids, gases or dust. The tool creates sparks which may ignite the dust or fumes.
3. During operation, never stand on an unstable or slippery surface or a steep slope. During the cold season, beware of ice and snow and always ensure secure footing.
4. During operation, keep bystanders or animals at least 15 m away from the tool. Stop the tool as soon as someone approaches.
5. Before operation, examine the work area for stones or other solid objects. They can be thrown or cause dangerous kickback and result in serious injury and/ or property damage.
6.  **WARNING:** Use of this product can create dust containing chemicals which may cause respiratory or other illnesses. Some examples of these chemicals are compounds found in pesticides, insecticides, fertilizers and herbicides. Your risk from these exposures varies, depending on how often you do this type of work. To reduce your exposure to these chemicals: work in a well ventilated area, and work with approved safety equipment, such as those dust masks that are specially designed to filter out microscopic particles.
  • Electrical safety
1. Power tool plugs must match the outlet. Never modify the plug in any way. Do not use any adapter plugs with earthed (grounded) power tools. Unmodified plugs and matching outlets will reduce risk of electric shock.
2. Avoid body contact with earthed or grounded surfaces such as pipes, radiators, ranges and refrigerators. There is an increased risk of electric shock if your body is earthed or grounded.
3. Do not expose the tool to rain or wet conditions. Water entering the tool will increase the risk of electric shock.
4. Do not abuse the cord. Never use the cord for carrying, pulling or unplugging the power tool. Keep cord away from heat, oil, sharp edges or moving parts. Damaged or entangled cords increase the risk of electric shock.
5. Do not use the tool if the switch does not turn it on and off. Any tool that cannot be controlled with the switch is dangerous and must be repaired.
6. When operating a power tool outdoors, use an extension cord suitable for outdoor use. Use of a cord suitable for outdoor use reduces the risk of electric shock.
7. If operating a power tool in a damp location is unavoidable, use a residual current device (RCD) protected supply. Use of an RCD reduces the risk of electric shock.
8. Use of power supply via a RCD with a rated residual current of 30 mA or less is always recommended.
9. Prevent unintentional starting. Ensure the switch is in the off-position before connecting to power source, picking up or carrying the tool. Carrying power tools with your finger on the switch or energising power tools that have the switch on invites accidents. Before use, check the supply and extension cord for signs of damage or ageing.
10. If the cord becomes damaged during use, disconnect the cord from the supply immediately. Do not touch the cord before disconnecting the supply.
11. Do not use the tool if the cords are damaged or worn.
12. Keep extension cord away from cutting elements.
  • Putting into operation
1. Before assembling or adjusting the tool, disconnect the plug from the power source.
2. Before handling the cutter blade, wear protective gloves.
3. Before plugging in, inspect the tool for damages, loose screws/nuts or improper assembly. Sharpen blunt cutter blade. If the cutter blade is bent or damaged, replace it. Check all control levers and switches for easy action. Clean and dry the handles.
4. Never attempt to switch on the tool if it is damaged or not fully assembled. Otherwise serious injury may result.
5. Remove any adjusting key or wrench before turning the tool on. A wrench or a key left attached to a rotating part of the tool may result in personal injury.
6. Adjust the shoulder harness and hand grip to suit the operator’s body size.
7. When plugging in, keep the cutting attachment clear of your body and other object, including the ground. It may rotate when starting and may cause injury or damage to the tool and/or property.
  • Operation
1. In the event of an emergency, switch off the tool immediately.
2. If you feel any unusual condition (e.g. noise, vibration) during operation, switch off the tool. Do not use the tool until the cause is recognized and solved.
3. Warning. The cutting attachment continues to rotate for a short period after turning the tool off. Don’t rush to contact the cutting attachment.
4. During operation, use the shoulder harness. Keep the tool on your right side firmly.
5. Do not overreach. Keep proper footing and balance at all times. Watch for hidden obstacles such as tree stumps, roots and ditches to avoid stumbling.
6. Never work on a ladder or tree to avoid loss of control.
7. Before using the machine and after any heavy impact or fall, check the condition before continuing work. Check the controls and safety devices for malfunction. If there is any damage or doubt, ask our authorized service center for the inspection and repair.
8. Do not touch the gear case. The gear case becomes hot during operation.
9. Take a rest to prevent loss of control caused by fatigue. We recommend taking a 10 to 20-minute rest every hour.
10. When you leave the tool, even if it is a short time, always withdraw the mains plug. The unattended tool with the mains plugged in may be used by unauthorized person and cause serious accident.
