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English

Your chainsaw has been engineered and manufactured 

to  ryobi’s  high  standard  for  dependability,  ease  of 

operation, and operator safety. When properly cared for, 

it will give you years of rugged, trouble-free performance.
Important! It is essential that you read the instructions in 

this manual before operating this machine.
thank you for buying a ryobi product.

SAVE THIS MANUAL FOR FUTURE REFERENCE

INSTRUCTION

this product has many features for making its use more 

pleasant and enjoyable. 

safety, performance, and dependability have been given 

top priority in the design of this product making it easy to 

maintain and operate.

DESCRIPTION OF FIGURES

Figure 1a – General overview of the chainsaw

1.  starter grip

2.  trigger release

3.  throttle trigger

4.  starter housing

5.  Chain lubricant cap

6.  rear handle

7.  engine cover

8.  Front handle

9.  Front hand guard/chain brake

10. Clutch cover

11.  Chain tensioning dial

12. Clutch cover lock knob

101.Bumper spike bar

Figure 1b – General overview of the chainsaw

13. primer bulb

14. Ignition switch

15. Choke lever

16. Fuel cap

Figure 2 – saw chain

17. Flats on drive links

Figure 7 – Chainsaw brake – brake position

18. Brake position

Figure 8 – Chainsaw brake – run position

19. run position

Figure 9 – Chainsaw starting position

1.  starter grip

Figure 10 – Ignition switch

14. Ignition switch in the run position

Figure 11

13. primer bulb

Figure 12

15. Choke lever

21. start position

22. run position

Figure 13

2. trigger release 

3. throttle trigger

Figure 14

14. Ignition switch in the stop position

Figure 15

25. Idle speed screw “t”

Figure 16

26. pull

27. push

Figure 17

23. Kickback danger zone

Figure 18

28. rotational kickback

Figure 19

29. proper hand grip position

30. Improper grip

31. proper grip

Figure 20

32. Chain line

Figure 21

32. Chain line

33. thumbs on underside of handle bar

34. straight arm

Figure 23

35. planned line of fall

36. 135 degree from planned line of fall

37. path of safe retreat

Figure 24

38. Hinge – 5 cm or 1/10 diameter

39. Back cut

40. notch approx. 1/3 diameter of the trunk

Figure 25

39. Back cut

41. Hinge

Summary of Contents for RCS4040B

Page 1: ...CHAINSAW Operator s manual Important It is essential that you read the instructions in this manual before assembling maintaining and operating this machine RCS4246B RCS4040B...

Page 2: ......

Page 3: ......

Page 4: ...over lock knob 101 Bumper spike bar Figure 1b General overview of the chainsaw 13 Primer bulb 14 Ignition switch 15 Choke lever 16 Fuel cap Figure 2 Saw chain 17 Flats on drive links Figure 7 Chainsaw...

Page 5: ...ters 59 Chain rotation Figure 40 60 Bar groove Figure 41 61 Adjusting pin 62 Chain tensioning pin hole 63 Sprocket 10 Clutch cover Figure 42 64 Rotate clutch cover knob clockwise to secure 12 Clutch c...

Page 6: ...n Flying material cut from the work piece n Inhalation of saw dust and particles or emissions from the petrol engine n Skin contact with petrol oil n Loss of hearing if no hearing protective equipmen...

Page 7: ...e appropriate guide bar scabbard n Shut off the engine before setting the chainsaw down Do not leave the engine running unattended As an additional safety precaution apply the chain brake prior to set...

Page 8: ...or has been modified particularly guards or safety devices or is not completely and securely assembled Be sure that the saw chain stops moving when the throttle control trigger is released If the saw...

Page 9: ...de Engines produce carbon monoxide which is an odorless deadly poison Do not operate in an enclosed area Kickback Danger Beware of kickback Bar Nose Contact Avoid bar nose contact Wear Gloves Wear non...

Page 10: ...power tool can result in foreign objects being thrown into your eyes which can result in severe eye damage Before beginning power tool operation always wear safety goggles safety glasses with side sh...

Page 11: ...ickback Chain A chain that complies with the kickback performance requirements of ISO 9518 when tested on a representative sample of chain saws Normal Cutting Position The positions assumed in perform...

Page 12: ...ith attachment 11 000 r min 11 000 r min Maximum engine speed with attachment reference only 12 500 r min 12 500 r min Idling engine speed 2 600 3 600 r min 2 600 3 600 r min Specific fuel consumption...

Page 13: ...Part number Color 18 10W N1 MHC UNB 308947001 Black 16 10W N156 MHC UNB 308946001 Black Chain Carlton part number Part number N1C BL 62E B 901213003 N1C BL 56E B 901213002 Guide bar no silkscreen Ore...

Page 14: ...rotective gloves when performing maintenance on the chain 1 Stop the engine before setting the chain tension 2 Slightly loosen the clutch cover lock knob by pressing in and rotating counterclockwise F...

Page 15: ...roduct and in this operator s manual as well as knowledge of the project you are attempting Before use of this product familiarise yourself with all operating features and safety rules Bumper Spike Th...

Page 16: ...duct differs depending on whether the engine is cold or warm WARNING Keep your body to the left of the chain line Never straddle the saw or chain or lean over the chain line petrol or lubricant comes...

Page 17: ...safety set the chain brake when the saw is not in use In the event that the ignition switch will not stop the saw pull the choke lever out to the fully extended position Full Choke and engage the chai...

Page 18: ...owing technique to get the feel of using the saw before you begin a major sawing operation 1 Take the proper stance in front of the wood with the saw idling 2 Accelerate the engine to full throttle ju...

Page 19: ...ar cutting area Make sure that no objects can contact the guide bar nose and chain during cutting this can cause Kickback Refer to Kickback in the Specific Safety Rules section of this manual for more...

Page 20: ...ll of the bearings in this product are lubricated with a sufficient amount of high grade lubricant for the life of the unit under normal operating conditions Therefore no further lubrication is requir...

Page 21: ...n If signs of wear or damage are present in the areas indicated have the drive sprocket replaced by an authorised service centre Note If you do not fully understand the correct procedure for sharpenin...

Page 22: ...ft the front of the engine cover past chain brake lever 4 Lift the back of the engine cover past the handle 5 Before removing the air filter from the carburettor blow or brush as much loose dirt and s...

Page 23: ...placement and replace every 50 hours or more frequently if necessary 1 Remove the spark plug lead by carefully rotating back and forth whilst gently pulling upwards 2 Loosen the spark plug by turning...

Page 24: ...bulb several times to purge fuel from carburettor 4 Drain all bar and chain lubricant from tank into a container approved for lubricant Always place the scabbard over the guide bar and chain before tr...

Page 25: ...ine starts but will not run Carburettor requires H Contact an authorised service centre for properly at high speed High jet adjustment carburettor adjustment Engine does not reach full speed Lubricant...

Page 26: ...or bar may be damaged If no lubricant is present contact an authorised service centre Engine starts and runs but Chain brake is engaged Release chain brake Refer to Operating the chain is not rotatin...

Page 27: ...the dealer has no authority from the Company s behalf except as herein contained or herein referred to Guarantee Conditions This guarantee only applies provided that the product has been used in acco...

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