MAKITA UC4041A (01) PDF MANUAL

MAKITA UC4041A (01) PDF SUMMARY:

What are the specifications for the UC3041A, UC3541A, and UC4041A models of the electric chain saw?

Model	UC3041A	UC3541A	UC4041A
Max. chain speed	14.5 m/s (870 m/min)	14.5 m/s (870 m/min)	14.5 m/s (870 m/min)
Bar length	300 mm	350 mm	400 mm
Cutting length	265 mm	325 mm	360 mm
Guide bar type	Sprocket nose bar Type 90PX / 91PX	Sprocket nose bar Type 90PX / 91PX	Sprocket nose bar Type 90PX / 91PX
Pitch	3/8"	3/8"	3/8"
No. of drive links	46	52	56
Recommended guide bar length	300 – 400 mm	300 – 400 mm	300 – 400 mm
Overall length (without guide bar)	455 mm	455 mm	455 mm
Net weight	4.6 kg	4.7 kg	4.7 kg
Extension cable (optional)	DIN 57282/HO 7RN -F L=30 m max.,3×1.5 mm2	DIN 57282/HO 7RN -F L=30 m max.,3×1.5 mm2	DIN 57282/HO 7RN -F L=30 m max.,3×1.5 mm2

---

What do the symbols used for the equipment mean?

• Read instruction manual and follow the warnings and safety instructions.
• Wear eye protection.
• Wear ear protection.
• DOUBLE INSULATION
• Caution: particular care and attention required!
• Caution: withdraw the mains plug immediately if the cable is damaged!
• Caution: kickback!
• Protect against rain and damp!
• Wear a helmet, goggles and ear protection!
• Wear safety gloves!
• Withdraw the mains plug!
• First aid
• Maximum permissible length of cut
• Direction of chain travel
• Chain oil
• Chain brake released
• Chain brake applied
• Prohibited!
• Only for EU countries

---

What is the intended use of this tool?

The tool is intended for cutting lumbers and logs.

---

What type of power supply should be used with this tool?

The tool should be connected only to a power supply of the same voltage as indicated on the nameplate, and can only be operated on single-phase AC supply. They are double-insulated and can, therefore, also be used from sockets without earth wire.

---

What is the recommended voltage range for public low-voltage distribution systems for this device?

The device is recommended for public low-voltage distribution systems of between 220 V and 250 V.

---

What is the sound pressure level, sound power level, and uncertainty of the noise produced by this tool?

• Sound pressure level (LpA): 90.3 dB (A)
• Sound power level (LWA): 101.3 dB (A)
• Uncertainty (K): 2.5 dB (A)

---

What is the vibration emission and uncertainty when cutting wood with this tool?

• Vibration emission (ah): 4.7 m/s²
• Uncertainty (K): 1.5 m/s²

---

What are the general safety warnings for power tools?

• Keep work area clean and well lit.
• Do not operate power tools in explosive atmospheres.
• Keep children and bystanders away while operating a power tool.
• 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.
• Avoid body contact with earthed or grounded surfaces.
• Do not expose power tools to rain or wet conditions.
• Do not abuse the cord. Keep cord away from heat, oil, sharp edges or moving parts.
• When operating a power tool outdoors, use an extension cord suitable for outdoor use.
• If operating a power tool in a damp location is unavoidable, use a residual current device (RCD) protected supply.
• Use of power supply via a RCD with a rated residual current of 30mA or less is always recommended.
• Stay alert, watch what you are doing and use common sense when operating a power tool. Do not use a power tool while you are tired or under the influence of drugs, alcohol or medication.
• Use personal protective equipment. Always wear eye protection.
• Prevent unintentional starting. Ensure the switch is in the off-position before connecting to power source and/or battery pack, picking up or carrying the tool.
• Remove any adjusting key or wrench before turning the power tool on.
• Do not overreach. Keep proper footing and balance at all times.
• Dress properly. Do not wear loose clothing or jewellery. Keep your hair, clothing, and gloves away from moving parts.
• If devices are provided for the connection of dust extraction and collection facilities, ensure these are connected and properly used.
• Do not force the power tool. Use the correct power tool for your application.
• Do not use the power tool if the switch does not turn it on and off.
• Disconnect the plug from the power source and/or the battery pack from the power tool before making any adjustments, changing accessories, or storing power tools.
• Store idle power tools out of the reach of children and do not allow persons unfamiliar with the power tool or these instructions to operate the power tool.
• Maintain power tools. Check for misalignment or binding of moving parts, breakage of parts and any other condition that may affect the power tool’s operation. If damaged, have the power tool repaired before use.
• Keep cutting tools sharp and clean.
• Use the power tool, accessories and tool bits etc. in accordance with these instructions, taking into account the working conditions and the work to be performed.
• Have your power tool serviced by a qualified repair person using only identical replacement parts.
• Follow instruction for lubricating and changing accessories.
• Keep handles dry, clean and free from oil and grease.