11. If grass or branches get caught between the cutting attachment and guard, always turn the tool off and withdraw the mains plug before cleaning. Otherwise the cutting attachment may rotate unintentionally and cause serious injury.
12. If the cutting attachment hits stones or other hard objects, immediately turn the tool off. Then withdraw the mains plug and inspect the cutting attachment.
13. Check the cutting attachment frequently during operation for cracks or damages. Before the inspection, withdraw the mains plug and wait until the cutting attachment stops completely. Replace damaged cutting attachment immediately, even if it has only superficial cracks.
14. Never cut above waist height.
15. Before starting the cutting operation, wait until the cutting attachment reaches a constant speed after turning the tool on.
16. When using metal blades, swing the tool evenly in half-circle from right to left, like using a scythe.
17. Hold the tool by insulated gripping surfaces only, because the cutter blade may contact hidden wiring. Cutter blades contacting a “live” wire may make exposed metal parts of the tool “live” and could give the operator an electric shock.
18. Always ensure that ventilation openings are kept clear of debris.
  • Cutting attachments
1. Use an applicable cutting attachment for the job in hand.
  * Nylon cutting heads (string trimmer heads) are suitable for trimming lawn grass.
  * Metal blades are suitable for cutting weeds, high grasses, bushes, shrubs, underwood, thicket, and the like.
  * Never use other blades including metal multipiece pivoting chains and flail blades. It may result in serious injury.
2. Always use the cutting attachment guard properly suited for the cutting attachment used.
3. Never fit metal cutting elements with nylon cutting models.
4. When using metal blades, avoid “kickback” and always prepare for an accidental kickback. See the section “Kickback.”
  • Kickback (Blade thrust)
1. Kickback (blade thrust) is a sudden reaction to a caught or bound cutting blade. Once it occurs, the tool is thrown sideway or toward the operator at great force and it may cause serious injury.
2. Kickback occurs particularly when applying the blade segment between 12 and 2 o’clock to solids, bushes and trees with 3 cm or larger diameter.
3. To avoid kickback:
  * Apply the segment between 8 and 11 o’clock.
  * Never apply the segment between 12 and 2 o’clock.
  * Never apply the segment between 11 and 12 o’clock and between 2 and 5 o’clock, unless the operator is well trained and experienced and does it at his/her own risk.
  * Never use cutting blades close to solids, such as fences, walls, tree trunks and stones.
  * Never use cutting blades vertically, for such operations as edging and trimming hedges.
  • Vibration
1. People with poor circulation who are exposed to excessive vibration may experience injury to blood vessels or the nervous system. Vibration may cause the following symptoms to occur in the fingers, hands or wrists: “Falling asleep” (numbness), tingling, pain, stabbing sensation, alteration of skin color or of the skin. If any of these symptoms occur, see a physician!
2. To reduce the risk of “white finger disease”, keep your hands warm during operation and well maintain the tool and accessories.
  • Transport
1. Before transporting the tool, turn it off and withdraw the mains plug. Attach the cover to the cutting blade.
2. When transporting the tool, carry it in a horizontal position by holding the shaft.
3. When transporting the tool in a vehicle, properly secure it to avoid turnover. Otherwise damage to the tool and other baggage may result.
  • Maintenance
1. Have your tool serviced by our authorized service center, always using only genuine replacement parts. Incorrect repair and poor maintenance can shorten the life of the tool and increase the risk of accidents.
2. Before doing any maintenance or repair work or cleaning the tool, always turn it off and withdraw the mains plug.
3. Always wear protective gloves when handling the cutting blade.
4. Always clean dust and dirt off the tool. Never use gasoline, benzine, thinner, alcohol or the like for the purpose. Discoloration, deformation or cracks of the plastic components may result.
5. After each use, tighten all screws and nuts.
6. Do not attempt any maintenance or repair not described in the instruction manual. Ask our authorized service center for such work.
7. Always use our genuine spare parts and accessories only. Using parts or accessories supplied by a third party may result in the tool breakdown, property damage and/or serious injury.
8. Request our authorized service center to inspect and maintain the tool at regular interval.
  • Storage
1. Before storing the tool, perform full cleaning and maintenance. Withdraw the mains plug. Attach the cover to the cutting blade.
2. Store the tool in a dry and high or locked location out of reach of children.
3. Do not prop the tool against something, such as a wall. Otherwise it may fall suddenly and cause an injury.
  • First aid
1. Always have a first-aid kit close by. Immediately replace any item taken from the first aid kit.  

