NAKAYAMA PRO PC3100 All Type of Works Gasoline Chainsaw User Manual

June 3, 2024
NAKAYAMA PRO

All Type of Works Gasoline Chainsaw

Art Nr: PC3100 029052
User Manual

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Description of main parts

  1. Rear handle
  2. Throttle interlock
  3. Throttle trigger
  4. Ignition switch
  5. Front hand guard (Chain brake lever)
  6. Saw chain
  7. Guide bar
  8. Sprocket wheel
  9. Spiked bumper
  10. Retaining nut
  11. Bolt
  12. Oiling port
  13. Chain catcher
  14. Drive sprocket
  15. Clutch
  16. Tension screw  a. Tension pin
  17. Cover
  18. Air vents
  19. Choke knob
  20. Air filter cover   a. Fixation screw
  21. Air filter
  22. Attachment point
  23. Spark plug connector
  24. Recoil starter handle
  25. Adjustment screw
  26. Chain oil tank cap
  27. Fuel tank cap
  28. Primer
  29. Front handle
  30. Guide bar cover
  31. Multitool
  32. Chain file
  33. Slot head screwdriver
  34. Fuel mixing container
  35. Ignition switch
  36. Throttle interlock
  37. Choke knob
  38. Throttle trigger
  39. Oiler and adjustment screw for lubrication

Safety Precautions

Before using the machine

  • The manufacturer reserves the right to make minor changes to product design and technical specifications without prior notice unless these changes significantly affect the performance and safety of the products. The parts described / illustrated in the pages of the manual that you hold in your hands may also concern other models of the manufacturer’s product line with similar features and may not be included in the product you just acquired.

  • Please note that our equipment has not been designed for use in commercial, trade or industrial applications. Our warranty will be voided if the machine is used in commercial, trade or industrial businesses or for equivalent purposes.  

  • To ensure the safety and reliability of the product and the warranty validity, all repair, inspection, repair or replacement work, including maintenance and special adjustments, must only be carried out by technicians of the authorized service department of the manufacturer.

Technical Data


Model:

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PC3100

|

PC3500

|

PC3530

Displacement:

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25.4 cc

|

25.4 cc

|

25.4 cc

Bar Length:

|

25cm

|

25cm

|

25,4cm

Chain Type:

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3/8”, 1,3mm

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3/8″LP, 1,3mm

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1/4″LP, 1,3mm

a. Read this owner’s manual carefully to understand how to operate this unit properly.

b. You should never use the product when under the influence of alcohol, when suffering from exhaustion or lack of sleep ,when suffering from drowsiness as a result of having taken cold medicine ,or at any other time when a possibility exists that your judgment might be impaired or that you might not be able  to operate the machine properly and in a safe manner .

c. Avoid running the engine indoors .The exhaust gases contain harmful carbon monoxide.

d. Never use the product under circumstances like those described below :

1. When the ground is slippery or when other conditions exist which might make it not possible to maintain a steady posture.

2. At night ,at times of heavy fog ,or at any other times when you field of vision might be limited and it would be difficult to gain a clear view of the area. 3. During rain storms ,during lightning storms ,at times of strong or gale-force winds ,or at any other times when weather conditions might make it unsafe to  use this product.

e. When using this product for the first time ,before beginning actual work ,learn to handling it from skilled worker .

f. Lack of sleep ,tiredness, or physical exhaustion results in lower attention spans ,and this in turn leads to accidents and injury. Limit the amount of time of  using the machine continuously to somewhere around 10 minutes per session ,and take 10-20 minutes of rest between work sessions . Also try to keep the  total amount of work performed in a single day under 2 hours or less.

g. Be sure to keep this manual handy so that you may refer to it later whenever any questions arise .

h. Always be sure to include this manual when selling ,lending ,or otherwise transferring the ownership of this product . i. Never allow children or anyone unable to fully understand the directions given in this manual to use this product.

Working Gear And Clothing

a. When using the product, you should wear proper clothing and protective equipment:

Helmet
Protection goggles or face protector
Thick work gloves
Non-slip sole work boots
Ear protectors

b. And you should carry with you:

  1. Attached tools and files .
  2. Properly reserved fuel and chain oil .
  3. Things to notify your working area (Rope ,Warning signs)
  4. Whistle (for collaboration or emergency)
  5. Hatchet or saw (for removal of obstacles)

c. Never use the product when wearing pants with loose cuffs, when wearing sandals, or when barefoot.