---

What are the safety warnings specific to chain saws?

• Keep all parts of the body away from the saw chain when the chain saw is operating.
• Always hold the chain saw with your right hand on the rear handle and your left hand on the front handle.
• Hold the power tool by insulated gripping surfaces only, because the saw chain may contact hidden wiring or its own cord.
• Wear safety glasses and hearing protection. Further protective equipment for head, hands, legs and feet is recommended.
• Do not operate a chain saw in a tree.
• Always keep proper footing and operate the chain saw only when standing on fixed, secure and level surface.
• When cutting a limb that is under tension be alert for spring back.
• Use extreme caution when cutting brush and saplings.
• Carry the chain saw by the front handle with the chain saw switched off and away from your body.
• Follow instructions for lubricating, chain tensioning and changing accessories.
• Keep handles dry, clean, and free from oil and grease.
• Cut wood only. Do not use chain saw for purposes not intended.
• Causes and operator prevention of kickback: Kickback may occur when the nose or tip of the guide bar touches an object, or when the wood closes in and pinches the saw chain in the cut.
• Maintain a firm grip, with thumbs and fingers encircling the chain saw handles, with both hands on the saw and position your body and arm to allow you to resist kickback forces.
• Do not overreach and do not cut above shoulder height.
• Only use replacement bars and chains specified by the manufacturer.
• Follow the manufacturer’s sharpening and maintenance instructions for the saw chain.

---

What are some additional safety rules for operating a chain saw?

• Read the instruction manual in order to familiarize yourself with operation of the chain saw.
• Before using the chain saw for the first time, arrange to have instruction in its operation.
• The chain saw must not be used by children or young persons under 18 years of age.
• Working with the chain saw requires a high level of concentration. Do not work with the saw if you are not feeling fit and well.
• Never work under the influence of alcohol, drugs or medication.

---

What are the proper uses of the chain saw?

• The chain saw is intended solely for cutting wood.
• Only use the chain saw for operations described in this instruction manual.
• The chain saw must not be used for forestry work, i.e. for felling and limbing standing timber.
• The chain saw is not intended for commercial use.
• Do not overload the chain saw.

---

What personal protective equipment should be worn when operating a chain saw?

• A tested safety helmet, if a hazard is presented by falling branches or similar;
• A face mask or goggles;
• Suitable ear protection (ear muffs, custom or mouldable ear plugs).
• Firm leather safety gloves;
• Long trousers manufactured from strong fabric;
• Protective dungarees of cut-resistant fabric;
• Safety shoes or boots with non-slip soles, steel toes, and cut-resistant fabric lining;
• A breathing mask, when carrying out work which produces dust (e.g. sawing dry wood).

---

What are some safety precautions regarding electrical safety?

• The chain saw must not be used in wet weather or damp environments.
• Only plug the saw into sockets in tested electrical circuits. Check that the system voltage matches that on the rating plate.
• Ensure that a 16 A line fuse is fitted. Saws used in the open air must be connected to a residual current-operated circuit-breaker with an operating current no higher than 30 mA.
• Should the connecting cable be damaged, withdraw the mains plug immediately.

---

What are some safe working practices for using the chain saw?

