Echo CS-680 instruction manual Adjusting Chain Tension

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Proper tension Improper tension

Direction to tension the chain

Adjusting screw

7.Turn saw over and check brake band for correct position on clutch drum. If brake band is not in place around drum, remove cover, make sure brake is unlocked, and reinstall. Tighten clutch cover nuts finger tight.

WARNING

Improper clutch cover assembly can result in serious injury, and will cause severe saw damage if unit is started. Never start or operate saw if brake band is not in place on clutch drum. Always check chain brake operation after replacing cover. Do not use saw if chain brake does not function properly.

ADJUSTING CHAIN TENSION

IMPORTANT

Always loosen clutch cover nuts before turning the chain tension adjuster, otherwise the clutch cover and tensioner will be damaged.

1.Remove spark plug lead. (See page 25)

2.Unlock the chain brake and loosen two clutch cover nuts, if necessary.

3.Hold the bar nose up, and turn the adjuster screw clockwise until chain fits snugly against underside of the bar.

4.Tighten both nuts with the bar nose held up.

5.Pull the chain around the bar by hand. Loosen the adjustment if you feel tight spots.

6.When chain is properly tensioned, tighten clutch cover nuts securely - 20 to 23 N·m (175 to 200 in. lb.).

7.Keep chain properly tensioned at all times.

11

CS-680

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Contents X750-012 20 X750 316-510 ECHO, IncorporatedCopyright 2008 All Rights Reserved CS-680 Rules for Safe OperationOther Safety Precautions Symbols and Signs ContentsStop Symbol FormDecals Idle speedPacking List Warranty sheetEcho chain saw X505-002041 Part Number Nomenclature of PartsManual oil pump Device for proper lubrication of chain Chain tension adjuster Device to adjustOperator Safety Correct USE of Chain Brake Safety Requirement for chain sawsSpark Arrestor Muffler Ansi Standard B175.1Preparation for USE Guide BAR and SAW Chain INSTALLATION/REMOVALAdjusting Chain Tension Fuel Statement Fuel and LubricantGasoline Oil Gallons US. fl. oz 160 12.8 400 Handling Fuel Emission DataEmission Control Chain Lubricant OperationCap indication ChokeWhen the Engine is Warm When the Engine is ColdOpen firing sound, pull throttle trigger to release chokeStopping RunningChecking Chain Tension Chain Lubrication TestGeneral Cutting InstructionKickback Felling the Tree Bucking LimbingUphill position Finish cut First cut Board or flat stones Chain Brake Operation Testing the BrakeChain brake function Chain brake unlockWinter Operation Automatic Chain BrakeStop the engine Guide BAR Chain and Guide BAR CombinationSAW Chain Maintenance Intervals Maintenance and CareComponent / system Maintenance procedure Skill LevelsIdle adjusting screw High speed needle H Low speed needle L Carburetor AdjustmentCS-680 Cutting attachment must not move when unit is idling Turn screw out, CCW, an additional ¼ turnCheck Fuel System AIR FilterSpark Plug Fuel FilterCylinder Fins SprocketMuffler Spark Arrestor Automatic OilerSetting SAW Chain Setting the SAW ChainHold the file tipped 10 upward CS-680 Problem TroubleshootingCause Remedy Storage After USE Technical DataSs 3TOREOIN a DRY Area Freerfrom DUST Exceptions Warranty StatementsCS-680 C03203001001/C03203999999 Purchased Repair PARTS, Short Blocks and Accessories
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CS-680 specifications

The Echo CS-680 is a powerful and versatile chainsaw designed for both professional arborists and enthusiastic homeowners. Renowned for its reliability, performance, and ease of use, the CS-680 stands out in the competitive chainsaw market. It is particularly useful for those who need to tackle demanding cutting tasks while ensuring precision and control.

One of the main features of the CS-680 is its robust 67.9 cc engine, which provides an impressive power-to-weight ratio. This high-displacement engine delivers ample torque and speed, enabling users to easily cut through hardwoods and take on larger cutting projects. The chainsaw’s engine is equipped with a patented decompression valve that ensures easier starts, especially in cold weather. This feature significantly reduces the effort required to pull the starter rope, making it an excellent choice for users who may not have the strength of professional operators.

The Echo CS-680 comes with a 20-inch bar, allowing for deep cuts while maintaining maneuverability. Its precision-engineered chain ensures clean cuts and reduces kickback, enhancing safety during operation. The saw's automatic chain lubrication system keeps the chain properly lubricated during use, increasing its lifespan and performance. Additionally, the side-access chain tensioner allows for quick and easy adjustments without the need for additional tools, ensuring minimal downtime during projects.

Another notable characteristic of the CS-680 is its vibration-dampening technology. This system reduces the amount of vibration transmitted to the operator, leading to enhanced comfort during long periods of use. This is especially beneficial for professionals who rely heavily on their tools and need to mitigate fatigue.

The construction of the Echo CS-680 incorporates high-quality materials, providing rugged reliability. It features a heavy-duty air filter system that extends engine life by ensuring maximum air cleanliness. The chainsaw is also designed with a lightweight yet durable frame, making it easy to handle while still being tough enough to withstand the rigors of heavy use.

In summary, the Echo CS-680 chainsaw combines power, efficiency, and user-friendly features, making it an excellent choice for anyone looking to tackle serious cutting tasks with confidence. Its innovative technologies and engineering provide reliability and performance, ensuring it can handle the toughest jobs while remaining comfortable for the operator. Whether for professional or personal use, the Echo CS-680 is a dependable tool that meets the demands of its users.