Warnings considering handling of fuel

a. The engine of this product is designed to run on a mixed fuel which contains highly flammable gasoline. Never store cans of fuel or refill the fuel tank in  any place where there is a boiler, stove, wood fire, electrical sparks, welding sparks, or any other source of heat or fire which might ignite the fuel. b. Smoking while operating the product or refilling its fuel tank is extremely dangerous. Always be sure to keep lit cigarettes away from the product at all  times.

c. When refilling the tank always turn off the engine first and take a careful look around to make sure that there are no sparks or open flames anywhere nearby before refueling.

d. If any fuel spillage occurs during refueling, use a dry rag to wipe up spills before turning the engine back on again.

e. After refueling, screw the fuel cap back tightly onto the fuel tank and then carry the product to a spot 3m or more away from where it was refueled before turning on the engine.

Before Starting Engine

Check working place, the cutting object and cutting direction. if there is obstacle, remove it. Never start cutting until you have a clear work area, secure foot ing and a planned retreat path from the falling tree.

Use caution and keep bystanders and animals out of the working area whose diameter is 2.5 times of cutting object.

Inspect the machine for worn, loose, or damaged parts. Never operate the machine that is damaged, improperly adjusted, or is not completely and securely  assembled. Make sure that the saw chain stops moving when the throttle control trigger is released.

When starting the engine

Always hold the machine firmly with both hands when the engine is running. Use a firm grip with thumb and fingers encircling the handles. Keep all parts of your body away from the machine when the engine is running.

Before starting the engine ,make sure the saw chain is not contacting anything.

Additional warnings

Keep the handles dry, clean and free of oil or fuel mixture.

Never touch the muffler, spark plug or other metallic parts of the engine while the engine is in operation or immediately after stopping the engine. Doing so  could result in serious burns or electrical shock.

Use extreme caution when cutting small size brush and saplings because slender material may catch the saw chain and be whipped toward you or pull you off balance.

When cutting a limb that is under tension, be alert for spring back so that you will not be struck when the tension in the wood fibres is released. Check the tree for dead branches that could fall during the felling operation.

Always turn off the engine before setting it down .

Kickback safety precautions for chain saw users

Warning: 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. Tip contact in some cases may cause a lighting fast reverse reaction, kicking the guide bar up and back towards the operator. Pinching the saw chain along the top of the guide bar may push the guide bar rapidly back towards the operator. Either of these reactions may cause you to lose control of the saw which could result in serious personal injury.

Do not rely exclusively on the safety devices built into your saw. As a chain saw user you should take several steps to keep cutting jobs free from accident or  injury.

(1) With a basic understanding of kickback you can reduce or eliminate the element of surprise. Sudden surprise contributes to accidents. (2) Keep a good grip on the saw with both hands, the right hand on the rear handle, and the left hand on the front handle, when the engine is running. Use a  firm grip with thumbs and fingers encircling the chain saw handles. A firm grip will help you reduce kickback and maintain control of the saw. (3) Make certain that the area in which you are cutting is free from obstructions. Do not let the nose of the guide bar contact a log, branch, or any other  obstruction which could be hit while you are operating the saw.

(4) Cut a high engine speeds.

(5) Do not overreach or cut above shoulder height.

(6) Follow manufacturers sharpening and maintenance instructions for saw chain.

(7) Only use replacement bar and chains specified by the manufacturer or the equivalent.

Maintenance

In order to maintain your product in proper working order ,perform the maintenance and checking operations described in the manual at regular intervals. Always be sure to turn off the engine before performing any maintenance or checking procedures.

Warning: The metallic parts reach high temperatures immediately after stopping the engine.

Leave all maintenance other than the items listed in the owner’s manual to your competent servicing dealer.

Transportation

Always carry the unit with the engine stopped, the guide bar covered with the protector to the rare, and muffler away from you body.

Assembly and main adjustments

WARNING! The product must be fully assembled before operation! Do not use a product that is only partly assembled or assembled with damaged parts! Follow the assembly instructions step-by-step and use the pictures provided as a visual guide to easily assemble the product  Disconnect the spark plug connector (23) from the spark plug!

Always wear gloves during assembly!

Assemble the guide bar (7) and saw chain (6) before operation.

Chain and guide bar

Use only guide bar (7) and saw chain (6) according to the technical data of the product.

WARNING! Always use a saw chain designed as “low-kickback” or a saw chain which meets the low-kickback requirements! A standard saw chain (a chain which does not have the kickback reducing guard links) should only be used by an experienced professional operator!

Nevertheless, a low-kickback saw chain does not completely eliminated kickback! A low-kickback or “safety” chain should never be regarded as complete  protection against injury! Therefore always use a low-kickback saw chain in conjunction with other kickback protection devices such as the front hand guard! 1. Place the product on a suitable flat surface with the rear handle (1) facing upward.

WARNING! Before removing the cover (17), ensure the chain brake is disengaged. If in the engaged position, pull the front hand guard (5) backwards until it  ‘clicks’ into position, see section “Product functions – Chain brake”.