• Before starting work, check that the chain saw is in proper working order.
• Ensure that the extension cable used is of adequate cross-section.
• Keep the cord away from the cutting area.
• Do not operate the chain saw in the vicinity of flammable dust or gases.
• Work only on firm ground and with a good footing. Do not stand on ladders or trees when using the saw.
• Take particular care when working on sloping ground.
• Never cut above shoulder height.
• Hold the chain saw with both hands when switching it on and using it. Hold the rear handle with your right hand and the front handle with your left.
• Clean the area to be cut of foreign objects.
• Take particular care when cutting in the vicinity of wire fences.
• Do not cut into the ground.
• Cut pieces of wood singly, not in bunches or stacks.
• Avoid using the saw to cut thin branches and roots.
• Use a secure support (trestle) when cutting sawn timber.
• Do not use the chain saw to prise off or brush away pieces of wood and other objects.
• Guide the chain saw such that no part of your body is within the extended path of the saw chain.
• When moving around between sawing operations, apply the chain brake.
• Withdraw the mains plug when taking breaks or leaving the chain saw unattended.

---

What are the causes of kickback and how can it be avoided?

Kickback arises when the tip of the bar comes into contact with wood or another solid object. To avoid kickback:

• Never begin the cut with the tip of the bar.
• Never use the tip of the bar for cutting.
• Start the cut with the chain running.
• Always sharpen the chain correctly.
• Never saw through several branches at a time.
• When limbing, take care to prevent the bar from coming into contact with other branches.
• When bucking, keep clear of adjacent trunks. Always observe the bar tip.
• Use a trestle.

---

What safety features are included with this chain saw?

• Chain brake: brings the saw chain to a standstill within a fraction of a second when the hand guard is pushed forwards.
• Run-down brake: brings the saw chain to an immediate stop when the ON/OFF switch is released.
• Front and rear hand guards protect the user against injury.
• Trigger lockout prevents the chain saw from being switched on accidentally.
• Chain catcher protects the user against injury should the chain jump or break.

---

How should the chain saw be transported and stored?

• When the chain saw is not in use or is being transported, withdraw the mains plug and fit the guide bar cover.
• Carry the chain saw by the front handle only, with the bar pointing backwards.
• Keep the chain saw in a secure, dry and locked room out of the reach of children. Do not store the chain saw outdoors.

---

What maintenance tasks should be performed on the chain saw?

• Withdraw the plug from the socket before carrying out any adjustments or maintenance.
• Check the power cable regularly for damage to the insulation.
• Clean the chain saw regularly.
• Have any damage to the plastic housing repaired properly and immediately.
• Do not use the saw if the switch trigger is not working properly.
• Under no circumstances should any modifications be made to the chain saw.
• Do not carry out maintenance or repair work other than that described in the instruction manual.
• Only use genuine replacement parts and accessories intended for your model of saw.

---

What are some first aid measures to take when operating the chain saw?

• Do not work alone. Always work within shouting distance of a second person.
• Always keep a first-aid box to hand.
• Should you request assistance in the event of an accident, state the following:
  • Where did the accident happen?
  • What happened?
  • How many persons are injured?
  • What injuries do they have?
  • Who is reporting the accident?

---

What are the designated parts of the chain saw?

1. Rear handle
2. Switch trigger
3. Oil filler cap
4. Front handle
5. Front hand guard
6. Guide bar
7. Saw chain
8. Lever
9. Adjusting dial
10. Oil level sight
11. Rear hand guard
12. Lock-off button
13. Chain catcher
14. Guide bar cover
15. Adjusting screw for oil pump (at the bottom)
16. Cord hook
17. Sprocket cover
18. Spike bumper

---

How do you remove the saw chain?

1. Press and fully open the lever until it stops.
2. Turn the lever counterclockwise to loosen the sprocket cover until it comes off.
3. Turn the adjusting dial to “-” direction to release the saw chain tension.
4. Remove the sprocket cover.
5. Remove the saw chain and guide bar from the chain saw.

---

How do you install the saw chain?

1. Make sure the direction of the chain. The arrow mark on the chain shows the direction of the chain.
2. Fit in one end of the saw chain on the top of the guide bar and the other end of it around the sprocket.
3. Rest the guide bar in place on the chain saw.
4. Align the tension slide with the hole of the guide bar.
5. Holding the guide bar, turn the adjusting dial to “+” direction to adjust the saw chain tension.
6. Place the sprocket cover so that the hooks fit alongside the holes and the pin fits its counterpart on the sprocket cover.
7. Turn the lever clockwise to secure the sprocket cover.
8. Press and return the lever to its original position.

