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16

Correct use of chain brake

Chain brake

The chain brake's function is to stop chain rotation after a kickback.
It neither prevents nor reduces kickback.
Do not depend on the chain brake for protection against kickback.
Even with a chain brake, depend on your own good sense and proper cutting methods just as
though there were no chain brake.
Even with normal use and proper maintenance, the response time of the brake may lengthen.
The following may interfere with the brake's ability to protect the operator:

Saw wrongly held too close to operator's body.
Kickback time may be too fast even for a perfectly maintained brake to work in time.

The operator's hand may not be in position to contact the hand guard.
Brake will not be tripped.

Lack of proper maintenance lengthens the brake's stopping time, making it less effective.

Dirt, grease, oil, pitch, etc. getting into the working parts of the mechanism may lengthen 
the stopping time.

Wear and fatigue of the activating brake spring, and wear of the brake / clutch drum and 
pivot points may lengthen the brake's stopping time.

A damaged hand guard and lever may render the brake inoperative.

 DANGER

Kickback motion is very hazardous. 
If the tip of the bar touches wood or the like, the guide bar kicks back in an instant.
The chain brake reduces the possibility of injury due to kickback.
Always check that chain brake works properly before use.

NOTE

For practice, while cutting a small tree, push the front guard forward to engage the 
brake.

At all times, confirm whether the brake works properly before each task.

If the chain brake is clogged with wood chips, function of the brake deteriorates a little.
Always keep the device clean.

Do not increase engine revolutions while the chain brake is engaged.

Chain brake is used in emergencies.
Do not use it unless absolutely necessary.

When using throttle latch at starting, keep the chain brake in position.
And after starting the engine, release the brake immediately.

Never test the brake in an area where petrol fumes are present.

Summary of Contents for CS-680S

Page 1: ...OR S MANUAL CHAIN SAW CS 680S X750 316 610 2 2012 Printed in Japan 1601r 0777 ES ENGLISH WARNING Read the instructions carefully and follow the rules for safe operation Failure to do so could result i...

Page 2: ...this operator s manual has become illegible through impairment or is lost please purchase a new one from your ECHO dealer When renting or lending this machine to a person who will operate it always i...

Page 3: ...tting test 15 Correct use of chain brake 16 Chain brake 16 Checking the brake function of the brake 17 Release the chain brake 17 Non manual chain brake 17 Cutting instruction 18 General 18 Felling a...

Page 4: ...d message provide tips for use care and maintenance of the unit Symbol form shape Symbol description application Symbol form shape Symbol description application Carefully read the operator s manual C...

Page 5: ...rneath it ECHO advises wearing hearing protection at all times If not followed hearing loss can occur You should reduce the risk of hearing damage by wearing either headset type protectors or ear plug...

Page 6: ...starting or cutting with the chain saw Keep bystanders and animals out of the work area Do not let anyone hold wood for you to cut Do not start cutting until you have a clear work area secure footing...

Page 7: ...hain saw skating or skidding which can result in personal injury due to loss of control Keep a good firm grip on the saw which both hands with the right hand on the rear handle and the left hand on th...

Page 8: ...s of chain saw operation Try to fill a part of each work day with jobs other than chain sawing If you experience discomfort redness and swelling of the fingers followed by whitening and loss of feelin...

Page 9: ...not work from off the ground positions Stop the engine before setting the chain saw down Wood practices Operating a chain saw safely requires a chain saw in proper working order sound judgement and k...

Page 10: ...ing tool 11 Spiked bumper Device fitted in front of the guide bar mounting point acting as a pivot when in contact with a tree or log 12 Oil tank cap For closing the oil tank 13 Starter handle The gri...

Page 11: ...utch cover over the guide bar studs Tighten two nuts finger tight Ensure that chain tension adjuster fits into bar hole Hold the bar nose up and turn the adjuster clockwise until the chain fits snugly...

Page 12: ...gine fuel tank Avoid spilling petrol or oil Spilled fuel should always be wiped up Handle petrol with care it is highly inflammable Always store fuel in approved container Chain lubricant Proper lubri...