2. Loosen the retaining nut (10) with the multitool (31) and remove it together with the cover (17).

3. Ensure the spiked bumper is properly fixed to the product. Tighten the screws as necessary.

4. Place the slot in the guide bar (7) over the bolt (11). Ensure to fit the guide bar (7) with the saw chain ‘cutter’ symbol at the top of the bar (Fig. 1).

5. Push the guide bar (7) to the left towards the drive sprocket (14) (behind the clutch (15) (Fig. 2).

WARNING! The direction of the saw chain ‘cutters’ must be as indicated by the symbol and arrow on the guide bar!

6. Place the saw chain (6) over the drive sprocket (14) behind the clutch (15) and fit around the guide bar (7). Make sure the chain is placed above the chain  catcher (13) (Fig. 3).

7. The saw chain movement is as indicated by the arrow (Fig. 4). Make sure the chain is properly placed over the sprocket wheel (8) of the guide bar (7).

8. Pull the guide bar (7) carefully towards the right to tighten the saw chain (6) (Fig. 5).

9. Refit the cover (17). If necessary adjust the tension pin (16a) by turning the tension screw (16) with the multitool (31) in or out until it reaches a position  where the pin can be inserted into the lower hole on the guide bar (7) (Fig. 6).

10. Secure the cover with the retaining nut (10)(Fig. 7).

NOTE: Fix the nut finger tight only at this stage. The chain tension cannot be adjusted with the retaining nut tightened – it must be loosened first. NOTE: The saw chain (6) has not yet been tensioned. Tension the chain as described under “Saw chain tensioning”. After operating the product for approximately one hour, adjust the chain tension again.

Saw chain tensioning

Always check the saw chain tension before use, after the first cuts and regularly during use, approx. every five cuts. Upon initial operation, new chains can  lengthen considerably. This is normal during the break-in period and the interval between future adjustments will lengthen quickly.

WARNING! Disconnect the spark plug connector before adjusting saw chain tension!

The cutting edges of the saw chain are sharp! Always wear protective gloves when handling chain!

Always maintain proper chain tension! A loose chain increases the risk of kickback! A loose chain may jump out of the guide bar groove! This may injure the  operator and damage the chain! A loose chain will cause rapid wear to the chain, guide bar and sprocket!

Tensioning the chain too tightly will overload the motor and cause damage, and insufficient tension can cause chain derailing, whereas a correctly tightened chain provides the best cutting characteristics and prolonged working life! The chain life mainly depends upon sufficient lubrication and correct tensioning!

NOTE: The chain tension can not be adjusted with the retaining nut tightened – they must be loosened first.

1. Lift up the tip of the guide bar (7) and keep it there as you adjust the tension (Fig. 8).

2. Turn the tension screw (16) until the chain ‘tie straps’ are just touching the bottom edge of the guide bar (7) (Fig. 9, 10).

3. Lift up the tip of the guide bar (7) and tighten the retaining nut (10).

4. Pull the saw chain (6) along the top of the guide bar (7) by hand from one end to the other, several times. The chain should feel tight but still move freely. Tension test

1. Check the chain tension using one hand to lift the saw chain (6) against the weight of the product. The correct chain tension is achieved when the saw chain can be lifted by approximately 2 – 4 mm from the guide bar (7) in the centre (Fig.  11, 12).

2. Adjust the tension if you find that the chain saw is too loose or tight.

Chain lubrication

WARNING! The product is not filled with chain oil. It is essential to fill the product with chain oil before using it! Never operate the product without chain oil  as this will result in extensive damage to the product!

Operating the saw chain dry or with too little chain oil will decrease cutting efficiency, shorten the product life span and cause rapid wear to the saw chain  and guide bar from overheating!

Insufficient chain oil is evident by smoke or bar discoloration! Adequate lubrication of the saw chain during cutting operations is essential to minimize  friction with the guide bar!

1. Place the product on a stable, level surface with the oil tank cap (26) facing upward. We recommend laying a non-flammable sheet under the product.

2. Unscrew and remove the oil tank cap (26) (Fig. 13).

3. Fill suitable lubricant into the tank using an oil funnel fitted with a filter to avoid debris entering the tank. Do not overfill and leave approximately 5 mm of  space between the top of the oil and the inside edge of the tank to allow for expansion (Fig. 14)

NOTE: Use a special type chainsaw chain lubricant all year round.

NOTE: Towards the end of the season, it is advisable to put only as much lubricant in the tank as you need for each cut, so that it is completely used up  before you store the product.

4. Wipe up spilled lubricant with a soft cloth and refit the oil tank cap (26). Use the multitool (31) to tighten the cap (26) properly.