---

How do you adjust saw chain tension?

The saw chain may become loose after many hours of use. Check the saw chain tension before use.

1. Press and fully open the lever until it clicks. Turn it counterclockwise a little to loosen the sprocket cover lightly.
2. Lift up the guide bar tip slightly.
3. Turn the adjusting dial to adjust the saw chain tension. Tighten the saw chain until the lower side of the saw chain fits in the guide bar rail.
4. Keep holding the guide bar lightly, tighten the sprocket cover after adjusting the chain tension. Make sure that the saw chain does not lose at the lower side.
5. Press and return the lever to its original position. Make sure the saw chain fits snugly against the lower side of the bar.

---

What are some cautions regarding saw chain tension?

• Do not tighten the saw chain too much. Excessively high tension of the saw chain may cause breakage of the saw chain, wear of the guide bar, and breakage of the adjusting dial.
• A chain that is too loose can jump off the bar and therefore presents an accident risk.
• Carry out the procedure of installing or removing the saw chain in a clean place free from sawdust.

---

How do you engage an extension cord?

When engaging the extension cord, secure it to the chain saw’s cord with the cord hook. Attach the cord hook about 100 – 200 mm from the extension cord connector. This helps prevent unintentional disconnection.

---

What should you check before using the switch trigger?

Always be sure that the tool is switched off and unplugged before checking the function of the switch trigger. Before plugging in the tool, always check to see that the switch trigger actuates properly and returns to the “OFF” position when released.

---

What is the function of the lock-off button and how do you start the tool?

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

---

How should the saw chain and bar be lubricated?

Lubricate the saw chain and bar using biologically degradable saw chain oil with an adhesion agent. The adhesion agent in the saw chain oil prevents the oil from being thrown off the saw excessively quickly. Mineral oils must not be used, as they are harmful to the environment.

---

What are some cautions regarding chain oil?

• Prevent the oil from coming into contact with the skin and eyes. Contact with the eyes causes irritation. In the event of eye contact, flush the affected eye immediately with clear water, then consult a doctor at once.
• Never use waste oil. Waste oil contains carcinogenic substances. The contaminants in waste oil cause accelerated wear of the oil pump, the bar and the chain. Waste oil is harmful to the environment.
• When filling the chain saw with chain oil for the first time, or refilling the tank after it has been completely emptied, add oil up to the bottom edge of the filler neck. The oil delivery may otherwise be impaired.

---

How do you fill the oil?

1. Clean the area around the oil filler cap thoroughly to prevent any dirt from entering the oil tank.
2. Unscrew the oil filler cap and add oil up to the lower edge of the filler neck.
3. Screw the oil filler cap firmly back in place.
4. Wipe away any spilt chain oil carefully.

---

What should you check before starting work?

Before starting work, carry out the following checks:

• Make sure the saw chain fits snugly against the lower side of the bar.
• Check the chain tension frequently, as new chains are subject to elongation.
• Check the switch trigger actuates properly and returns to the “OFF” position when released.
• Check that the chain brake is released.

---

What should you do if the chain is too loose?

If the chain is too loose, refer to the section titled “Adjusting saw chain tension” and adjust the saw chain tension again.

---

How do you check the chain brake?

1. Hold the chain saw with both hands when switching it on. Hold the rear handle with your right hand, the front handle with your left. Make sure that the bar and the chain do not contact any object.
2. First press the lock-off button, then the switch trigger. The saw chain starts immediately.
3. Press the front hand guard forwards using the back of your hand. Make sure that the saw chain comes to an immediate standstill.

---

What should you do if the saw chain does not stop immediately?

If the saw chain does not stop immediately, do not use the saw under any circumstances. Consult Makita authorized service centers.

---

How do you check the run-down brake?

Switch on the chain saw. Release the switch trigger completely. Make sure the saw chain comes to a standstill within a second.

---

How do you check the chain oiler?