Page 13: ...Pull starter handle again WARNING After choke control knob is pulled and then knob is returned to original position throttle remains a little open latch condition If engine is started in this latch co...

Page 14: ...tle open latch condition Running 1 Chain brake RELEASED position 2 Throttle trigger lockout 3 Throttle trigger 4 Manual oiler button After engine starts allow it to idle for a few minutes Pull front h...

Page 15: ...iarize yourself with your chain saw before you start actual cutting For this purpose it may be wise to practice by cutting some small logs or limbs several times Do not allow either people or animals...

Page 16: ...ngthen the stopping time Wear and fatigue of the activating brake spring and wear of the brake clutch drum and pivot points may lengthen the brake s stopping time A damaged hand guard and lever may re...

Page 17: ...l 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 manually actuates the chain brake To make sure that the non manual...

Page 18: ...he saw too hard will slow the engine and cutting will actually be more difficult Some material may adversely affect the housing of your chain saw Example palm tree acid fertilizer etc To avoid housing...

Page 19: ...d bumper 2 5 cm to 5 cm above the bottom of the notch and stop cutting at approximately 1 10 of diameter to the inner edge of the notch in order to leave the uncut portion of the wood as a hinge 1 Not...

Page 20: ...good enough control to prevent possible injury Know how limb is stressed 1 Leave supporting limbs till last 2 Slide support logs under trunk Bucking Bucking is the sawing of a log or fallen tree into...

Page 21: ...The second cut is made downwards and should meet the first cut Overbuck 6 Down 7 Unsupported end Underbuck 8 Up 9 Wedge Make angled cut when one section may settle against the other WARNING Never use...

Page 22: ...ct Clean Adjust Replace 26 Cooling system Inspect Clean 27 Guide bar Inspect Clean 27 Sprocket Inspect Replace 27 Carburettor Adjust Replace and adjust 27 Silencer Inspect Tighten Clean Chain brake In...

Page 23: ...incorrect Covered with carbon Fouled with fuel Spark plug defective Adjust 0 6 to 0 7 mm Clean or replace Clean or replace Replace plug Engine does not crank Internal engine problem Ask your ECHO dea...

Page 24: ...s then inspect the cutters for damage When sharpening the chain the objective will be to maintain the same angles and profiles throughout its life as when it was new Inspect the chain for damage or we...

Page 25: ...ke all the other cutters back to the same length 7 The depth control determines the thickness of wood chip produced and must be maintained correctly throughout the chain life 8 As the cutter length is...

Page 26: ...ogged filter will cause difficulty in starting engine or abnormalities in engine performance Pick up the fuel filter through fuel inlet port with a piece of steel wire or the like When the filter is d...

Page 27: ...es L and H clockwise until lightly seated and return as indicated below Low speed mixture adjuster L 1 to 1 and 1 2 turns open High speed mixture adjuster H 5 8 turns open Turn idle speed adjuster T c...

Page 28: ...and pour 10 mL of fresh clean two stroke engine oil into the cylinder through the spark plug hole A Place a clean cloth over the spark plug hole B Pull the recoil starter handle 2 or 3 times to distri...

Page 29: ...showing their materials The codes refer to the following materials dispose of those plastic parts in accordance with local regulations Please contact your ECHO dealer in case you do not know how you s...

Page 30: ...ve links Type of guide bar Guide bar gauge Type of chain Lubrication mm mm cm mm 9 53 3 8 inch 1 47 0 058 inch 50 60 70 ECHO 1 47 0 058 inch Carlton A2LM Oregon 73LGX 73LPX Adjustable automatic oil pu...

Page 31: ...31 X750 316 610 2 2012 1Memorandum and back cover Memorandum...

Page 32: ...32 X750 316 610 2 2012 7 2 SUEHIROCHO 1 CHOME OHME TOKYO 198 8760 JAPAN PHONE 81 428 32 6118 FAX 81 428 32 6145 Printed in Japan 2015 11...

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