Checking

NOTE: Perform the following test before operating your product.

This product is equipped with an automatic oiling system! The oiling system automatically delivers the proper amount of oil to the bar and chain! Checking the lubrication requires starting the engine. Before checking, the product must be fully assembled and all instructions must have been read.

1. Make sure the guide bar (7) and the saw chain (6) are in place when you check the oil delivery.

2. Start the engine; keep it running at medium power and check if the chain oil is delivered as shown in the figure (Fig. 15). 3. Adjust the chain oil flow turning the on the adjustment screw (25) of the oiler on the bottom of the product using the screwdriver (32) (Fig.16).

Fuel

WARNING! This product is not supplied with fuel-oil mixture in the engine! Before operating this product it is essential to fill it with fuel-oil mixture!

This product is equipped with a 2-stroke engine, the fuel and oil tank are combined and it is essential to fill a fuel-oil mixture before operating this product.  Observe the technical specifications for suitable fuel and engine oil.

WARNING! Fuel and oil are highly inflammable! Fumes will explode if lit! Ensure that there are no naked flames around the product! Do not smoke while filling fuel and oil!

1. Place the product on a stable, level surface with the fuel tank cap (27) facing upward. We recommend laying a non-flammable sheet under the product.

2. Mix a regular-grade unleaded gasoline 95 and a quality engine oil for air cooled 2 stroke engines in a suitable container (Fig. 17).

NOTE: Use an anti-oxidant added quality oil expressly labelled for air- cooled 2 stroke engine use (JASO FC GRADE OIL or ISO EGC GRADE). Do not use BIA  or TWC (2 stroke water-cooling type) mixed oil. Add 30ml of oil for each litre of unleaded 95 octane gasoline.

NOTE: Never mix fuel and oil directly in the tank of the product.

3. Unscrew and remove the fuel tank cap (27).

4. Fill correctly mixed fuel/oil into the tank using a fuel funnel fitted with a filter to avoid debris entering the tank. Do not overfill and leave approximately 5  mm of space between the top of the fuel and the inside edge of the tank to allow for expansion (Fig. 18).

5. Avoid spilling and overfilling the tanks.

NOTE: Fuel and oil deteriorate over time. It may be difficult to start the engine if you use fuel which has been kept for more than 30 days.  Towards the end of the season, it is advisable to put only as much fuel in the tank as

you need for each use, since it should be completely used up before storing the product. Empty remaining fuel from the tank when storing the product for over 30 days

6. Wipe up spilled lubricant with a soft cloth and refit the fuel tank cap (27). Use the multitool (31) to tighten the cap (27) properly (Fig. 19). NOTE: Always dispose of fuel, used oil and objects contaminated with them in accordance with local regulations.

Intended Use

The product is intended for cutting logs and limbs.

The product may only be used with the guide bar/saw chain combination stated within these instructions. The use of other types or sizes is not allowed. This product is intended for private domestic use only, not for any commercial trade use. It must not be used for any purposes other than those described.

Primer

Press the primer (28) when starting the product with a cold engine. Do not press the primer for the warm start.

Recoil starter handle

The recoil starter handle (24) is positioned at the side of the engine.

WARNING! Never twist the starter cord around your hand! Only pull on the handle!

WARNING! Do not suddenly release the recoil starter handle! Allow the rope to return slowly and in a controlled manner each time it is pulled! Do not pull  out the recoil starter beyond the red colour band at the end of the recoil starter!

Chain brake

The chain brake is a safety mechanism activated by the front hand guard (5). When kickback occurs, the saw chain stops immediately.  The chain brake in the disengaged position, the product can be operated (Fig. 20).

The chain brake in the engaged position, the saw chain is stopped as soon as the chain brake is activated (Fig. 21).

Chain brake test – manual chain brake

The following function check should be carried out before each use. The purpose of the chain brake testing is to reduce the possibility of injury due to kick back.

1. Start the product as described below.

2. Press the throttle interlock (2), then fully press the throttle trigger (3) with your index finger and hold in this position.

3. While the engine is running, activate the chain brake by rolling your left hand forward against the front hand guard (5). Saw chain (6) and engine should stop immediately.

WARNING! If the saw chain and engine fail to stop when the chain brake is engaged, take the product to the nearest authorized dealer or service centre! Do  not use the product if the chain brake is not in working properly!

WARNING! The front hand guard should not be used for starting and stopping the product during normal operation!

Chain brake test – non-manual chain brake

WARNING! When checking the operation of the non-manual chain brake, use a soft surface substance like wood to provide the impact so the saw chain is not damaged!

The non-manual chain brake stops the operation of the saw chain in such a manner that the kickback action produced at the end of the guide bar non-manu ally actuates the chain brake.