Before starting work, check the oil level in the tank, and the oil delivery. The oil level can be seen in the oil level sight.

Check the oil delivery as follows: Start the chain saw. With the saw running, hold the saw chain approximately 15 cm above a tree trunk or the ground. If lubrication is adequate, the oil spray will produce a light oil trace.

---

What should you do if an oil trace is not formed?

If an oil trace is not formed, do not use the saw. The lifespan of the chain will otherwise be reduced. Check the oil level. Clean the oil feed groove and the oil feed hole in the bar.

---

How can you adjust the chain lubrication?

You can adjust the oil pump feed rate with the adjusting screw.

---

What should you do when bucking?

For bucking cuts, rest the spike bumper on the wood to be cut. With the saw chain running, saw into the wood, using the rear handle to raise the saw and the front one to guide it. Use the spike bumper as a pivot. Continue the cut by applying slight pressure to the front handle, easing the saw back slightly. Move the spike bumper further down the timber and raise the front handle again. When making several cuts, switch the chain saw off between cuts.

---

What is an important safety precaution when cutting?

If the upper edge of the bar is used for cutting, the chain saw may be deflected in your direction if the chain becomes trapped. For this reason, cut with the lower edge, so that the saw will be deflected away from your body.

---

How should you cut wood under tension?

Cut wood under tension on the pressure side (A) first. Then make the final cut on the tension side (B). This prevents the bar from becoming trapped.

---

What precautions should you take when limbing?

When limbing, support the chain saw on the trunk if possible. Do not cut with the tip of the bar, as this presents a risk of kickback. Pay particular attention to branches under tension. Do not cut unsupported branches from below. Do not stand on the felled trunk when limbing.

---

What is an important safety precaution for burrowing and parallel-to-grain cuts?

Burrowing and parallel-to-grain cuts may only be carried out by persons with special training. The possibility of kickback presents a risk of injury.

---

What precautions should you take before starting felling work?

Before starting felling work, ensure that:

• Only persons involved in the felling operation are in the vicinity.
• Any person involved has an unhindered path of retreat through a range of approximately 45 ° either side of the felling axis. Consider the additional risk of tripping over electrical cables.
• The base of the trunk is free of foreign objects, roots and ranches.
• No persons or objects are present over a distance of 2 1/2 tree lengths in the direction in which the tree will fall.

---

What should you consider with respect to each tree before felling?

• Direction of lean.
• Loose or dry branches.
• Height of the tree.
• Natural overhang.
• Whether or not the tree is rotten.

---

What should you consider with regard to wind before felling?

Consider the wind speed and direction. Do not carry out felling work if the wind is gusting strongly.

---

How do you trim root swellings?

Begin with the largest swellings. Make the vertical cut first, then the horizontal cut.

---

How do you cut a scarf when felling?

Cut a scarf as close to the ground as possible. First make the horizontal cut to a depth of 1/5 -1/3 of the trunk diameter. Do not make the scarf too large. Then make the diagonal cut. Cut any corrections to the scarf across its entire width.

---

How do you make the back cut when felling?

Make the back cut a little higher than the base cut of the scarf. The back cut must be exactly horizontal. Leave approximately 1/10 of the trunk diameter between the back cut and the scarf. The wood fibers in the uncut trunk portion act as a hinge. Do not cut right through the fibers under any circumstances, as the tree will otherwise fall unchecked. Insert wedges into the back cut in time.

---

What type of wedges should be used when felling?

Only plastic or aluminum wedges may be used to keep the back cut open. The use of iron wedges is prohibited.

---

Where should you stand when the tree is falling?

Stand to the side of the falling tree. Keep an area clear to the rear of the falling tree up to an angle of 45 ° either side of the tree axis. Pay attention to falling branches.

---

What should you do before you start any cuts when felling a tree?

An escape path should be planned and cleared as necessary before cuts are started. The escape path should extend back and diagonally to the rear of the expected line of fall.

---

What should you do before attempting to perform inspection or maintenance?

Always be sure that the tool is switched off and unplugged before attempting to perform inspection or maintenance. Always wear gloves when performing any inspection or maintenance.

---

What should you not use when cleaning the chainsaw?

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

---

What should you do if any parts of the plastic housing are damaged?