When asking for help, give the following information:

  * Place of the accident
  * What happened
  * Number of injured persons
  * Nature of the injury
  * Your name

SAVE THESE INSTRUCTIONS.
WARNING: DO NOT let comfort or familiarity with product (gained from repeated use) replace strict adherence to safety rules for the subject product. MISUSE or failure to follow the safety rules stated in this instruction manual may cause serious personal injury.

PARTS DESCRIPTION

makita-UR3502-Electric-Grass-Trimmer- \(1\)

FUNCTIONAL DESCRIPTION

WARNING:

  • Always be sure that the tool is switched off and unplugged before adjusting or checking the functions on the tool. Failure to switch off and unplug may result in serious personal injury from accidental start-up.

Power switch action (Fig. 2)
WARNING:

  • Before plugging in, always check to see that the switch trigger actuates properly and returns to the “OFF” position when released. Do not pull the switch trigger hard without sliding the lock-off lever. This can cause switch breakage. Operating a tool with a switch that does not actuate properly can lead to loss of control and serious personal injury.

To prevent the switch trigger from being accidentally pulled, a lock-off lever is provided. To start the tool, slide the lock-off lever forward and then pull the switch trigger. Release the switch trigger to stop.

Nylon cutting head (Fig. 3)
NOTICE:

  • Do not attempt to bump feed the head while the tool is operating at a high RPM. Bump feeding at a high RPM may cause damage to the nylon cutting head.
  • The bump feed will not operate properly if the head is not rotating.

NOTE:

  • Standard accessory varies depending on the model and country. The nylon cutting head is a dual grass trimmer head provided with a bump & feed mechanism. To feed out the nylon cord, bump the cutting head against the ground while the cutting head is rotating.

NOTE:

  • If the nylon cord does not feed out while bumping the head, rewind/replace the nylon cord by following the procedures described under “Maintenance.”

Cable holder (Fig. 4)
Make a small loop of power cable, and hang it onto the cable holder.

ASSEMBLY

WARNING:

  • Always be sure that the tool is switched off and unplugged before carrying out any work on the tool. Failure to switch off and unplug may result in serious personal injury from accidental start-up.
  • Never start the tool unless it is completely assembled. Operation of the tool in a partially assembled state may result in serious personal injury from accidental start-up.

Installing the handle (Fig. 5)
WARNING:

  • Do not remove or shrink the spacer or cushion. The spacer keeps a certain distance between both hands. Setting the grip/barrier assembly close to the other grip beyond the length of the spacer may cause loss of control and serious personal injury.

Fit the handle and the barrier onto the rubber part on the shaft pipe. Adjust the location of the handle, and then tighten them with four bolts.