To make sure that the non-manual chain brake operates properly, proceed as follows:

1. Stop the engine of the product.

2. Operate the front and rear handles with hands (grip them lightly), so that the guide bar may be placed at the height of about 55 cm (Fig. 22).

3. Softly detach the left hand from the front handle, and touch the end of the guide bar against the wood or the like placed below so that the product re ceives an impact (at this time the rear handle should be gripped lightly with right hand).

4. The impact is transferred to the brake lever, which actuates the chain brake.

Chain speed

NOTE: Perform the following test before operating your product.

Start the product as described below and keep it in idle speed. The saw chain (6) must not move when the engine is running idle.  WARNING! If the saw chain shows any signs of moving, stop the engine immediately! Wait for all moving parts to stop! Contact a qualified specialist to re-ad just idling speed!

General operation

1. Check the product, as well as accessories for damage before each use. Do not use the product if it is damaged or shows wear.

2. Double check that accessories and the guide bar/saw chain are properly fixed.

3. Check the fuel and chain oil level, refill if necessary.

4. Always hold the product by its handles. Keep the handles dry and free from lubrication to ensure safe support.

5. Ensure that the air vents are always unobstructed and clear. Clean them if necessary with a soft brush. Blocked air vents may lead to overheating and damage the product.

6. Switch the product off immediately if you

are disturbed while working by other people entering the working area. Always let the product come to complete stop before putting it down.

7. Do not overwork yourself. Take regular breaks to ensure you can concentrate on the work and have full control over the product.

Cold start

1. Make sure the chain brake is engaged (see above).

2. Ensure the saw chain (6) does not come into contact with anything before starting the engine.

3. Set the ignition switch (4) to its “I” position (on position) (Fig. 23).

4. Press the primer (28) until the bubble is completely filled with fuel (5-8 times). Pull the choke knob (19) to the start position (closed position) (Fig.24).

5. Hold the product securely to the ground. Place your left hand on the front handle (29) and hold the rear end of rear handle with your right knee. Then pull  the starter handle (24) vigorously 3 to 4 times. Do not start the engine while handling the product with one hand (Fig. 25).  WARNING! Allow the rope to return slowly and in a controlled manner each time it is pulled! Do not pull out the recoil starter beyond the red colour band at  the end of the recoil starter!

6. When you hear several strokes (the engine has ignited), squeeze the throttle interlock and throttle lever. Pull the starter handle again until the engine  starts.

NOTE: When you squeeze the throttle interlock (2) and throttle trigger (4 ) the choke knob (19) will return to the operating position.

7. Disengage the chain brake.

8. Squeeze the throttle interlock and throttle trigger. The saw chain runs.

9. Let the product run in idle for 10 to 15 seconds to let it warm up.

10. Push the front hand guard (5) to check if the chain brake works properly. Then disengage the chain brake.

11. Grip the product with both hands, left hand holding the front handle (29) (do not hold the front hand guard) and the right hand holding the rear handle (1).

Warm start

1. Make sure the chain brake is engaged (see above).

2. Ensure the saw chain (6) does not come into contact with anything before starting the engine.

3. Set the ignition switch (4) to its “I” position (on position) (Fig. 26).

4. Leave the choke knob (19) in its opened position and do not prime (Fig. 27).

5. Hold the product securely to the ground. Place your left hand on the front handle (29) and hold the rear end of rear handle with your right knee. Then pull  the starter handle (24) vigorously 3 to 4 times. Do not start the engine while handling the product with one hand (Fig. 28).  WARNING! Allow the rope to return slowly and in a controlled manner each time it is pulled! Do not pull out the recoil starter beyond the red colour band at  the end of the recoil starter!

6. When you hear several strokes (the engine has ignited), squeeze the throttle interlock and throttle lever. Pull the starter handle again until the engine  starts.

NOTE: When you squeeze the throttle interlock (2) and throttle trigger (3) the choke knob (19) will return to the operating position.

7. Disengage the chain brake.

8. Squeeze the throttle interlock and throttle trigger. The saw chain runs.

9. Let the product run in idle for 10 to 15 seconds to let it warm up.

10. Push the front hand guard (5) to check if the chain brake works properly. Then disengage the chain brake.

11. Grip the product with both hands, left hand holding the front handle (29) (do not hold the front hand guard) and the right hand holding the rear handle (1).

Stopping the chainsaw

1. Release the throttle trigger (3) and let the product run in idle for a while.

2. Set the ignition switch (4) to its lower position “O” (off position) (Fig. 29).

WARNING! The product will continue to work for some time even after the engine has been switched off! Wait until it comes to a complete stop before you  put the product down!