If any parts are damaged, have them repaired immediately and properly in Makita authorized service centers.

---

When should you sharpen the saw chain?

Sharpen the saw chain when:

• Mealy sawdust is produced when damp wood is cut.
• The chain penetrates the wood with difficulty, even when heavy pressure is applied.
• The cutting edge is obviously damaged.
• The saw pulls to the left or right in the wood.

---

What are some sharpening criteria for saw chains?

• All cutter lengths must be equal. Cutters of differing length prevent the chain from running smoothly and may cause the chain to break.
• Do not sharpen the chain once a minimum cutter length of 3 mm has been reached. A new chain must then be fitted.
• The chip thickness is determined by the distance between the depth gauge (round nose) and the cutting edge.
• The best cutting results are obtained with the following distance between the cutting edge and depth gauge:
  • Chain blade 90PX: 0.5 mm
  • Chain blade 91PX: 0.65 mm
• The sharpening angle of 30 ° must be the same on all cutters.
• The side plate angle of the cutter is determined by the depth of penetration of the round file.
• Side plate angles for each saw chain:
  • Chain blade 90PX: 75 °
  • Chain blade 91PX: 80 °

---

What kind of file should you use to sharpen the chain?

Use a special round file for saw chains to sharpen the chain. Normal round files are not suitable.

---

What is the diameter of the round file for each saw chain?

• Chain blade 90PX: 4.5 mm
• Chain blade 91PX: 4.0 mm

---

How should you use the file when sharpening the chain?

The file should only engage the cutter on the forward stroke. Lift the file off the cutter on the return stroke.

---

What should you do after sharpening the chain?

After sharpening the chain, check the height of the depth gauge using the chain gauge tool. Remove any projecting material with a special flat file. Round off the front of the depth gauge again.

---

How do you clean the guide bar and lubricate the return sprocket?

Check the running surfaces of the bar regularly for damage. Clean using a suitable tool, and remove burrs if necessary. If the chain saw receives frequent use, lubricate the return sprocket bearing at least once a week. Before adding new fresh grease, carefully clean the 2 mm hole on the tip of the guide bar, then force a small quantity of multi-purpose grease into the hole.

---

How do you clean the oil guide?

Clean the oil guide groove and the oil feed hole in the bar at regular intervals.

---

What should you do when using a new saw chain?

Use two or three saw chains alternately, so that the saw chain, sprocket, and running surfaces of the bar wear evenly. Turn the bar over when changing the chain so that the bar groove wears evenly.

---

What should you check before fitting a new saw chain?

Before fitting a new saw chain, check the condition of the sprocket.

---

What should you do if the sprocket is worn?

A worn sprocket damages a new saw chain. Have the sprocket replaced in this case. Always fit a new locking ring when replacing the sprocket.

---

What should you do before taking the chain saw out of service for a longer period?

Before taking the chain saw out of service for a longer period, empty the oil tank and fill it with a small quantity of engine oil (SAE 30). Run the chain saw briefly to flush all residue of the biological oil out of the tank, lubricating system, and saw mechanism.

---

What are some troubleshooting steps? * If the chain saw does not start, check if the chain brake is engaged, if the power supply is connected, and if the carbon brush is worn down. * If the chain does not run, check if the chain brake is engaged, if the power supply is connected, and if the chain is loose. * If there is insufficient performance, check if the oil tank is empty, if the oil guide groove is dirty, if the oil pump adjusting screw is incorrectly adjusted, and if the guide bar and saw chain tension are loose. * If there is no oil on the chain, check if the oil tank is empty, if the oil guide groove is dirty, and if the oil pump adjusting screw is incorrectly adjusted. * If the chain does not stop even when the chain brake is engaged, the brake band may be worn down. * If the tool vibrates abnormally, there may be a tool malfunction.

---

What are some optional accessories for the chainsaw?

• Saw chain
• Guide bar cover
• Guide bar
• Chain gauge
• Round file 4.0 mm
• Round file 4.5 mm
• Flat file
• File holder with 4.0 mm file
• File holder with 4.5 mm file
• File handle
• Saw chain oil
• Multi-purpose grease
• Grease gun