Cobra CS420 Owner's Manual
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Cobra CS420 Owner's Manual

Petrol chainsaw
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C03�A
MODELS: CS420/CS520/CS620
COBRA PETROL CHAINSAW
OWNER'S MANUAL
REV: SEPT 2016
& Caution
Before using our chain saws. please read this
manual carefully to understand the proper use of
your unit. keep this manual handy.

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  • Page 1 C03�A MODELS: CS420/CS520/CS620 COBRA PETROL CHAINSAW OWNER'S MANUAL REV: SEPT 2016 & Caution Before using our chain saws. please read this manual carefully to understand the proper use of your unit. keep this manual handy.

  • Page 2: Table Of Contents

    SAFETY FIRST Instructions contained in warnings within this manual marked with a.&. symbol concern critical points which must be taken into consideration to prevent possible serious bodily injury, and for this reason you are requested to read all such instructions carefully and follow them without fail. •...

  • Page 3: Parts Location

    1. COMPONENT LOCATION 1. Front guard/Brake 2. Starter knob 3. Air cleaner 4. Choke knob 5. Throttle interlock 6. Rear handle 7. Throttle trigger 8. Engine switch 9. Fuel tank Oil tank Front handle 12. Saw chain 13. Guide Bar 2.

  • Page 4: Symbols On The Machine

    WARNING Never remodel the product. We won't warrant the machine, if you use the remodeled product or you don't observe the proper usage written in the manual. 3. SYMBOLS ON THE MACHINE For safe operation and maintenance, symbols are carved in relief on the machine. According to these indications, please be careful not to make a mistake.
  • Page 5 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...
  • Page 6 3.Objects to notify your working area (Rope, warning signs) 4.Whistle (for collaboration or emergency) � 5.Hatchet or saw (for removal of obstacles) 6.First aid kit c. Always wear appropriate full length trousers, ideally with protective properties (to EN 381-5). Appropriate footwear to protect against injury . •...
  • Page 7 Before starting the engine, make sure the saw chain is not contacting • • anything. • OPERATION • • Keep the handles dry, clean and free of oil or fuel mixture. Avoid working alone with a chainsaw. Never touch the muffler, spark plug or other metallic parts of the engine •...

  • Page 8: Installing Guide Bar And Saw Chain

    Do not overreach or cut above shoulder height. Follow manufactures sharpening and maintenance instructions for saw chain. Only use replacement bars 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.
  • Page 9 !AWARNING! The saw chain has very sharp edges. Use thick protective gloves for safety. 1. Pull the guard towards the front handle to check that the chain brake is not on. 2. Loosen the nuts and remove the chain cover. 3.

  • Page 10: Fuel And Chain Oil

    !NOT§ A new chain will expand its length at the beginning of use. Check and readjust the tension frequently as a loose chain can easily derail or cause rapid wear to itself and the guide bar. 6. FUEL AND CHAIN OIL •...

  • Page 11: Operating The Engine

    7. OPERATING THE ENGINE • STARTING ENGINE PROCEDURE 1. Fill fuel and chain oil tanks respectively, and tighten the caps securely.(F7) 2. Put the switch to -1· position.(F8) 3. While holding the throttle lever together with the throttle inter1ock, push in the side throttle lock button and release the throttle lever to hold it at the starting position.(F9) Chain oil...
  • Page 12 in the figure.(F12) (1)Chain oil The chain oil flow can be changed by inserting a screwdriver in the hole on bottom of the clutch side. Adjust according to your work conditions. (F13) - Switch off the engine whilst adjusting. (1) Adjuster !NOTEt The oil tank should become nearly empty by the time fuel is used up.
  • Page 13 5. Make a test cut and adjust the H needle for best cutting power, not for maximum speed. L needle H needle Idle adjusting screw • CARBURETOR ANTI-FREEZE MECHANISM OPTION WHERE FITTED ° Operating the chain saw in temperatures of 0-5 at times of high humidity may result in ice forming within the carburetor, and this in turn may cause the output power of the engine to be reduced or...
  • Page 14 A.WARNING! Continuing to use the product in anti-freeze mode even when temperatures have risen and returned to normal may result in the engine failing to start properly or in the engine failing to operate at its normal speed, and for this reason you should always be sure to return the unit to normal operating mode if there is no danger of icing occurring.

  • Page 15: Sawing

    for a few minutes. 2.Put the switch to the "O" (STOP) position. (F18) (1) Switch 8.SAWING A.WARNING! • Before starting your work, read the: "For Safe Operation" section. It is recommended to first practice sawing easy logs. This also helps you get accustomed to your unit.
  • Page 16 It is extremely important that the chain brake be • checked for proper operation before each use and that the chain be sharp in order to maintain the kickback safety level of this saw. Removal of the safety devices. Inadequate maintenance, or incorrect replacement of the bar or chain may increase the risk or serious personal injury due to...

  • Page 17: Maintenance

    the guide bar from being caught in the cut. A Log lying on the ground {F21) Saw down halfway, then roll the log over and cut from the opposite side. A Log hanging off the ground {F22) In area A, saw up from the bottom one-third and finish by sawing down from the top.
  • Page 18 oiling pot for clogging.(F26) 3. Guide bar When the guide bar is dismounted, remove Saw dust in the bar groove and the oiling port.(F27) Grease the nose sprocket from the feeding port on the tip of the bar.(F28) Oiling port Grease port Sprocket 4.

  • Page 19: Maintenance Of Saw Chain And Guide Bar

    Needle bearing Clutch drum Spacer Clutch shoe 4. Fuel filter Disassemble the filter and wash with gasoline, or replace with new one if needed. 5. Oil filter Disassemble the filter and wash with gasoline, or replace with new one if needed. 6.
  • Page 20 Place your file on the cutter and push straight forward. Keep the file position as illustrated. (F32) After every cutter has been set, check the depth gauge and file it to the proper level as illustrated. (F33) A.WARNING! Be sure to round off the front edge to reduce the chance of kickback or tie-strap breakage.

  • Page 21: Specifications

    550ml / 550ml / 550ml 300ml / 300ml / 300ml 3000rpm 7T 3/8 / 7T 0.325 / 7T 0.325 3/8(in) / 0.325(in) / 0.325(in) 0.050(in) / 0.058(in) / 0.050(in)
  • Page 22 Damage or defects resulting from abuse, accidents or alterations, natural fadi ng of painted or plated surfaces, sheet peeling and other natural deterioration. Any damage that occurs from the use of non-genuine Cobra parts will not be covered. We reserve the right to reject any claim where the purchase can not be verified or when it is clear that the product was not maintained properly.

This manual is also suitable for:

Cs520Cs620

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