Basic operating/cutting procedure

1. To become proficient attend a recognized chain saw training course to learn how to operate chain saws safely and effectively. Familiarize yourself with all  the controls and switches. Practice all movements with the product switched off.

2. Always hold the product firmly with both hands. Front handle (29) with the left hand and rear handle (1) with the right hand. Fully grip both handles at all  times during operation. Never operate the product using only one hand.

3. Only use the product with a secure stance. Hold the product at the right- hand side of your body (Fig. 30).

4. Check the proper lubrication as described in section “Before you start – Chain lubrication” before performing any cut.

5. Ensure the saw chain (6) is running at full speed before it makes contact with the wood. Use the spiked bumper to secure the product onto the wood before starting to cut and use it as a leverage point while cutting (Fig. 31).

6. Reset the spiked bumper at a low point when cutting thicker logs by pulling the product slightly backwards until the gripping teeth release, and reposition  at lower level to continue sawing. Do not remove the product completely from the wood.

7. Do not force the saw chain while cutting, let the chain do the work, using the gripping teeth to apply minimal leverage pressure.

8. Do not operate the product with arms fully extended or attempt to saw areas which are

difficult to reach, or on a ladder. Never use the product above shoulder height (Fig. 32).

9. Optimum sawing is achieved if the chain speed remains constant during cutting.

10. Be careful when reaching the end of the cut. The weight of the product may change unexpectedly as it cuts free from the wood. This can cause accidents to the legs and feet. Always remove the  product from a wood cut while the product is running.

11. Check that the oil feed to the chain is operating correctly; run the chain saw at medium speed and ensure that the chain has received a consistent coating  of oil.

Kickback

WARNING! Beware of kickback! Kickback can lead to dangerous loss of control of the product and result in serious or fatal injury to the operator or anyone  standing close by! Always be alert because rotational kickback and pinch kickback are major product operational dangers and the leading cause of most  accidents!!

Kickback may occur if the nose or tip of the guide bar touches an object, or if wood pinches the saw chain in the cut.

In some cases, contact with the tip of the guide bar (7) may cause a lightning-fast reverse reaction, kicking the guide bar up and back toward the operator  (Figs. 33 – 35).

1. Pinching the saw chain (6) along the bottom of the guide bar (7) may pull the product forward away from the operator (“skating”) (Fig. 36).

2. Pinching the saw chain (6) along the top of the guide bar (7) may push the guide bar rapidly back toward the operator (“bouncing”) (Fig. 37).

3. Any of these reactions may cause losing control of the product, which could result in serious personal injury or even death.

4. With a basic understanding of ‘kickback’, the element of surprise can be reduced or eliminated. Sudden surprise contributes to the majority of accidents.

5. Keep a good firm grip on the product with both hands, the right hand on the rear handle (1) and the left hand on the front handle (29), when the engine  is running. Maintain a firm grip with your thumbs and fingers encircling the handles. A firm grip will help you reduce ‘kickback’ and maintain control of the  product.

6. You should carefully read all safety warnings and user instructions before attempting to operate this product.

To avoid kickback:

  • Saw with guide bar at a flat angle.
  • Never work with a loose, widely stretched or the heavily worn out chain.
  • Ensure chain is sharpened correctly.
  • Never saw above shoulder height.
  • Never work with the tip of the guide bar.
  • Always hold the product firmly with both hands.
  • Always use a low kickback chain.
  • Apply the metal gripping teeth for leverage.
  • Ensure correct chain tension.
  • Do only cut with the engine at high speeds.
  • Do not let the nose of the guide bar contact a log, branch, or any other obstruction which could be hit while you are operating the product.
  • Follow manufacturer’s sharpening and maintenance instructions for the saw chain.
  • Only use replacement guide bars and saw chains specified by the manufacturer or equivalent replacements.

WARNING! Most ‘kickback’ accidents happen during limbing! Pay close attention to the position of the ‘kickback’ zone of the bar when you are ‘limbing’  branches that are under tension.

After use

  1. Switch the product off and let it cool down.
  2. Check, clean and store the product as described below.

Care and maintenance

WARNING! Always switch the product ff, disconnect the spark plug connector and let the product cool down before performing inspection, maintenance and  cleaning work!

1. Keep the product clean. Remove debris from it after each use and before storage.

2. Regular and proper cleaning will help ensure safe use and prolong the life of the product.

3. Inspect the product before each use for worn and damaged parts. Do not operate it if you find broken and worn parts.  WARNING! Only perform repairs and maintenance work according to these instructions! All further works must be performed by a qualified specialist!