Approved combination of cutting tool and protector

WARNING:

  • Always use the tool with the approved combination of the safety equipments. Otherwise contact with a cutting tool may cause serious injury.
  • Never use the tool without the guard illustrated in place. Failure to do so can cause serious personal injury.

NOTE:

  • Standard accessory varies depending on the model and country.
  • For cutter blade (Fig. 6)
  • For nylon cutting head (Fig. 7)

Installing the protector for cutter blade (Fig. 8)

  1. Align the holes on the inner protector and the holes of the gear case.
  2. Then tighten them with three bolts.

Installing the protector for nylon head
CAUTION:

  • Take care not to injure yourself on the cutter for cutting the nylon cord.
  • Do not forget to remove the cutter protector before using.
  1. Align the four bolts on the outer protector along the holes on the inner protector. (Fig. 9)
  2. Tighten them with the four bolts.
  3. Align the holes on the inner protector and the holes of the gear case.
  4. Tighten them with bolts. (Fig. 10)

Installing the cutter blade

WARNING:

  • The outside diameter of the cutter blade must be 230 mm. Never use any blade exceeding 230 mm in outside diameter.

CAUTION:

  • The cutter blade must be well polished, free of cracks or breakage. Polish or replace the cutter blade every three hours of operation.
  • Always wear gloves when handling the cutter blade.
  • Always attach the blade cover when the tool is not in use or is being transported.
  • The cutter blade-fastening nut wears out in course of time. If there appears any wear or deformation on, replace the nut. Ask your local authorized service center to order it.

NOTICE:

  • Be sure to use genuine cutter blade.
    Turn the tool upside down so that you can replace the cutter blade easily. (Fig. 11)
  1. Fit the receive washer on the axis.
  2. Turn the receive washer until the notch on the receive washer comes on the notch of the gear case.
  3. Insert the round bar through both notches so that receive washer can not be turned.
  4. Put the blade on the receive washer.
  5. Put the clamp washer on the blade.
  6. Put the cup on the plate.
  7. Tighten them with the nut by turning it counterclockwise while holding the round bar.

To remove the blade, perform the above steps in reverse.

Installing nylon cutting head (Fig. 12)
NOTICE:

  • Be sure to use genuine nylon cutting head.

Turn the tool upside down so that you can replace the nylon cutting head easily.

NOTE:
Remove the cover on the cord cutter before use.

  1. Fit the receive washer on the axis.
  2. Turn the receive washer until the notch on the receive washer comes on the notch of the gear case.
  3. Insert the round bar through both notches so that receive washer can not be turned.
  4. Fit the nylon cutting head by turning it counterclockwise.
  5. Remove the round bar after installing the nylon cutting head.

To remove the nylon head, perform the above steps in revere.

OPERATION

Correct handling of tool (Fig. 13)
Correct posture

WARNING:

  • Always position the tool on your right-hand side so that the barrier is always in front of your body. Correct positioning of the tool allows for maximum control and will reduce the risk of serious personal injury caused by kickback.

CAUTION:

  • If during operation the cutting tool accidentally impacts a rock or hard object, stop the tool and inspect for any damage. If the cutting tool is damaged, replace it immediately. Use of a damaged cutting tool could result in serious personal injury.

Put the shoulder harness on your left shoulder by putting your head and right arm through it and keep the tool on your right side while always keeping the barrier in front of your body.

Attachment of shoulder harness (Fig. 14)
Adjust the harness length so that the cutting tool is kept parallel with the ground. Connect the hanger and the harness.

WARNING:

  • Be extremely careful to maintain control of the tool at all times. Do not allow the tool to be deflected toward you or anyone in the work vicinity. Failure to keep control of the tool could result in serious injury to the bystander and the operator.

Adjustment of the hanger position and shoulder harness (Fig. 15)
Adjust the hanger position as illustrated. (Fig. 16)
To change the hanger position, loosen the bolt on the hanger. Then move the hanger. After adjusting the hanger position, tighten the bolt with the wrench securely.