General cleaning

1. Clean the product with a slightly damp cloth and mild soap. Use a brush for areas that are hard to reach.

2. In particular clean the air vents (18) after every use with a cloth and brush.

3. Remove stubborn dirt with high pressure air (max. 3 bar).

NOTE: Do not use chemical, alkaline, abrasive or other aggressive detergents or disinfectants to clean this product as they might be harmful to its surfaces.

4. Check for worn or damaged parts. Replace worn parts as necessary or contact an authorized service centre for repair before using the product again.

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Maintenance Table


Part

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Action

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Before/after each use

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10 Hours

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25Hours

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50 Hours/half year

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100 Hours/once a year

Cylinder fins

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Clean

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Air filter

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Clean

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Spark plug

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Check

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Spark plug

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Clean

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Spark plug

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Replace

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Whenever necessary

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Air filter

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Check

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Air filter

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Clean

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Air filter

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Replace

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Whenever necessary

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Fuel filter

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Check

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Fuel filter

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Clean

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Fuel filter

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Replace

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Whenever necessary

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Saw chain

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Check

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Saw chain

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Lubricate

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Saw chain

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Clean

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Saw chain

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Replace

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Whenever necessary

Spare parts

The following parts of this product may be replaced by the consumer. Spare parts are available at an authorized dealer or through our customer service.

Spark plug: RCJ7Y/Champion, BM6A/Torch

Bar – chain type: 25cm – 3/8”, 1,3mm

Chain catcher

Replace a damaged or worn chain catcher with a new one of the same type.

1. Loosen the screw (Fig. 52, A) and remove it together with the chain catcher (13).

2. Fix a new chain catcher to the product.

Sprocket wheel

NOTE: It is not necessary to remove the saw chain (6) to lubricate the sprocket. Lubrication can be done on the job.

1. Clean the sprocket wheel (8).

2. Using a disposable lube gun, insert the needle nose into the lubrication hole (Fig. 53, A) and inject grease until it appears at the outside edge of the sprock et (Fig. 53).

3. Make sure that the chain brake is disengaged.

Rotate the saw chain (6) by hand. Repeat the lubrication procedure until the entire sprocket has been greased.

Guide bar and saw chain maintenance

Most guide bar problems can be prevented merely by keeping the product well maintained. Incorrect filing and non-standard cutter and depth gauge settings are the causes of most guide bar problems, primarily resulting in uneven bar wear. As the bar wears unevenly, the rails widen, which may cause the chain to clatter and make it difficult to complete straight cuts.

If the guide bar is insufficiently lubricated and the product is operated with a saw chain which is too tight, this will contribute to rapid bar wear. To help mini mise bar wear, maintenance of the guide bar as well as the saw chain is recommended.

1. Disassemble the guide bar and saw chain in reversed order from assembly.

2. Check the oiling port (12) for clogging and clean if necessary to ensure proper lubrication of the guide bar and saw chain during operation. Use a soft wire  small enough to insert into the oil discharge hole (Fig. 54).

NOTE: The condition of the oil passages can be easily checked. If the passages are clear, the chain will automatically give off a spray of oil within seconds of  the product starting. Your product is equipped with an automatic oiling system.

3. Check the drive sprocket. If it is worn or damaged due to strain, have it replaced by an authorised service agent.

4. Clear residue from the rails on the guide bar (7) using a screwdriver, putty knife, wire brush or other similar tool. This will keep the oil passages open to  provide proper lubrication to the bar (7) and saw chain (6) (Fig. 55).

5. Check the guide bar ‘rail’ for wear: Hold a ruler (straight edge) against the side of the guide bar and ‘cutter side plates’. If there is a gap between the  ruler and guide bar the guide bar ‘rail’ is normal. If there is no gap (ruler flush against the side of the guide bar) the guide bar ‘rail’ is worn and needs to be  replaced with a new one of the same type (Fig. 56).

6. Turn the guide bar 180° to allow even wear, thereby extending the life span of the guide bar (7).

7. Check the saw chain for possible wear and damages. Replace it with a new one if required. Experienced user can sharpen a dull saw chain (see section “Saw chain sharpening” below).

8. Refit the saw chain (6) and the guide bar (7) as described under “Assembly”.

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Air filter

Inspect the air filter (21) regularly. Clean or replace it with a new one if necessary.

1. Loosen the fixation screw (20a) and remove the air filter cover (20) (Fig. 60).

2. Remove the air filter (21) (Fig. 60).

3. Tap the filter (21) on a stable surface to remove dust. Use compressed air (max. 3 bar) to remove stubborn dust.

4. Refit the filter, attach the fixation cover and air filter cover (20) and secure it with the fixation screw (20a).

Spark plug

Inspect the spark plug every 25 hours or prior to long-term storage over 30 days if the use has not been this high. Clean or replace with a new spark plug if  necessary.

1. Remove the air filter cover (20) as described. Disconnect the spark plug connector (23) (Fig. 61).

2. Use the multitool (31) to loosen and remove the spark plug (Fig. 62).

3. Check the spark plug for damage and wear. The colour of the electrode should be light-brown coloured.

4. Remove debris from the electrode with a

soft wired brush; avoid heavy cleaning of the electrode.

5. Dry the spark plug with a soft cloth if it is wet from fuel.

6. Check the spark plug gap. It should be 0.6 – 0.7 mm (Fig. 63).

7. Replace with a new spark plug if either the electrode or the insulation is damaged.

8. When replacing the spark plug, first screw it in hand tight and then lightly tighten it with the multitool (31).

WARNING! Do not over-tighten the spark plug to avoid any damage!

9. Attach the air filter cover (20) and secure it with the fixation screw (20a).

Fuel tank

1. Empty the fuel tank when storing the product over 30 days to prevent the fuel deteriorating.

2. Unscrew and remove the fuel tank cap (27) and use a proper fuel pump to empty the fuel into a suitable container.

Fuel filter

The fuel tank of this product is fitted with a filter located at the free end of the fuel pipe. If it be necessary to clean or replace the fuel filter, please contact an authorized service centre or a similarly qualified person.

Carburetor

The carburetor is pre-set by the manufacturer. Should it be necessary to make any changes please contact an authorized service centre or a similarly qualified person. Do not attempt to make any adjustments by yourself.

Silencer

If it be necessary to modify or replace the silencer, please contact an authorized service centre or a similarly qualified person.

Repair

This product does not contain any parts that can be repaired by the consumer. Contact an authorized service centre or a similarly qualified person to have it  checked and repaired.

Storage

1. Clean the product as described above.

2. Attach transportation guards, if applicable.

3. Store the product and its accessories in a dry, frost-free, well- ventilated place.

4. Always store the product in a place that

is inaccessible to children. The ideal storage temperature is between 10 and 30°C.

5. Store the product in its bag or cover it with a suitable cloth to protect it against dust.

6. Empty the tank(s) if you are not going to use the product for an extended period of time (more than 3 months) and before storing it for the winter.

Transportation

1. Switch the product off and disconnect the spark plug connector before transporting it anywhere.

2. Attach transportation guards, if applicable.

3. Always carry the product by its handle. You can also use the bag for transportation.

4. Protect the product from any heavy impact or strong vibrations which may occur during transportation in vehicles.

5. Secure the product to prevent it from slipping or falling over, loss of fuel, damage and injury.

Troubleshooting

Suspected malfunctions are often due to causes that the users can fix themselves. Therefore check the product using this section. In most cases the problem  can be solved quickly.

WARNING! Only perform the steps described within these instructions! All further inspection, maintenance and repair work must be performed by an au thorised service centre or a similarly qualified specialist if you cannot solve the problem yourself!

15 WWW.NAKAYAMATOOLS.COM

EN

Problem

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Possible cause

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Solution

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1. Engine does not start

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1.1. Not enough fuel in fuel tank

1.2. Primer has been not pressed at cold start

1.3. Primer has been pressed at warm start

1.4. Spark plug is wet

1.5. Spark plug is damaged

1.6. Spark plug connector lose

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1.1. Add fuel

1.2. Press the primer and restart

1.3. Dry spark plug

1.4. Dry spark plug

1.5. Replace spark plug

1.6. Attach properly

2. Engine stops

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2.1. Not enough fuel in fuel tank

2.2. Cutting device is blocked

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2.1 Add fuel

2.2 Remove blockage

3. Unsatisfactory cutting

performance

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3.1 Saw chain not tensioned properly

3.2 Blunt saw chain

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3.1 Tension properly

3.2 Sharpen or replace the saw chain

4. Excessive vibration/noise or  exhaust

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4.1. Saw chain is dull/damaged

4.2. Bolts/nuts are loosen

4.3. Petrol/oil is incorrect

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4.1 Replace with a new one

4.2. Tighten bolts/nuts

4.3. Empty out unused petrol/ oil and refill with  the correct petrol/oil

Recycling and Disposal

1. Waste products should not be disposed of with household waste. Please recycle where facilities exist. Check with your Local Authority or local store for  recycling advice.

2. Petrol, oil, used oil, mixtures of oil and petrol and objects contaminated with oil, e.g. cleaning cloths; do not belong with household waste. Dispose of oil-contaminated items in accordance with the local guidelines and hand them in at recycling centres.

3. The product comes in a packaging that protects it against transportation damage. Keep hold of the packaging until you are sure that all the parts have been  delivered and the product is functioning properly. Recycle the packaging afterwards.

16 WWW.NAKAYAMATOOLS.COM

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