MAINTENANCE

WARNING:

  • Always be sure that the tool is switched off and unplugged before attempting to perform inspection or maintenance on the tool. Failure to switch off and unplug may result in serious personal injury from accidental start-up.

NOTICE:

  • Never use gasoline, benzine, thinner, alcohol or the like. Discoloration, deformation or cracks may result.

Replacing the nylon cord (Fig. 17)
WARNING:

  • Make sure that the nylon cutting head is secured to the tool properly before operation. Failure to properly secure the nylon cutting head may cause it to fly apart resulting in serious personal injury.
  1. Remove the nylon cutting head.
  2. Take off the cover, pressing two latches which are slotted section oppositely on side of the cup.
  3. Remove the spool. And remove the old nylon cord from the spool.
  4. Cut a nylon line in 3 – 6 m. Fold the cutting line in two halves, leave one of half longer 80 – 100 mm than another. (Fig. 18)
  5. Hook the middle of the new nylon cord to the notch located at the center of the spool between the two channels provided for the nylon cord. (Fig. 19)
  6. Wind both ends firmly along the channels in the direction indicated by arrow mark on the spool. (Fig. 20)
  7. Put the nylon cords through the eyelets to come out of the cup.
  8. Align the protrusion on the underside of the cover with the slots of the eyelets. Then push the cover firmly onto the cup to secure it. Make sure the latches fully spread in the cover.

To maintain product SAFETY and RELIABILITY, repairs, any other maintenance or adjustment should be performed by Makita Authorized Service Centers, always using Makita replacement parts.

TROUBLE SHOOTING

Before asking for repairs, conduct your own inspection first. If you find a problem that is not explained in the manual, do not attempt to dismantle the tool. Instead, ask Makita Authorized Service Centers, always using Makita replacement parts for repairs.

Malfunction status Cause Action
Motor does not run. Power mains is not plugged in. Plug in the mains.
Power cable broken. Ask your local authorized service center for repair.

The drive system does not work correctly.
Motor stops running after a little use.| Overheating.| Stop using of tool to allow it to cool down.
It does not reach maximum RPM.| The drive system does not work correctly.| Ask your local authorized service center for repair.
Cutting tool does not rotate: stop the machine immediately!| Foreign object such as a branch is jammed between the guard and the cutting tool.| Remove the foreign object.
Cutter blade fastening nut is loose.| Tighten the nut properly as described in this manual.
The cutter blade is bended.| Replace the cutter blade.
The drive system does not work correctly.| Ask your local authorized service center for repair.
Abnormal vibration: stop the machine immediately!| One end of the nylon cord has been broken.| Bump the nylon cutting head against the ground while it is rotating to cause the cord to feed.
The cutter blade is bended, cracked or worn.| Replace the cutter blade.
Cutter blade fastening nut is loose.| Tighten the nut properly as described in this manual.
Cutter blade is fastened improperly.
The drive system does not work correctly.| Ask your local authorized service center for repair.
Cutting tool and motor cannot stop: Disconnect the mains plug immediately!| Electric or electronic malfunction.| Disconnect the mains plug and ask your local authorized service center for repair.

OPTIONAL ACCESSORIES

CAUTION:

  • These accessories or attachments are recommended for use with your Makita tool specified in this manual. The use of any other accessories or attachments might present a risk of injury to persons. Only use accessory or attachment for its stated purpose.

If you need any assistance for more details regarding these accessories, ask your local Makita Service Center.

  • Cutter blade
  • Nylon cutting head
  • Nylon cord (cutting line)
  • Shoulder harness

NOTE:

  • Some items in the list may be included in the tool package as standard accessories. They may differ from country to country.

Makita Jan-Baptist Vinkstraat 2, 3070, Belgium
Makita Corporation Anjo, Aichi, Japan
www.makita.com

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